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  1. Article ; Online: Recent Research Trends in Neuroinflammatory and Neurodegenerative Disorders.

    Cohen, Jessica / Mathew, Annette / Dourvetakis, Kirk D / Sanchez-Guerrero, Estella / Pangeni, Rajendra P / Gurusamy, Narasimman / Aenlle, Kristina K / Ravindran, Geeta / Twahir, Assma / Isler, Dylan / Sosa-Garcia, Sara Rukmini / Llizo, Axel / Bested, Alison C / Theoharides, Theoharis C / Klimas, Nancy G / Kempuraj, Duraisamy

    Cells

    2024  Volume 13, Issue 6

    Abstract: Neuroinflammatory and neurodegenerative disorders including Alzheimer's disease (AD), Parkinson's disease (PD), traumatic brain injury (TBI) and Amyotrophic lateral sclerosis (ALS) are chronic major health disorders. The exact mechanism of the ... ...

    Abstract Neuroinflammatory and neurodegenerative disorders including Alzheimer's disease (AD), Parkinson's disease (PD), traumatic brain injury (TBI) and Amyotrophic lateral sclerosis (ALS) are chronic major health disorders. The exact mechanism of the neuroimmune dysfunctions of these disease pathogeneses is currently not clearly understood. These disorders show dysregulated neuroimmune and inflammatory responses, including activation of neurons, glial cells, and neurovascular unit damage associated with excessive release of proinflammatory cytokines, chemokines, neurotoxic mediators, and infiltration of peripheral immune cells into the brain, as well as entry of inflammatory mediators through damaged neurovascular endothelial cells, blood-brain barrier and tight junction proteins. Activation of glial cells and immune cells leads to the release of many inflammatory and neurotoxic molecules that cause neuroinflammation and neurodegeneration. Gulf War Illness (GWI) and myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) are chronic disorders that are also associated with neuroimmune dysfunctions. Currently, there are no effective disease-modifying therapeutic options available for these diseases. Human induced pluripotent stem cell (iPSC)-derived neurons, astrocytes, microglia, endothelial cells and pericytes are currently used for many disease models for drug discovery. This review highlights certain recent trends in neuroinflammatory responses and iPSC-derived brain cell applications in neuroinflammatory disorders.
    MeSH term(s) Humans ; Neuroinflammatory Diseases ; Endothelial Cells ; Induced Pluripotent Stem Cells ; Neurodegenerative Diseases ; Inflammation
    Language English
    Publishing date 2024-03-14
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2661518-6
    ISSN 2073-4409 ; 2073-4409
    ISSN (online) 2073-4409
    ISSN 2073-4409
    DOI 10.3390/cells13060511
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Molecular Phenotypes of Acute Respiratory Distress Syndrome in the ROSE Trial Have Differential Outcomes and Gene Expression Patterns That Differ at Baseline and Longitudinally over Time.

    Sinha, Pratik / Neyton, Lucile / Sarma, Aartik / Wu, Nelson / Jones, Chayse / Zhuo, Hanjing / Liu, Kathleen D / Sanchez Guerrero, Estella / Ghale, Rajani / Love, Christina / Mick, Eran / Delucchi, Kevin L / Langelier, Charles R / Thompson, B Taylor / Matthay, Michael A / Calfee, Carolyn S

    American journal of respiratory and critical care medicine

    2024  Volume 209, Issue 7, Page(s) 816–828

    Abstract: Rationale: ...

    Abstract Rationale:
    MeSH term(s) Humans ; Phenotype ; Biomarkers ; Respiratory Distress Syndrome ; Blood Proteins/genetics ; Gene Expression
    Chemical Substances Biomarkers ; Blood Proteins
    Language English
    Publishing date 2024-01-26
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1180953-x
    ISSN 1535-4970 ; 0003-0805 ; 1073-449X
    ISSN (online) 1535-4970
    ISSN 0003-0805 ; 1073-449X
    DOI 10.1164/rccm.202308-1490OC
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: In host evolution of beta lactam resistance during active treatment for

    Spottiswoode, Natasha / Hao, Samantha / Sanchez-Guerrero, Estella / Detweiler, Angela M / Mekonen, Honey / Neff, Norma / Macmillan, Henriette / Schwartz, Brian S / Engel, Joanne / DeRisi, Joseph L / Miller, Steven A / Langelier, Charles R

    Frontiers in cellular and infection microbiology

    2023  Volume 13, Page(s) 1241608

    Abstract: Multidrug-resistant (MDR) ...

    Abstract Multidrug-resistant (MDR)
    MeSH term(s) United States ; Humans ; Pseudomonas aeruginosa/genetics ; beta-Lactam Resistance ; Carbapenems ; Sepsis ; Bacteremia/drug therapy
    Chemical Substances Carbapenems
    Language English
    Publishing date 2023-08-30
    Publishing country Switzerland
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 2619676-1
    ISSN 2235-2988 ; 2235-2988
    ISSN (online) 2235-2988
    ISSN 2235-2988
    DOI 10.3389/fcimb.2023.1241608
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Whole-genome sequencing rule-out of suspected hospital-onset

    Chu, Victoria T / Nafees, Saba / Waltari, Eric / McNeil, Nicole / Caughell, Carolyn / Sanchez-Guerrero, Estella / Wang, Lusha / Stanley, Kim / Cunningham, Gail / Wong, Joan / Phelps, Maíra / Tato, Cristina M / Miller, Steve / DeRisi, Joseph L / Yokoe, Deborah S / Ramirez-Avila, Lynn / Langelier, Charles R

    Infection control and hospital epidemiology

    2023  Volume 44, Issue 12, Page(s) 2059–2061

    Abstract: Two independent temporal-spatial clusters of hospital- ... ...

    Abstract Two independent temporal-spatial clusters of hospital-onset
    MeSH term(s) Humans ; Rhizopus/genetics ; Phylogeny ; Genome, Bacterial ; Hospitals ; Disease Outbreaks
    Language English
    Publishing date 2023-06-13
    Publishing country United States
    Document type Journal Article
    ZDB-ID 639378-0
    ISSN 1559-6834 ; 0195-9417 ; 0899-823X
    ISSN (online) 1559-6834
    ISSN 0195-9417 ; 0899-823X
    DOI 10.1017/ice.2023.85
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: A 2-Gene Host Signature for Improved Accuracy of COVID-19 Diagnosis Agnostic to Viral Variants.

    Albright, Jack / Mick, Eran / Sanchez-Guerrero, Estella / Kamm, Jack / Mitchell, Anthea / Detweiler, Angela M / Neff, Norma / Tsitsiklis, Alexandra / Hayakawa Serpa, Paula / Ratnasiri, Kalani / Havlir, Diane / Kistler, Amy / DeRisi, Joseph L / Pisco, Angela Oliveira / Langelier, Charles R

    mSystems

    2022  Volume 8, Issue 1, Page(s) e0067122

    Abstract: The continued emergence of SARS-CoV-2 variants is one of several factors that may cause false-negative viral PCR test results. Such tests are also susceptible to false-positive results due to trace contamination from high viral titer samples. Host immune ...

    Abstract The continued emergence of SARS-CoV-2 variants is one of several factors that may cause false-negative viral PCR test results. Such tests are also susceptible to false-positive results due to trace contamination from high viral titer samples. Host immune response markers provide an orthogonal indication of infection that can mitigate these concerns when combined with direct viral detection. Here, we leverage nasopharyngeal swab RNA-seq data from patients with COVID-19, other viral acute respiratory illnesses, and nonviral conditions (
    MeSH term(s) Humans ; COVID-19/diagnosis ; SARS-CoV-2/genetics ; COVID-19 Testing ; Pandemics ; Sensitivity and Specificity
    Language English
    Publishing date 2022-12-12
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ISSN 2379-5077
    ISSN (online) 2379-5077
    DOI 10.1128/msystems.00671-22
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Extracellular signal-regulated kinase-1 phosphorylates early growth response-1 at serine 26.

    Santiago, Fernando S / Sanchez-Guerrero, Estella / Zhang, Guishui / Zhong, Ling / Raftery, Mark J / Khachigian, Levon M

    Biochemical and biophysical research communications

    2019  Volume 510, Issue 3, Page(s) 345–351

    Abstract: Egr-1, an immediate-early gene product and master regulator was originally described as a phosphoprotein following its discovery in the 1980s. However specific residue(s) phosphorylated in Egr-1 remain elusive. Here we phosphorylated recombinant Egr-1 in  ...

    Abstract Egr-1, an immediate-early gene product and master regulator was originally described as a phosphoprotein following its discovery in the 1980s. However specific residue(s) phosphorylated in Egr-1 remain elusive. Here we phosphorylated recombinant Egr-1 in vitro with ERK1 prior to mass spectrometry, which identified phosphorylation of Ser
    MeSH term(s) Amino Acid Sequence ; Animals ; Antibodies, Monoclonal ; Cells, Cultured ; Early Growth Response Protein 1/chemistry ; Early Growth Response Protein 1/immunology ; Early Growth Response Protein 1/metabolism ; Immunoprecipitation ; Mass Spectrometry ; Mitogen-Activated Protein Kinase 3/metabolism ; Phosphorylation ; Rats ; Sequence Alignment ; Serine/metabolism
    Chemical Substances Antibodies, Monoclonal ; Early Growth Response Protein 1 ; Egr1 protein, mouse ; Egr1 protein, rat ; Serine (452VLY9402) ; Mitogen-Activated Protein Kinase 3 (EC 2.7.11.24)
    Language English
    Publishing date 2019-01-31
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 205723-2
    ISSN 1090-2104 ; 0006-291X ; 0006-291X
    ISSN (online) 1090-2104 ; 0006-291X
    ISSN 0006-291X
    DOI 10.1016/j.bbrc.2019.01.019
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Prolonged silent carriage, genomic virulence potential and transmission between staff and patients characterize a neonatal intensive care unit (NICU) outbreak of methicillin-resistant

    Madera, Sharline / McNeil, Nicole / Serpa, Paula Hayakawa / Kamm, Jack / Pak, Christy / Caughell, Carolyn / Nichols, Amy / Dynerman, David / Li, Lucy M / Sanchez-Guerrero, Estella / Phelps, Maira S / Detweiler, Angela M / Neff, Norma / Reyes, Helen / Miller, Steve A / Yokoe, Deborah S / DeRisi, Joseph L / Ramirez-Avila, Lynn / Langelier, Charles R

    Infection control and hospital epidemiology

    2022  Volume 44, Issue 1, Page(s) 40–46

    Abstract: Background: Methicillin-resistant : Objective: Improving our understanding of MRSA transmission dynamics, especially among high-risk patients, is an infection prevention priority.: Methods: We investigated a cluster of clinical MRSA cases in the ... ...

    Abstract Background: Methicillin-resistant
    Objective: Improving our understanding of MRSA transmission dynamics, especially among high-risk patients, is an infection prevention priority.
    Methods: We investigated a cluster of clinical MRSA cases in the NICU using a combination of epidemiologic review and whole-genome sequencing (WGS) of isolates from clinical and surveillance cultures obtained from patients and healthcare personnel (HCP).
    Results: Phylogenetic analysis identified 2 genetically distinct phylogenetic clades and revealed multiple silent-transmission events between HCP and infants. The predominant outbreak strain harbored multiple virulence factors. Epidemiologic investigation and genomic analysis identified a HCP colonized with the dominant MRSA outbreak strain who cared for most NICU patients who were infected or colonized with the same strain, including 1 NICU patient with severe infection 7 months before the described outbreak. These results guided implementation of infection prevention interventions that prevented further transmission events.
    Conclusions: Silent transmission of MRSA between HCP and NICU patients likely contributed to a NICU outbreak involving a virulent MRSA strain. WGS enabled data-driven decision making to inform implementation of infection control policies that mitigated the outbreak. Prospective WGS coupled with epidemiologic analysis can be used to detect transmission events and prompt early implementation of control strategies.
    MeSH term(s) Infant, Newborn ; Infant ; Humans ; Methicillin-Resistant Staphylococcus aureus/genetics ; Intensive Care Units, Neonatal ; Cross Infection/epidemiology ; Staphylococcal Infections/prevention & control ; Virulence/genetics ; Prospective Studies ; Phylogeny ; Disease Outbreaks/prevention & control ; Infection Control/methods ; Genomics
    Language English
    Publishing date 2022-03-21
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural
    ZDB-ID 639378-0
    ISSN 1559-6834 ; 0195-9417 ; 0899-823X
    ISSN (online) 1559-6834
    ISSN 0195-9417 ; 0899-823X
    DOI 10.1017/ice.2022.48
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: A 2-Gene Host Signature for Improved Accuracy of COVID-19 Diagnosis Agnostic to Viral Variants

    Albright, Jack / Mick, Eran / Sanchez-Guerrero, Estella / Kamm, Jack / Mitchell, Anthea / Detweiler, Angela M / Neff, Norma / Tsitsiklis, Alexandra / Hayakawa Serpa, Paula / Ratnasiri, Kalani / Havlir, Diane / Kistler, Amy / DeRisi, Joseph / Pisco, Angela Oliveira / Langelier, Charles

    medRxiv

    Abstract: The continued emergence of SARS-CoV-2 variants is one of several factors that may cause false negative viral PCR test results. Such tests are also susceptible to false positive results due to trace contamination from high viral titer samples. Host immune ...

    Abstract The continued emergence of SARS-CoV-2 variants is one of several factors that may cause false negative viral PCR test results. Such tests are also susceptible to false positive results due to trace contamination from high viral titer samples. Host immune response markers provide an orthogonal indication of infection that can mitigate these concerns when combined with direct viral detection. Here, we leverage nasopharyngeal swab RNA-seq data from patients with COVID-19, other viral acute respiratory illnesses and non-viral conditions (n=318) to develop support vector machine classifiers that rely on a parsimonious 2-gene host signature to predict COVID-19. Optimal classifiers achieve an area under the receiver operating characteristic curve (AUC) greater than 0.9 when evaluated on an independent RNA-seq cohort (n=553). We show that a classifier relying on a single interferon-stimulated gene, such as IFI6 or IFI44, measured in RT-qPCR assays (n=144) achieves AUC values as high as 0.88. Addition of a second gene, such as GBP5, significantly improves the specificity compared to other respiratory viruses. The performance of a clinically practical 2-gene RT-qPCR classifier is robust across common SARS-CoV-2 variants, including Omicron, and is unaffected by cross-contamination, demonstrating its utility for improving accuracy of COVID-19 diagnostics.
    Keywords covid19
    Language English
    Publishing date 2022-01-07
    Publisher Cold Spring Harbor Laboratory Press
    Document type Article ; Online
    DOI 10.1101/2022.01.06.21268498
    Database COVID19

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  9. Article ; Online: Angiotensin II induction of PDGF-C expression is mediated by AT1 receptor-dependent Egr-1 transactivation.

    Sanchez-Guerrero, Estella / Midgley, Valerie C / Khachigian, Levon M

    Nucleic acids research

    2008  Volume 36, Issue 6, Page(s) 1941–1951

    Abstract: Platelet-derived growth factors are a family of mitogens and chemoattractants comprising of four ligand genes (A-, B-, C-, D-chains) implicated in many physiologic and pathophysiologic processes, including atherosclerosis, fibrosis and tumorigenesis. Our ...

    Abstract Platelet-derived growth factors are a family of mitogens and chemoattractants comprising of four ligand genes (A-, B-, C-, D-chains) implicated in many physiologic and pathophysiologic processes, including atherosclerosis, fibrosis and tumorigenesis. Our understanding of the molecular mechanisms, which regulate PDGF-C transcription remains incomplete. Transient transfection analysis, conventional and quantitative real-time PCR revealed the induction of PDGF-C transcription and mRNA expression in smooth muscle cells (SMCs) exposed to the peptide hormone angiotensin (ATII), which induces Egr-1. Occupancy of a G + C-rich element in the proximal region of the PDGF-C promoter was unaffected by ATII. Instead we discovered, using both nuclear extracts and recombinant proteins with EMSA and ChIP analyses, the existence of a second Egr-1-binding element located 500 bp upstream. ATII induction of PDGF-C transcription is mediated by the angiotensin type 1 receptor (AT1R) and Egr-1 activation through this upstream element. DNAzyme ED5 targeting Egr-1 blocked ATII-inducible PDGF-C expression. Moreover, increased PDGF-C expression after exposure to ATII depends upon the differentiation state of the SMCs. This study demonstrates the existence of this novel ATII-AT1R-Egr-1-PDGF-C axis in SMCs of neonatal origin, but not in adult SMCs, where ATII induces Egr-1 but not PDGF-C.
    MeSH term(s) Angiotensin II/pharmacology ; Animals ; Base Sequence ; Binding Sites ; Cells, Cultured ; Early Growth Response Protein 1/metabolism ; Gene Expression ; Lymphokines/biosynthesis ; Lymphokines/genetics ; Molecular Sequence Data ; Muscle, Smooth, Vascular/cytology ; Muscle, Smooth, Vascular/drug effects ; Muscle, Smooth, Vascular/metabolism ; Platelet-Derived Growth Factor/biosynthesis ; Platelet-Derived Growth Factor/genetics ; Promoter Regions, Genetic ; Rats ; Receptor, Angiotensin, Type 1/metabolism ; Transcriptional Activation
    Chemical Substances Early Growth Response Protein 1 ; Lymphokines ; Platelet-Derived Growth Factor ; Receptor, Angiotensin, Type 1 ; platelet-derived growth factor C ; Angiotensin II (11128-99-7)
    Language English
    Publishing date 2008-02-13
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 186809-3
    ISSN 1362-4962 ; 1362-4954 ; 0301-5610 ; 0305-1048
    ISSN (online) 1362-4962 ; 1362-4954
    ISSN 0301-5610 ; 0305-1048
    DOI 10.1093/nar/gkm923
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  10. Article ; Online: Repression of PDGF-R-α after cellular injury involves TNF-α, formation of a c-Fos-YY1 complex, and negative regulation by HDAC.

    Zhang, Ning / Chan, Cecilia W S / Sanchez-Guerrero, Estella / Khachigian, Levon M

    American journal of physiology. Cell physiology

    2012  Volume 302, Issue 11, Page(s) C1590–8

    Abstract: Wound healing is a complex dynamic process involving a variety of cell types, including fibroblasts that express and respond to cytokines and growth factors in the local microenvironment. The mechanisms controlling gene expression after injury at a ... ...

    Abstract Wound healing is a complex dynamic process involving a variety of cell types, including fibroblasts that express and respond to cytokines and growth factors in the local microenvironment. The mechanisms controlling gene expression after injury at a transcriptional level are poorly understood. Here we show that decreased expression of a key receptor, PDGF-receptor (R)-α, after fibroblast injury is due to the release and paracrine activity of TNF-α. TNF-α inhibits PDGF-R-α expression and this involves formation of a c-Fos-Yin Yang 1 (YY1) complex and histone deacetylase (HDAC) activity. c-Fos, induced by TNF-α, negatively regulates PDGF-R-α transcription. Small interfering RNA (siRNA) targeting c-Fos or the zinc finger transcription factor YY1 inhibits TNF-α suppression of PDGF-R-α expression. Coimmunoprecipitation studies show that TNF-α stimulates the formation of a complex between c-Fos with YY1. Furthermore, chromatin immunoprecipitation (ChIP) analysis reveals the enrichment of c-Fos, YY1, and HDAC-1 at the PDGF-R-α promoter in cells exposed to TNF-α. With suberoylanilide hydroxamic acid (SAHA) and HDAC-1 siRNA, we demonstrate that HDAC mediates TNF-α repression of PDGF-R-α. These findings demonstrate that transcriptional repression of PDGF-R-α after fibroblast injury involves paracrine activity of endogenous TNF-α, the formation of a c-Fos-YY1 complex, and negative regulatory activity by HDAC.
    MeSH term(s) Animals ; Base Sequence ; DNA-Binding Proteins/genetics ; DNA-Binding Proteins/metabolism ; Histone Deacetylases/genetics ; Histone Deacetylases/metabolism ; Hydroxamic Acids/metabolism ; Mice ; Molecular Sequence Data ; NIH 3T3 Cells ; Promoter Regions, Genetic ; Proto-Oncogene Proteins c-fos/genetics ; Proto-Oncogene Proteins c-fos/metabolism ; RNA Interference ; RNA, Small Interfering ; Receptor, Platelet-Derived Growth Factor alpha/biosynthesis ; Receptor, Platelet-Derived Growth Factor alpha/genetics ; Receptor, Platelet-Derived Growth Factor alpha/metabolism ; Regulatory Sequences, Nucleic Acid ; Sequence Analysis, DNA ; Tumor Necrosis Factor-alpha/metabolism ; Vorinostat ; YY1 Transcription Factor/genetics ; YY1 Transcription Factor/metabolism
    Chemical Substances DNA-Binding Proteins ; Hydroxamic Acids ; Proto-Oncogene Proteins c-fos ; RNA, Small Interfering ; Tumor Necrosis Factor-alpha ; YY1 Transcription Factor ; YY1 protein, human ; Vorinostat (58IFB293JI) ; Receptor, Platelet-Derived Growth Factor alpha (EC 2.7.10.1) ; Histone Deacetylases (EC 3.5.1.98)
    Language English
    Publishing date 2012-02-08
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 392098-7
    ISSN 1522-1563 ; 0363-6143
    ISSN (online) 1522-1563
    ISSN 0363-6143
    DOI 10.1152/ajpcell.00429.2011
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