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Articles 49621 - 49650 of 255945

Full-Text Articles in Life Sciences

The Microscopical Evidence Traces Analysis Of Household Dust And Its Statistical Significance As A Definitive Identification Technique, Stephanie Polifroni Sep 2022

The Microscopical Evidence Traces Analysis Of Household Dust And Its Statistical Significance As A Definitive Identification Technique, Stephanie Polifroni

Dissertations, Theses, and Capstone Projects

Evidence found at crime scenes is used to assist in creating a link the suspect, the victim, and the scene. As stated by the Locard’s Principle, every contact leaves a trace, that evidence can be used to link together an investigation. Traces are collected in hopes that they can be identified and associated to an individual or individuals to help solve that particular crime. However, the strongest conclusion for evidence traces is an association to a source, and unless a physical match of some kind is found, an individualization cannot be established even when known sample is available. However, having …


Generation Of Mycobacterium Smegmatis Model Systems For Testing Inhibitors Of The Mycobactin Siderophore Of Mycobacterium Tuberculosis, Gabrielle A. Germain Sep 2022

Generation Of Mycobacterium Smegmatis Model Systems For Testing Inhibitors Of The Mycobactin Siderophore Of Mycobacterium Tuberculosis, Gabrielle A. Germain

Dissertations, Theses, and Capstone Projects

Mycobacterium tuberculosis (Mtb) is the pathogenic bacterium causative of tuberculosis. According to the 2021 World Health Organization (WHO) Global Tuberculosis (TB) Report, there were approximately 5.8 million TB cases in 2020, and 1.3 million TB deaths among HIV negative people in that year. The rise of multi-drug resistant Mtb strains has increased the need for more potent microbials against this pathogen. Biosynthesis of iron scavenging molecules, known as siderophores (e.g., mycobactin and carboxymycobactin), has been identified as a potential drug target candidate since iron acquisition has been directly linked to the survival and virulence of Mtb. Salicyl-AMS (Sal-AMS) is …


Conformation Of The U12-U6atac Snrna Complex Of The Minor Spliceosome And Binding By Ntc-Related Protein Rbm22, Joanna Ciavarella Sep 2022

Conformation Of The U12-U6atac Snrna Complex Of The Minor Spliceosome And Binding By Ntc-Related Protein Rbm22, Joanna Ciavarella

Dissertations, Theses, and Capstone Projects

Splicing of precursor messenger (pre-m)RNA is a critical process in eukaryotes in which the non-coding regions, called introns, are removed and coding regions, or exons, are ligated to form a mature mRNA. This process is catalyzed by the spliceosome, a multi-mega Dalton ribonucleoprotein complex assembled from five small nuclear ribonucleoproteins (snRNP) in the form of small nuclear (sn)RNA-protein complexes (U1, U2, U4, U5 and U6) and >100 proteins. snRNA components catalyze the two transesterification reactions while proteins perform critical roles in assembly and rearrangement. U2 and U6 snRNAs are the only snRNAs directly implicated in catalyzing the splicing of pre-mRNA. …


Clustered Protocadherins Ubiquitination And Phosphorylation Regulates Surface Expression, Albert Ptashnik Sep 2022

Clustered Protocadherins Ubiquitination And Phosphorylation Regulates Surface Expression, Albert Ptashnik

Dissertations, Theses, and Capstone Projects

Clustered protocadherins (Pcdhs) are a family of 60 adhesion-like molecules forming a neural barcode. In vertebrate neurons, 60 Pcdhs are coded by a large gene cluster. Numerous axons in the cluster are coding for the different extracellular, transmembrane, variable portion of the cytoplasmic and constant cytoplasmic domains where their expression is controlled epigenetically. These proteins mediate interactions between axons, dendrites, and glial cells during neural development. Yet, Pcdhs are not strictly adhesion molecules. In the amacrine cells of the retina, Pcdhs promote avoidance of the same cell dendrites, where in the cortex Pcdhs promote interactions between dendrites and astrocytes. In …


The Behavioral And Gene Expression Effects Of Loss Or Exhaustion Of Sonic Hedgehog From Dopamine Neurons, Dustin R. Zuelke Sep 2022

The Behavioral And Gene Expression Effects Of Loss Or Exhaustion Of Sonic Hedgehog From Dopamine Neurons, Dustin R. Zuelke

Dissertations, Theses, and Capstone Projects

Mesencephalic dopamine neurons (DAN) signal motivation and reward prediction errors. Their collective functions are considered critical for the translation of thought into context appropriate actions. Dopaminergic dysfunction has severe consequences: (1) DAN degeneration is a major determinate of Parkinson’s Disease (PD), (2) disturbed dopaminergic signaling in schizophrenia leads to unorganized learning, and (3) chemically induced dopaminergic signaling results in impulse control disorders (ICDs) and life-threatening addictions. The use of the dopamine (DA) precursor L-Dopa for DA replacement therapy in PD patients produces motor and behavioral side-effects such as L-Dopa induced dyskinesias (LID), ICDs, and a propensity for opioid addiction. Despite …


Antisocial Behavior And Callous Unemotional Traits In Youth: A Biosocial Approach, Yong Lin Huang Sep 2022

Antisocial Behavior And Callous Unemotional Traits In Youth: A Biosocial Approach, Yong Lin Huang

Dissertations, Theses, and Capstone Projects

Early life presence of antisocial behavior (e.g., aggression/delinquency) and psychopathic/callous-unemotional (CU) traits (lacking empathy/remorse, shallow affect) are precursors to juvenile crime and criminal offending in adulthood. Etiological research on antisocial/CU tendencies has implicated both neurobiological (e.g., alterations in brain function and structure) and environmental (social adversity, prenatal stress) underpinnings. It has been proposed that reward and punishment processing deficits may induce problematic traits and behavior, such that antisocial/CU tendencies may be linked to hypersensitivity to rewards and hyposensitivity to punishment. Studies in this area have generated inconsistent findings and focused primarily on adult and clinical samples, leaving youth and community …


Function Of Atm And Msh2 During Dna Repair And Recombination, Emily Sible Sep 2022

Function Of Atm And Msh2 During Dna Repair And Recombination, Emily Sible

Dissertations, Theses, and Capstone Projects

Class switch recombination (CSR) produces secondary immunoglobulin isotypes and requires AID-dependent DNA deamination of intronic switch (S) regions within the immunoglobulin heavy chain (Igh) gene locus. Non-canonical repair of deaminated DNA by mismatch repair (MMR) or base excision repair (BER) creates DNA breaks that permit recombination between distal S regions. ATM-dependent phosphorylation of AID at serine-38 (pS38-AID) promotes its interaction with APE1, a BER protein, suggesting that ATM regulates CSR through BER. However, pS38-AID may also function in MMR during CSR, although the mechanism remains unknown. To examine whether ATM modulates BER- and/or MMR-dependent CSR, Atm-/- mice …


Natural Striatal Signaling Dynamics During Food Approach, Devry Mourra Sep 2022

Natural Striatal Signaling Dynamics During Food Approach, Devry Mourra

Dissertations, Theses, and Capstone Projects

Reduced dopamine (DA) signaling has been hypothesized to induce compulsive overeating in obesity. However, DA signaling facilitates food pursuit by acting on direct and indirect pathways. This disparity between why individuals compulsively overeat despite decreased DA and satiety signals is unclear. Characterizing how DA and direct/indirect pathways respond to satiation may elucidate how satiety signals become overwritten in obesity. The food's palatability may underlie this, which is putatively thought to override the satiety hormones since it directly increases DA signaling, resulting in the increased appetitive drive. We determined the pattern of dopamine and pathway-specific medium spiny neuron (MSN) activity across …


Mechanism Of Tau Propagation: Putative Therapeutic Approaches, Viktoriya Morozova Sep 2022

Mechanism Of Tau Propagation: Putative Therapeutic Approaches, Viktoriya Morozova

Dissertations, Theses, and Capstone Projects

One of the characteristics of Alzheimer’s disease and associated tauopathies is the accumulation and aggregation of hyperphosphorylated tau protein. The biological activity of tau is to bind to tubulin and promote its assembly into microtubules with subsequent stabilization of the latter. When tau gets hyperphosphorylated it cannot bind to tubulin and carry on its function, instead, it binds to normal tau and sequesters it from microtubules leading to disruption of microtubular assembly and ultimately to the death of neurons. Our lab had previously shown that tau phosphorylation sites 199, 212, 231, and 262, combined with the FTDP-17 mutation R406W (Pathological …


Terror En El Orinoco: Formas Del Espanto Animal Y Vegetal En La Historia Natural De José Gumilla, Roberto E. Martinez Bachrich Sep 2022

Terror En El Orinoco: Formas Del Espanto Animal Y Vegetal En La Historia Natural De José Gumilla, Roberto E. Martinez Bachrich

Dissertations, Theses, and Capstone Projects

“Terror in the Orinoco: Forms of Animal and Plant Horror in the Natural History of José Gumilla”, analyzes the repertoire of terrifying plants and animals that the Spanish Jesuit missionary José Gumilla described in his 1745 compendium El Orinoco Ilustrado y Defendido —a work that, surprisingly, has not been read from the perspective of animal and plant studies. Based on Spanish old models of the natural history of the Indies (Fernández de Oviedo, Acosta), Gumilla reconstructs an archive of monstrous beings (alligators, piranhas, snakes, poisonous plants) that challenges old medieval religious discourses when confronted with the nascent illustrated discourses. My …


Transcriptional Mechanisms Of Neuroprotection In Excitotoxicity Driven Neurodegeneration In C. Elegans, Zelda Z. Mendelowitz Sep 2022

Transcriptional Mechanisms Of Neuroprotection In Excitotoxicity Driven Neurodegeneration In C. Elegans, Zelda Z. Mendelowitz

Dissertations, Theses, and Capstone Projects

Excitotoxicity is notorious for triggering neuronal cell death in both developmental and adult-onset neurodegenerative diseases. In excitotoxicity, excessive concentrations of Glutamate in the synapse overstimulate Glutamate Receptors (GluRs) on postsynaptic neurons. While GluR mediated degenerative mechanisms remain obscure, GluR activation was surprisingly found to also have a neuroprotective effect through activation of specific transcriptional programs. To identify evolutionarily conserved transcriptional programs in neuroprotection we use a C. elegans model of excitotoxic necrosis (glt-3;nuIs5). We have identified that non-canonical activation of the transcription factor CRH-1/CREB mediates neuroprotection in our excitotoxicity model. We found the Histone Acetyl Transferase, MYS-1/KAT6, and the neuronal …


Elucidation Of Gene Essentiality And Genetic Determinants Of Intrinsic P-Aminosalicylic Acid Resistance In Mycobacterium Kansasii, Keith J. Levendosky Sep 2022

Elucidation Of Gene Essentiality And Genetic Determinants Of Intrinsic P-Aminosalicylic Acid Resistance In Mycobacterium Kansasii, Keith J. Levendosky

Dissertations, Theses, and Capstone Projects

Mycobacterium kansasii (Mk) is an opportunistic pathogen capable of causing tuberculosis-like pulmonary disease in immunocompromised individuals and those with other risk factors including chronic obstructive pulmonary disease or malignancy. Mk is frequently isolated from man-made water sources where it forms resilient biofilms, posing a health risk to these susceptible individuals. Despite its medical relevance as an environmental pathogen, and a close phylogenetic relationship with the obligate pathogen Mycobacterium tuberculosis (Mtb), few studies to date have probed the molecular biology and genetics of Mk. Here, we sought to apply a transposon (Tn) mutagenesis tool to dissect …


Genetic Loci And Prioritization Of Genes For Kidney Function Decline Derived From A Meta-Analysis Of 62 Longitudinal Genome-Wide Association Studies, Mathias Gorski, Humaira Rasheed, Alexander Teumer, Laurent F Thomas, Sarah E Graham, Thomas W Winkler, Klaus J Stark, Jin-Fang Chai, Bamidele O Tayo, Matthias Wuttke, Yong Li, Adrienne Tin, Tarunveer S Ahluwalia, Johan Ärnlöv, Bjørn Olav Åsvold, Stephan J L Bakker, Bernhard Banas, Nisha Bansal, Mary L Biggs, Ginevra Biino, Michael Böhnke, Eric Boerwinkle, Erwin P Bottinger, Hermann Brenner, Ben Brumpton, Robert J Carroll, Layal Chaker, John Chalmers, Miao-Li Chee, Miao-Ling Chee, Ching-Yu Cheng, Audrey Y Chu, Marina Ciullo, Massimiliano Cocca, James P Cook, Josef Coresh, Daniele Cusi, Martin H De Borst, Frauke Degenhardt, Kai-Uwe Eckardt, Karlhans Endlich, Michele K Evans, Mary F Feitosa, Andre Franke, Sandra Freitag-Wolf, Christian Fuchsberger, Piyush Gampawar, Ron T Gansevoort, Mohsen Ghanbari, Sahar Ghasemi, Vilmantas Giedraitis, Christian Gieger, Daniel F Gudbjartsson, Stein Hallan, Pavel Hamet, Asahi Hishida, Kevin Ho, Edith Hofer, Bernd Holleczek, Hilma Holm, Anselm Hoppmann, Katrin Horn, Nina Hutri-Kähönen, Kristian Hveem, Shih-Jen Hwang, M Arfan Ikram, Navya Shilpa Josyula, Bettina Jung, Mika Kähönen, Irma Karabegović, Chiea-Chuen Khor, Wolfgang Koenig, Holly Kramer, Bernhard K Krämer, Brigitte Kühnel, Johanna Kuusisto, Markku Laakso, Leslie A Lange, Terho Lehtimäki, Man Li, Wolfgang Lieb, Lifelines Cohort Study, Lars Lind, Cecilia M Lindgren, Ruth J F Loos, Mary Ann Lukas, Leo-Pekka Lyytikäinen, Anubha Mahajan, Pamela R Matias-Garcia, Christa Meisinger, Thomas Meitinger, Olle Melander, Yuri Milaneschi, Pashupati P Mishra, Nina Mononen, Andrew P Morris, Josyf C Mychaleckyj, Girish N Nadkarni, Mariko Naito, Masahiro Nakatochi, Mike A Nalls, Matthias Nauck, Kjell Nikus, Boting Ning, Ilja M Nolte, Teresa Nutile, Michelle L O'Donoghue, Jeffrey O'Connell, Isleifur Olafsson, Marju Orho-Melander, Afshin Parsa, Sarah A Pendergrass, Brenda W J H Penninx, Mario Pirastu, Michael H Preuss, Bruce M Psaty, Laura M Raffield, Olli T Raitakari, Myriam Rheinberger, Kenneth M Rice, Federica Rizzi, Alexander R Rosenkranz, Peter Rossing, Jerome I Rotter, Daniela Ruggiero, Kathleen A Ryan, Charumathi Sabanayagam, Erika Salvi, Helena Schmidt, Reinhold Schmidt, Markus Scholz, Ben Schöttker, Christina-Alexandra Schulz, Sanaz Sedaghat, Christian M Shaffer, Karsten B Sieber, Xueling Sim, Mario Sims, Harold Snieder, Kira J Stanzick, Unnur Thorsteinsdottir, Hannah Stocker, Konstantin Strauch, Heather M Stringham, Patrick Sulem, Silke Szymczak, Kent D Taylor, Chris H L Thio, Johanne Tremblay, Simona Vaccargiu, Pim Van Der Harst, Peter J Van Der Most, Niek Verweij, Uwe Völker, Kenji Wakai, Melanie Waldenberger, Lars Wallentin, Stefan Wallner, Judy Wang, Dawn M Waterworth, Harvey D White, Cristen J Willer, Tien-Yin Wong, Mark Woodward, Qiong Yang, Laura M Yerges-Armstrong, Martina Zimmermann, Alan B Zonderman, Tobias Bergler, Kari Stefansson, Carsten A Böger, Cristian Pattaro, Anna Köttgen, Florian Kronenberg, Iris M Heid Sep 2022

Genetic Loci And Prioritization Of Genes For Kidney Function Decline Derived From A Meta-Analysis Of 62 Longitudinal Genome-Wide Association Studies, Mathias Gorski, Humaira Rasheed, Alexander Teumer, Laurent F Thomas, Sarah E Graham, Thomas W Winkler, Klaus J Stark, Jin-Fang Chai, Bamidele O Tayo, Matthias Wuttke, Yong Li, Adrienne Tin, Tarunveer S Ahluwalia, Johan Ärnlöv, Bjørn Olav Åsvold, Stephan J L Bakker, Bernhard Banas, Nisha Bansal, Mary L Biggs, Ginevra Biino, Michael Böhnke, Eric Boerwinkle, Erwin P Bottinger, Hermann Brenner, Ben Brumpton, Robert J Carroll, Layal Chaker, John Chalmers, Miao-Li Chee, Miao-Ling Chee, Ching-Yu Cheng, Audrey Y Chu, Marina Ciullo, Massimiliano Cocca, James P Cook, Josef Coresh, Daniele Cusi, Martin H De Borst, Frauke Degenhardt, Kai-Uwe Eckardt, Karlhans Endlich, Michele K Evans, Mary F Feitosa, Andre Franke, Sandra Freitag-Wolf, Christian Fuchsberger, Piyush Gampawar, Ron T Gansevoort, Mohsen Ghanbari, Sahar Ghasemi, Vilmantas Giedraitis, Christian Gieger, Daniel F Gudbjartsson, Stein Hallan, Pavel Hamet, Asahi Hishida, Kevin Ho, Edith Hofer, Bernd Holleczek, Hilma Holm, Anselm Hoppmann, Katrin Horn, Nina Hutri-Kähönen, Kristian Hveem, Shih-Jen Hwang, M Arfan Ikram, Navya Shilpa Josyula, Bettina Jung, Mika Kähönen, Irma Karabegović, Chiea-Chuen Khor, Wolfgang Koenig, Holly Kramer, Bernhard K Krämer, Brigitte Kühnel, Johanna Kuusisto, Markku Laakso, Leslie A Lange, Terho Lehtimäki, Man Li, Wolfgang Lieb, Lifelines Cohort Study, Lars Lind, Cecilia M Lindgren, Ruth J F Loos, Mary Ann Lukas, Leo-Pekka Lyytikäinen, Anubha Mahajan, Pamela R Matias-Garcia, Christa Meisinger, Thomas Meitinger, Olle Melander, Yuri Milaneschi, Pashupati P Mishra, Nina Mononen, Andrew P Morris, Josyf C Mychaleckyj, Girish N Nadkarni, Mariko Naito, Masahiro Nakatochi, Mike A Nalls, Matthias Nauck, Kjell Nikus, Boting Ning, Ilja M Nolte, Teresa Nutile, Michelle L O'Donoghue, Jeffrey O'Connell, Isleifur Olafsson, Marju Orho-Melander, Afshin Parsa, Sarah A Pendergrass, Brenda W J H Penninx, Mario Pirastu, Michael H Preuss, Bruce M Psaty, Laura M Raffield, Olli T Raitakari, Myriam Rheinberger, Kenneth M Rice, Federica Rizzi, Alexander R Rosenkranz, Peter Rossing, Jerome I Rotter, Daniela Ruggiero, Kathleen A Ryan, Charumathi Sabanayagam, Erika Salvi, Helena Schmidt, Reinhold Schmidt, Markus Scholz, Ben Schöttker, Christina-Alexandra Schulz, Sanaz Sedaghat, Christian M Shaffer, Karsten B Sieber, Xueling Sim, Mario Sims, Harold Snieder, Kira J Stanzick, Unnur Thorsteinsdottir, Hannah Stocker, Konstantin Strauch, Heather M Stringham, Patrick Sulem, Silke Szymczak, Kent D Taylor, Chris H L Thio, Johanne Tremblay, Simona Vaccargiu, Pim Van Der Harst, Peter J Van Der Most, Niek Verweij, Uwe Völker, Kenji Wakai, Melanie Waldenberger, Lars Wallentin, Stefan Wallner, Judy Wang, Dawn M Waterworth, Harvey D White, Cristen J Willer, Tien-Yin Wong, Mark Woodward, Qiong Yang, Laura M Yerges-Armstrong, Martina Zimmermann, Alan B Zonderman, Tobias Bergler, Kari Stefansson, Carsten A Böger, Cristian Pattaro, Anna Köttgen, Florian Kronenberg, Iris M Heid

Faculty, Staff and Student Publications

Estimated glomerular filtration rate (eGFR) reflects kidney function. Progressive eGFR-decline can lead to kidney failure, necessitating dialysis or transplantation. Hundreds of loci from genome-wide association studies (GWAS) for eGFR help explain population cross section variability. Since the contribution of these or other loci to eGFR-decline remains largely unknown, we derived GWAS for annual eGFR-decline and meta-analyzed 62 longitudinal studies with eGFR assessed twice over time in all 343,339 individuals and in high-risk groups. We also explored different covariate adjustment. Twelve genome-wide significant independent variants for eGFR-decline unadjusted or adjusted for eGFR-baseline (11 novel, one known for this phenotype), including nine …


Lif-Ting Ferroptosis To Improve Liver Cancer Therapy, Fan Yao, Yang Zhao, Li Ma Sep 2022

Lif-Ting Ferroptosis To Improve Liver Cancer Therapy, Fan Yao, Yang Zhao, Li Ma

Faculty, Staff and Student Publications

No abstract provided.


Addressing Patient Heterogeneity In Disease Predictive Model Development, Xu Gao, Weining Shen, Jing Ning, Ziding Feng, Jianhua Hu Sep 2022

Addressing Patient Heterogeneity In Disease Predictive Model Development, Xu Gao, Weining Shen, Jing Ning, Ziding Feng, Jianhua Hu

Faculty, Staff and Student Publications

This paper addresses patient heterogeneity associated with prediction problems in biomedical applications. We propose a systematic hypothesis testing approach to determine the existence of patient subgroup structure and the number of subgroups in patient population if subgroups exist. A mixture of generalized linear models is considered to model the relationship between the disease outcome and patient characteristics and clinical factors, including targeted biomarker profiles. We construct a test statistic based on expectation maximization (EM) algorithm and derive its asymptotic distribution under the null hypothesis. An important computational advantage of the test is that the involved parameter estimates under the complex …


Repeatability And Reproducibility Assessment Of The Apparent Diffusion Coefficient In The Prostate: A Trial Of The Ecog-Acrin Research Group (Acrin 6701), Michael A Boss, Bradley S Snyder, Eunhee Kim, Dena Flamini, Sarah Englander, Naveen Gumpeni, Haesun Choi, Adam T Froemming, Thorsten Persigehl, Matthew S Davenport, Dariya Malyarenko, Thomas L Chenevert, Mark A Rosen Sep 2022

Repeatability And Reproducibility Assessment Of The Apparent Diffusion Coefficient In The Prostate: A Trial Of The Ecog-Acrin Research Group (Acrin 6701), Michael A Boss, Bradley S Snyder, Eunhee Kim, Dena Flamini, Sarah Englander, Naveen Gumpeni, Haesun Choi, Adam T Froemming, Thorsten Persigehl, Matthew S Davenport, Dariya Malyarenko, Thomas L Chenevert, Mark A Rosen

Faculty, Staff and Student Publications

Background: Uncertainty regarding the reproducibility of the apparent diffusion coefficient (ADC) hampers the use of quantitative diffusion-weighted imaging (DWI) in evaluation of the prostate with magnetic resonance imaging MRI. The quantitative imaging biomarkers alliance (QIBA) profile for quantitative DWI claims a within-subject coefficient of variation (wCV) for prostate lesion ADC of 0.17. Improved understanding of ADC reproducibility would aid the use of quantitative diffusion in prostate MRI evaluation.

Purpose: Evaluation of the repeatability (same-day) and reproducibility (multi-day) of whole-prostate and focal-lesion ADC assessment in a multi-site setting.

Study type: Prospective multi-institutional.

Subjects: Twenty-nine males, ages 53 to 80 (median 63) …


Car Treg Cells: Prime Suspects In Therapeutic Resistance, Neeraj Saini, Sattva S Neelapu Sep 2022

Car Treg Cells: Prime Suspects In Therapeutic Resistance, Neeraj Saini, Sattva S Neelapu

Faculty, Staff and Student Publications

Using comprehensive single-cell profiling, two studies reveal the molecular phenotypes of CAR T cells associated with durable response in patients with lymphoma, and highlight the role of CAR regulatory T cells in mediating resistance.


Imaging Characteristics Of 4th Ventricle Subependymoma, Ali S Haider, Tarek Y El Ahmadieh, Maryam Haider, Kimmo J Hatanpaa, Marco C Pinho, Raymond Sawaya, Donald F Schomer, Maria Gule-Monroe Sep 2022

Imaging Characteristics Of 4th Ventricle Subependymoma, Ali S Haider, Tarek Y El Ahmadieh, Maryam Haider, Kimmo J Hatanpaa, Marco C Pinho, Raymond Sawaya, Donald F Schomer, Maria Gule-Monroe

Faculty, Staff and Student Publications

Purpose: Subependymomas located within the 4th ventricle are rare, and the literature describing imaging characteristics is sparse. Here, we describe the clinical and radiological characteristics of 29 patients with 4th ventricle subependymoma.

Methods: This is a retrospective multi-center study performed after Institutional Review Board (IRB) approval. Patients diagnosed with suspected 4th ventricle subependymoma were identified. A review of clinical, radiology, and pathology reports along with magnetic resonance imaging (MRI) images was performed.

Results: Twenty-nine patients, including 6 females, were identified. Eighteen patients underwent surgery with histopathological confirmation of subependymoma. The median age at diagnosis was 52 years. Median tumor volume …


Intermediary Role Of Lung Alveolar Type 1 Cells In Epithelial Repair Upon Sendai Virus Infection, Belinda J Hernandez, Margo P Cain, Anne M Lynch, Jose R Flores, Michael J Tuvim, Jichao Chen Sep 2022

Intermediary Role Of Lung Alveolar Type 1 Cells In Epithelial Repair Upon Sendai Virus Infection, Belinda J Hernandez, Margo P Cain, Anne M Lynch, Jose R Flores, Michael J Tuvim, Jichao Chen

Faculty, Staff and Student Publications

The lung epithelium forms the first barrier against respiratory pathogens and noxious chemicals; however, little is known about how more than 90% of this barrier, made of AT1 (alveolar type 1) cells, responds to injury. Using the Sendai virus to model natural infection in mice, we find evidence that AT1 cells have an intermediary role by persisting in areas depleted of AT2 cells, upregulating IFN responsive genes, and receding from invading airway cells. Sendai virus infection mobilizes airway cells to form alveolar SOX2+ (Sry-box 2+) clusters without differentiating into AT1 or AT2 cells. Large AT2 cell-depleted areas remain covered by …


International Expert Consensus On Immunotherapy For Early-Stage Non-Small Cell Lung Cancer, Wenhua Liang, Kaican Cai, Qingdong Cao, Chun Chen, Haiquan Chen, Ke-Neng Chen, Tianqing Chu, Yuchao Dong, Jiang Fan, Wentao Fang, Junke Fu, Xiangning Fu, Shugeng Gao, Di Ge, Guojun Geng, Qing Geng, Jie He, Jian Hu, Jie Hu, Wei-Dong Hu, Feng Jiang, Tao Jiang, Wenjie Jiao, He-Cheng Li, Qiang Li, Shanqing Li, Shuben Li, Xiangnan Li, Yong-De Liao, Changhong Liu, Hongxu Liu, Yang Liu, Zhuming Lu, Qingquan Luo, Haitao Ma, Xiaojie Pan, Guibin Qiao, Shengxiang Ren, Weiyu Shen, Yong Song, Daqiang Sun, Guangsuo Wang, Jie Wang, Mengzhao Wang, Qiwen Wang, Wen-Xiang Wang, Li Wei, Ming Wu, Nan Wu, Hui Xia, Shi-Dong Xu, Fan Yang, Kang Yang, Yue Yang, Fenglei Yu, Zhen-Tao Yu, Dong-Sheng Yue, Lanjun Zhang, Weidong Zhang, Zhenfa Zhang, Guofang Zhao, Jian Zhao, Xiaojing Zhao, Chengzhi Zhou, Qinghua Zhou, Kunshou Zhu, Yuming Zhu, Toyoaki Hida, Wolfram C M Dempke, Antonio Rossi, Marc De Perrot, Robert A Ramirez, Mariano Provencio, Jay M Lee, Antonio Passaro, Lorenzo Spaggiari, Jonathan Spicer, Nicolas Girard, Patrick M Forde, Tony S K Mok, Tina Cascone, Jianxing He Sep 2022

International Expert Consensus On Immunotherapy For Early-Stage Non-Small Cell Lung Cancer, Wenhua Liang, Kaican Cai, Qingdong Cao, Chun Chen, Haiquan Chen, Ke-Neng Chen, Tianqing Chu, Yuchao Dong, Jiang Fan, Wentao Fang, Junke Fu, Xiangning Fu, Shugeng Gao, Di Ge, Guojun Geng, Qing Geng, Jie He, Jian Hu, Jie Hu, Wei-Dong Hu, Feng Jiang, Tao Jiang, Wenjie Jiao, He-Cheng Li, Qiang Li, Shanqing Li, Shuben Li, Xiangnan Li, Yong-De Liao, Changhong Liu, Hongxu Liu, Yang Liu, Zhuming Lu, Qingquan Luo, Haitao Ma, Xiaojie Pan, Guibin Qiao, Shengxiang Ren, Weiyu Shen, Yong Song, Daqiang Sun, Guangsuo Wang, Jie Wang, Mengzhao Wang, Qiwen Wang, Wen-Xiang Wang, Li Wei, Ming Wu, Nan Wu, Hui Xia, Shi-Dong Xu, Fan Yang, Kang Yang, Yue Yang, Fenglei Yu, Zhen-Tao Yu, Dong-Sheng Yue, Lanjun Zhang, Weidong Zhang, Zhenfa Zhang, Guofang Zhao, Jian Zhao, Xiaojing Zhao, Chengzhi Zhou, Qinghua Zhou, Kunshou Zhu, Yuming Zhu, Toyoaki Hida, Wolfram C M Dempke, Antonio Rossi, Marc De Perrot, Robert A Ramirez, Mariano Provencio, Jay M Lee, Antonio Passaro, Lorenzo Spaggiari, Jonathan Spicer, Nicolas Girard, Patrick M Forde, Tony S K Mok, Tina Cascone, Jianxing He

Faculty, Staff and Student Publications

No abstract provided.


Idh1 Prr32h Ctdna And D-2-Hydroxyglutarate As Csf Biomarkers In Patients With Idh-Mutant Gliomas, Yoko Fujita, Luis Nunez-Rubiano, Antonio Dono, Allison Bellman, Mauli Shah, Vasanta Putluri, Nagireddy Putluri, Roy F Riascos, Jay-Jiguang Zhu, Yoshua Esquenazi, Leomar Y Ballester Sep 2022

Idh1 Prr32h Ctdna And D-2-Hydroxyglutarate As Csf Biomarkers In Patients With Idh-Mutant Gliomas, Yoko Fujita, Luis Nunez-Rubiano, Antonio Dono, Allison Bellman, Mauli Shah, Vasanta Putluri, Nagireddy Putluri, Roy F Riascos, Jay-Jiguang Zhu, Yoshua Esquenazi, Leomar Y Ballester

Faculty, Staff and Student Publications

INTRODUCTION: We aimed to evaluate IDH1 p.R132H mutation and 2-hydroxyglutarate (2HG) in cerebrospinal fluid (CSF) as biomarkers for patients with IDH-mutant gliomas.

METHODS: CSF was collected from patients with infiltrating glioma, and 2HG levels were measured by liquid chromatography-mass spectrometry. IDH1 p.R132H mutant allele frequency (MAF) in CSF-ctDNA was measured by digital droplet PCR (ddPCR). Tumor volume was measured from standard-of-care magnetic resonance images.

RESULTS: The study included 48 patients, 6 with IDH-mutant and 42 with IDH-wildtype gliomas, and 57 samples, 9 from the patients with IDH-mutant and 48 from the patients with IDH-wildtype gliomas. ctDNA was detected in 7 …


Development And Validation Of A Checklist For Use With Automatically Generated Radiotherapy Plans, Kelly A Nealon, Laurence E Court, Raphael J Douglas, Lifei Zhang, Eun Young Han Sep 2022

Development And Validation Of A Checklist For Use With Automatically Generated Radiotherapy Plans, Kelly A Nealon, Laurence E Court, Raphael J Douglas, Lifei Zhang, Eun Young Han

Faculty, Staff and Student Publications

Purpose: To develop a checklist that improves the rate of error detection during the plan review of automatically generated radiotherapy plans.

Methods: A custom checklist was developed using guidance from American Association of Physicists in Medicine task groups 275 and 315 and the results of a failure modes and effects analysis of the Radiation Planning Assistant (RPA), an automated contouring and treatment planning tool. The preliminary checklist contained 90 review items for each automatically generated plan. In the first study, eight physicists were recruited from our institution who were familiar with the RPA. Each physicist reviewed 10 artificial intelligence-generated resident …


Auto-Detection And Segmentation Of Involved Lymph Nodes In Hpv-Associated Oropharyngeal Cancer Using A Convolutional Deep Learning Neural Network, Nicolette Taku, Kareem A Wahid, Lisanne V Van Dijk, Jaakko Sahlsten, Joel Jaskari, Clifton D Fuller Sep 2022

Auto-Detection And Segmentation Of Involved Lymph Nodes In Hpv-Associated Oropharyngeal Cancer Using A Convolutional Deep Learning Neural Network, Nicolette Taku, Kareem A Wahid, Lisanne V Van Dijk, Jaakko Sahlsten, Joel Jaskari, Clifton D Fuller

Faculty, Staff and Student Publications

PURPOSE: Segmentation of involved lymph nodes on head and neck computed tomography (HN-CT) scans is necessary for the radiotherapy planning of early-stage human papilloma virus (HPV) associated oropharynx cancers (OPC). We aimed to train a deep learning convolutional neural network (DL-CNN) to segment involved lymph nodes on HN-CT scans.

METHODS: Ground-truth segmentation of involved nodes was performed on pre-surgical HN-CT scans for 90 patients who underwent levels II-IV neck dissection for node-positive HPV-OPC (training/validation [n = 70] and testing [n = 20]). A 5-fold cross validation approach was used to train 5 DL-CNN sub-models based on a residual U-net architecture. …


High Prevalence Of Osteopathy In Chronic Pancreatitis: A Cross-Sectional Analysis From The Proceed Study, Phil A Hart, Dhiraj Yadav, Liang Li, Savi Appana, William Fisher, Chris E Forsmark, Stephen Pandol, Mark D Topazian, Stephen K Van Den Eden, Santhi Swaroop Vege, David Bradley, Jose Serrano, Darwin L Conwell, Consortium For The Study Of Chronic Pancreatitis, Diabetes, And Pancreatic Cancer (Cpdpc) Sep 2022

High Prevalence Of Osteopathy In Chronic Pancreatitis: A Cross-Sectional Analysis From The Proceed Study, Phil A Hart, Dhiraj Yadav, Liang Li, Savi Appana, William Fisher, Chris E Forsmark, Stephen Pandol, Mark D Topazian, Stephen K Van Den Eden, Santhi Swaroop Vege, David Bradley, Jose Serrano, Darwin L Conwell, Consortium For The Study Of Chronic Pancreatitis, Diabetes, And Pancreatic Cancer (Cpdpc)

Faculty, Staff and Student Publications

osteopenia). However, existing literature is mostly limited to retrospective or administrative studies that have not clearly defined the prevalence and risk factors. Our aim was to identify patient- and disease-related associations with osteopathy in a prospective cohort study of CP.

Methods: We studied 282 subjects with definitive CP enrolled in the PROCEED study who had a baseline dual-energy X-ray absorptiometry (DXA) scan. Osteopenia and osteoporosis were defined using the lowest T-scores. Clinical data were collected using standardized case report forms. Comparisons were performed with a multivariate logistic regression model with forward selection to identify risk factors for osteopathy.

Results: The …


An Interdisciplinary Consensus On The Management Of Brain Metastases In Patients With Renal Cell Carcinoma, Elshad Hasanov, Debra Nana Yeboa, Mathew D Tucker, Todd A Swanson, Thomas Hendrix Beckham, Chibawanye I Ene, Sophie Derks, Marion Smits, Shaan Dudani, Daniel Y C Heng, Priscilla K Brastianos, Axel Bex, Sahin Hanalioglu, Jeffrey S Weinberg, Laure Hirsch, Maria I Carlo, Ayal Aizer, Paul David Brown, Mehmet Asim Bilen, Eric Lin Chang, Jerry Jaboin, James Brugarolas, Toni K Choueiri, Michael B Atkins, Bradley A Mcgregor, Lia M Halasz, Toral R Patel, Scott G Soltys, David F Mcdermott, James Bradley Elder, Mustafa K Baskaya, James B Yu, Robert Timmerman, Michelle Miran Kim, Melike Mut, James Markert, Kathryn Beal, Nizar M Tannir, George Samandouras, Frederick F Lang, Rachel Giles, Eric Jonasch Sep 2022

An Interdisciplinary Consensus On The Management Of Brain Metastases In Patients With Renal Cell Carcinoma, Elshad Hasanov, Debra Nana Yeboa, Mathew D Tucker, Todd A Swanson, Thomas Hendrix Beckham, Chibawanye I Ene, Sophie Derks, Marion Smits, Shaan Dudani, Daniel Y C Heng, Priscilla K Brastianos, Axel Bex, Sahin Hanalioglu, Jeffrey S Weinberg, Laure Hirsch, Maria I Carlo, Ayal Aizer, Paul David Brown, Mehmet Asim Bilen, Eric Lin Chang, Jerry Jaboin, James Brugarolas, Toni K Choueiri, Michael B Atkins, Bradley A Mcgregor, Lia M Halasz, Toral R Patel, Scott G Soltys, David F Mcdermott, James Bradley Elder, Mustafa K Baskaya, James B Yu, Robert Timmerman, Michelle Miran Kim, Melike Mut, James Markert, Kathryn Beal, Nizar M Tannir, George Samandouras, Frederick F Lang, Rachel Giles, Eric Jonasch

Faculty, Staff and Student Publications

Brain metastases are a challenging manifestation of renal cell carcinoma. We have a limited understanding of brain metastasis tumor and immune biology, drivers of resistance to systemic treatment, and their overall poor prognosis. Current data support a multimodal treatment strategy with radiation treatment and/or surgery. Nonetheless, the optimal approach for the management of brain metastases from renal cell carcinoma remains unclear. To improve patient care, the authors sought to standardize practical management strategies. They performed an unstructured literature review and elaborated on the current management strategies through an international group of experts from different disciplines assembled via the network of …


Aapm Medical Physics Practice Guideline 5b: Commissioning And Qa Of Treatment Planning Dose Calculations-Megavoltage Photon And Electron Beams, Mark W Geurts, Dustin J Jacqmin, Lindsay E Jones, Stephen F Kry, Dimitris N Mihailidis, Timothy Ritter, Nicholai E Wingreen Sep 2022

Aapm Medical Physics Practice Guideline 5b: Commissioning And Qa Of Treatment Planning Dose Calculations-Megavoltage Photon And Electron Beams, Mark W Geurts, Dustin J Jacqmin, Lindsay E Jones, Stephen F Kry, Dimitris N Mihailidis, Timothy Ritter, Nicholai E Wingreen

Faculty, Staff and Student Publications

The American Association of Physicists in Medicine (AAPM) is a nonprofit professional society whose primary purposes are to advance the science, education, and professional practice of medical physics. The AAPM has more than 8000 members and is the principal organization of medical physicists in the United States. The AAPM will periodically define new practice guidelines for medical physics practice to help advance the science of medical physics and to improve the quality of service to patients throughout the United States. Existing medical physics practice guidelines will be reviewed for the purpose of revision or renewal, as appropriate, on their fifth …


Seqcode: A Nomenclatural Code For Prokaryotes Described From Sequence Data, Brian P. Hedlund, Maria Chuvochina, Philip Hugenholtz, Konstantinos T. Konstantinidis, Alison E. Murray, Marike Palmer, Donovan H. Parks, Alexander J. Probst, Anna-Louise Reysenbach, Multiple Additional Authors Sep 2022

Seqcode: A Nomenclatural Code For Prokaryotes Described From Sequence Data, Brian P. Hedlund, Maria Chuvochina, Philip Hugenholtz, Konstantinos T. Konstantinidis, Alison E. Murray, Marike Palmer, Donovan H. Parks, Alexander J. Probst, Anna-Louise Reysenbach, Multiple Additional Authors

Biology Faculty Publications and Presentations

Most prokaryotes are not available as pure cultures and therefore ineligible for naming under the rules and recommendations of the International Code of Nomenclature of Prokaryotes (ICNP). Here we summarize the development of the SeqCode, a code of nomenclature under which genome sequences serve as nomenclatural types. This code enables valid publication of names of prokaryotes based upon isolate genome, metagenome-assembled genome or single-amplified genome sequences. Otherwise, it is similar to the ICNP with regard to the formation of names and rules of priority. It operates through the SeqCode Registry (https://seqco.de/), a registration portal through which names and …


Combined Impacts Of Co2 Enrichment And Water Stress On Growth And Physiology Of Plants Inoculated With An Acc Deaminase Producing Rhizobacterium, Shaijal Babu Ppoyil Sep 2022

Combined Impacts Of Co2 Enrichment And Water Stress On Growth And Physiology Of Plants Inoculated With An Acc Deaminase Producing Rhizobacterium, Shaijal Babu Ppoyil

Dissertations

This study assessed the water stress mitigating effects of elevated CO2 on Chloris gayana Kunth cv. Katambora (Rhodes grass) and Medicago sativa L. cv. SuperFast (alfalfa) plants, and how the seed inoculation with one of the ACC deaminase producing plant growth promoting rhizobacterium (PGPR) supplemented the stand-alone plant drought stress mitigating effects of elevated CO2, under different growing conditions in the United Arab Emirates (UAE). Multiple growth and physiology related variables were measured from the plants in response to different treatment combinations made of CO2, watering treatments (WT), and PGPR, based on the research design …


The Utilization Of Crispr/Cas9 In Monogenic Disorders Authors, Shauna M. Mellor Aug 2022

The Utilization Of Crispr/Cas9 In Monogenic Disorders Authors, Shauna M. Mellor

Spectra Undergraduate Research Journal

This paper is a literature review of various scientific research papers, exploring the recent scientific advancement in the field of genetic engineering. The research presented is a foundational tool, building awareness on the implications of CRISPR/ Cas9 technology. CRISPR/ Cas9 was first discovered through the study of bacterial immune systems, fighting against viral infections. Manipulation of the Cas9 protein would eventually lead to target specific, gene-altering medicines for human organisms. CRISPR/ Cas 9 technology has begun to show promise as an effective treatment for certain monogenic disorders. Despite this, time is required before its efficacy as a proven genetic treatment …


Brainless But Smart: Investigating Cognitive-Like Behaviors In The Acellular Slime Mold Physarum Polycephalum, Subash Kusum Ray Aug 2022

Brainless But Smart: Investigating Cognitive-Like Behaviors In The Acellular Slime Mold Physarum Polycephalum, Subash Kusum Ray

Dissertations

Evolutionary pressures to improve fitness, have enabled living systems to make adaptive decisions when faced with heterogeneous and changing environmental and physiological conditions. This dissertation investigated the mechanisms of how environmental and physiological factors affect the behaviors of non-neuronal organisms. The acellular slime mold Physarum polycephalum was used as the model organism, which is a macroscopic, unicellular organism, that self-organizes into a network of intersecting tubules. Without using neurons, P. polycephalum can solve labyrinth mazes, build efficient tubule networks, and make adaptive decisions when faced with complicated trade-offs, such as between food quality and risk, speed and accuracy, and exploration …