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  1. Article ; Online: C-Reactive Protein: Marker of risk for post-traumatic stress disorder and its potential for a mechanistic role in trauma response and recovery.

    Friend, Samantha F / Nachnani, Rahul / Powell, Susan B / Risbrough, Victoria B

    The European journal of neuroscience

    2020  Volume 55, Issue 9-10, Page(s) 2297–2310

    Abstract: ... role in trauma disorders. C-reactive protein (CRP) is an innate acute phase reactant produced ...

    Abstract Increasing evidence indicates that inflammation plays a role in PTSD and stress disorder pathophysiology. PTSD is consistently associated with higher circulating inflammatory protein levels. Rodent models demonstrate that inflammation promotes enduring avoidance and arousal behaviors after severe stressors (e.g., predator exposure and social defeat), suggesting that inflammation may play a mechanistic role in trauma disorders. C-reactive protein (CRP) is an innate acute phase reactant produced by the liver after acute infection and chronic disease. A growing number of investigations report associations with PTSD diagnosis and elevated peripheral CRP, CRP gene mutations, and CRP gene expression changes in immune signaling pathways. CRP is reasonably established as a potential marker of PTSD and trauma exposure, but if and how it may play a mechanistic role is unclear. In this review, we discuss the current understanding of immune mechanisms in PTSD with a particular focus on the innate immune signaling factor, CRP. We found that although there is consistent evidence of an association of CRP with PTSD symptoms and risk, there is a paucity of data on how CRP might contribute to CNS inflammation in PTSD, and consequently, PTSD symptoms. We discuss potential mechanisms through which CRP could modulate enduring peripheral and CNS stress responses, along with future areas of investigation probing the role of CRP and other innate immune signaling factors in modulating trauma responses. Overall, we found that CRP likely contributes to central inflammation, but how it does so is an area for further study.
    MeSH term(s) Biomarkers/metabolism ; C-Reactive Protein/metabolism ; Humans ; Inflammation/complications ; Inflammation/metabolism ; Stress Disorders, Post-Traumatic/diagnosis
    Chemical Substances Biomarkers ; C-Reactive Protein (9007-41-4)
    Language English
    Publishing date 2020-11-23
    Publishing country France
    Document type Journal Article ; Review
    ZDB-ID 645180-9
    ISSN 1460-9568 ; 0953-816X
    ISSN (online) 1460-9568
    ISSN 0953-816X
    DOI 10.1111/ejn.15031
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Inducing Mild Traumatic Brain Injury in C. elegans via Cavitation-Free Surface Acoustic Wave-Driven Ultrasonic Irradiation.

    Miansari, Morteza / Mehta, Meghna D / Schilling, Jan M / Kurashina, Yuta / Patel, Hemal H / Friend, James

    Scientific reports

    2019  Volume 9, Issue 1, Page(s) 12775

    Abstract: ... the use of surface acoustic wave (SAW) irradiation of C. elegans worms-without cavitation-as a potential, ethically ...

    Abstract Mild traumatic brain injury is an all-too-common outcome from modern warfare and sport, and lacks a reproducible model for assessment of potential treatments and protection against it. Here we consider the use of surface acoustic wave (SAW) irradiation of C. elegans worms-without cavitation-as a potential, ethically reasonable animal-on-a-chip model for inducing traumatic brain injury in an animal, producing significant effects on memory and learning that could prove useful in a model that progress from youth to old age in but a few weeks. We show a significant effect by SAW on the ability of worms to learn post-exposure through associative learning chemotaxis. At higher SAW intensity, we find immediate, thorough, but temporary paralysis of the worms. We further explore the importance of homogeneous exposure of the worms to the SAW-driven ultrasound, an aspect poorly controlled in past efforts, if at all, and demonstrate the absence of cavitation through a change in fluids from a standard media for the worms to the exceedingly viscous polyvinyl alcohol. Likewise, we demonstrate that acoustic streaming, when present, is not directly responsible for paralysis nor learning disabilities induced in the worm, but is beneficial at low amplitudes to ensuring homogeneous ultrasound exposure.
    MeSH term(s) Animals ; Brain Concussion/metabolism ; Brain Concussion/pathology ; Caenorhabditis elegans/metabolism ; Disease Models, Animal ; Ultrasonic Waves/adverse effects
    Language English
    Publishing date 2019-09-04
    Publishing country England
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, Non-P.H.S.
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-019-47295-1
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Increased T(c) in electrolyte-gated cuprates.

    Dhoot, Anoop Singh / Wimbush, Stuart C / Benseman, Tim / Macmanus-Driscoll, Judith L / Cooper, J R / Friend, Richard Henry

    Advanced materials (Deerfield Beach, Fla.)

    2010  Volume 22, Issue 23, Page(s) 2529–2533

    MeSH term(s) Copper/chemistry ; Electric Impedance ; Lithium Compounds/chemistry ; Perchlorates/chemistry ; Polyethylene Glycols/chemistry ; Transistors, Electronic ; Transition Temperature
    Chemical Substances Lithium Compounds ; Perchlorates ; Polyethylene Glycols (3WJQ0SDW1A) ; Copper (789U1901C5) ; lithium perchlorate (Q86SE98C9C)
    Language English
    Publishing date 2010-05-06
    Publishing country Germany
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1474949-X
    ISSN 1521-4095 ; 0935-9648
    ISSN (online) 1521-4095
    ISSN 0935-9648
    DOI 10.1002/adma.200904024
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: McMurry chemistry on TiO(2)(110): Reductive C=C coupling of benzaldehyde driven by titanium interstitials.

    Benz, Lauren / Haubrich, Jan / Quiller, Ryan G / Jensen, Stephen C / Friend, Cynthia M

    Journal of the American Chemical Society

    2009  Volume 131, Issue 41, Page(s) 15026–15031

    Abstract: Selective reductive coupling of benzaldehyde to stilbene is driven by subsurface Ti interstitials on vacuum-reduced TiO(2)(110). A combination of temperature-programmed reaction spectroscopy and scanning tunneling microscopy (STM) provides chemical and ... ...

    Abstract Selective reductive coupling of benzaldehyde to stilbene is driven by subsurface Ti interstitials on vacuum-reduced TiO(2)(110). A combination of temperature-programmed reaction spectroscopy and scanning tunneling microscopy (STM) provides chemical and structural information which together reveal the dependence of this surface reaction on bulk titanium interstitials. Benzaldehyde reductively couples to stilbene with 100% selectivity and conversions of up to 28% of the adsorbed monolayer in temperature programmed reaction experiments. The activity for coupling was sustained for at least 20 reaction cycles, which indicates that there is a reservoir of Ti interstitials available for reaction and that surface O vacancies alone do not account for the coupling. Reactivity was unchanged after predosing with water so as to fill surface oxygen vacancies, which are not solely responsible for the coupling reaction. The reaction is nearly quenched if O(2) is adsorbed first-a procedure that both fills defects and reacts with Ti interstitials as they migrate to the surface. New titania islands form after reductive coupling of benzaldehyde, based on scanning tunneling microscope images obtained after exposure of TiO(2)(110) to benzaldehyde followed by annealing, providing direct evidence for migration of subsurface Ti interstitials to create reactive sites. The reliance of the benzaldehyde coupling on subsurface defects, and not surface vacancies, over reduced TiO(2)(110), may be general for other reductive processes induced by reducible oxides. The possible role of subsurface, reduced Ti interstitials has broad significance in modeling oxide-based catalysis with reduced crystals.
    Language English
    Publishing date 2009-10-21
    Publishing country United States
    Document type Journal Article
    ZDB-ID 3155-0
    ISSN 1520-5126 ; 0002-7863
    ISSN (online) 1520-5126
    ISSN 0002-7863
    DOI 10.1021/ja905522c
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: MPK-1/ERK regulatory network controls the number of sperm by regulating timing of sperm-oocyte switch in C. elegans germline.

    Yoon, Dong Suk / Alfhili, Mohammad A / Friend, Kyle / Lee, Myon-Hee

    Biochemical and biophysical research communications

    2017  Volume 491, Issue 4, Page(s) 1077–1082

    Abstract: The precise regulation of germline sexual fate is crucial for animal fertility. In C. elegans ... development is tightly controlled by several regulators. In C. elegans hermaphrodites, FBF-1 and FBF-2 (>95 ... of the sperm-oocyte switch in C. elegans. ...

    Abstract The precise regulation of germline sexual fate is crucial for animal fertility. In C. elegans, the production of either type of gamete, sperm or oocyte, becomes mutually exclusive beyond the larval stage. Hermaphrodites initially produce sperm and then switch to produce oocytes. This change of fate during germline development is tightly controlled by several regulators. In C. elegans hermaphrodites, FBF-1 and FBF-2 (>95% identical, members of the Pumilio RNA-binding protein family) proteins function redundantly to promote the sperm-oocyte switch. Here, we demonstrate that loss of LIP-1 (dual specificity phosphatase) in fbf-1(ok91) single mutants leads to excess sperm production due to a delayed sperm-oocyte switch. This phenotype was dramatically rescued by depletion of MPK-1 (an ERK homolog). In contrast, loss of LIP-1 in fbf-2(q738) single mutants leads to a premature sperm-oocyte switch and loss of sperm. Notably, fbf-1 fbf-2; lip-1 triple mutants produce excess sperm. These results suggest that the MPK-1/ERK regulatory network, including FBF-1, FBF-2, and LIP-1, controls the number of sperm by regulating the timing of the sperm-oocyte switch in C. elegans.
    MeSH term(s) Animals ; Caenorhabditis elegans/cytology ; Caenorhabditis elegans/metabolism ; Caenorhabditis elegans Proteins/metabolism ; Fungal Proteins/metabolism ; Germ Cells/metabolism ; Male ; Mitogen-Activated Protein Kinase 1/metabolism ; Mitogen-Activated Protein Kinase 3/metabolism ; Oocytes/metabolism ; Sperm Count ; Spermatozoa/metabolism ; Time Factors
    Chemical Substances Caenorhabditis elegans Proteins ; Fungal Proteins ; CEK1 protein, Candida albicans (148971-42-0) ; Mitogen-Activated Protein Kinase 1 (EC 2.7.11.24) ; Mitogen-Activated Protein Kinase 3 (EC 2.7.11.24) ; mpk-1 protein, C elegans (EC 2.7.11.24)
    Language English
    Publishing date 2017-08-03
    Publishing country United States
    Document type Journal Article
    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.2017.08.014
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article: Protective action of vitamins C and P against dichlorophenarsine hydrochloride.

    FRIEND, F J / IVY, A C

    Proceedings of the Society for Experimental Biology and Medicine. Society for Experimental Biology and Medicine (New York, N.Y.)

    2008  Volume 67, Issue 3, Page(s) 374–376

    MeSH term(s) Anti-Infective Agents ; Arsenic ; Arsenicals ; Ascorbic Acid ; Vitamins
    Chemical Substances Anti-Infective Agents ; Arsenicals ; Vitamins ; Arsenic (N712M78A8G) ; Ascorbic Acid (PQ6CK8PD0R)
    Language English
    Publishing date 2008-10-15
    Publishing country United States
    Document type Journal Article
    ZDB-ID 4015-0
    ISSN 1535-3699 ; 1525-1373 ; 0037-9727
    ISSN (online) 1535-3699 ; 1525-1373
    ISSN 0037-9727
    DOI 10.3181/00379727-67-16311
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Inducing Mild Traumatic Brain Injury in C. elegans via Cavitation-Free Surface Acoustic Wave-Driven Ultrasonic Irradiation

    Morteza Miansari / Meghna D. Mehta / Jan M. Schilling / Yuta Kurashina / Hemal H. Patel / James Friend

    Scientific Reports, Vol 9, Iss 1, Pp 1-

    2019  Volume 11

    Abstract: ... we consider the use of surface acoustic wave (SAW) irradiation of C. elegans worms—without cavitation ...

    Abstract Abstract Mild traumatic brain injury is an all-too-common outcome from modern warfare and sport, and lacks a reproducible model for assessment of potential treatments and protection against it. Here we consider the use of surface acoustic wave (SAW) irradiation of C. elegans worms—without cavitation—as a potential, ethically reasonable animal-on-a-chip model for inducing traumatic brain injury in an animal, producing significant effects on memory and learning that could prove useful in a model that progress from youth to old age in but a few weeks. We show a significant effect by SAW on the ability of worms to learn post-exposure through associative learning chemotaxis. At higher SAW intensity, we find immediate, thorough, but temporary paralysis of the worms. We further explore the importance of homogeneous exposure of the worms to the SAW-driven ultrasound, an aspect poorly controlled in past efforts, if at all, and demonstrate the absence of cavitation through a change in fluids from a standard media for the worms to the exceedingly viscous polyvinyl alcohol. Likewise, we demonstrate that acoustic streaming, when present, is not directly responsible for paralysis nor learning disabilities induced in the worm, but is beneficial at low amplitudes to ensuring homogeneous ultrasound exposure.
    Keywords Medicine ; R ; Science ; Q
    Subject code 616
    Language English
    Publishing date 2019-09-01T00:00:00Z
    Publisher Nature Publishing Group
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  8. Article ; Online: Anatomy of the Photochemical Reaction: Excited-State Dynamics Reveals the C-H Acidity Mechanism of Methoxy Photo-oxidation on Titania.

    Kolesov, Grigory / Vinichenko, Dmitry / Tritsaris, Georgios A / Friend, Cynthia M / Kaxiras, Efthimios

    The journal of physical chemistry letters

    2015  Volume 6, Issue 9, Page(s) 1624–1627

    Abstract: ... directly derived from the "hole" wave functions that lead to the concept of "photoinduced C-H acidity ...

    Abstract Light-driven chemical reactions on semiconductor surfaces have potential for addressing energy and pollution needs through efficient chemical synthesis; however, little is known about the time evolution of excited states that determine reaction pathways. Here, we study the photo-oxidation of methoxy (CH3O) derived from methanol on the rutile TiO2(110) surface using ab initio simulations to create a molecular movie of the process. The movie sequence reveals a wealth of information on the reaction intermediates, time scales, and energetics. The reaction is broken in three stages, described by Lewis structures directly derived from the "hole" wave functions that lead to the concept of "photoinduced C-H acidity". The insights gained from this work can be generalized to a set of simple rules that can predict the efficiency of photo-oxidation reactions in reactant-catalyst pairs.
    Language English
    Publishing date 2015-05-07
    Publishing country United States
    Document type Journal Article
    ISSN 1948-7185
    ISSN (online) 1948-7185
    DOI 10.1021/acs.jpclett.5b00429
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  9. Article: MPK-1/ERK regulatory network controls the number of sperm by regulating timing of sperm-oocyte switch in C. elegans germline

    Yoon, Dong Suk / Kyle Friend / Mohammad A. Alfhili / Myon-Hee Lee

    Biochemical and biophysical research communications. 2017,

    2017  

    Abstract: The precise regulation of germline sexual fate is crucial for animal fertility. In C. elegans ... development is tightly controlled by several regulators. In C. elegans hermaphrodites, FBF-1 and FBF-2 (>95 ... of the sperm-oocyte switch in C. elegans. ...

    Abstract The precise regulation of germline sexual fate is crucial for animal fertility. In C. elegans, the production of either type of gamete, sperm or oocyte, becomes mutually exclusive beyond the larval stage. Hermaphrodites initially produce sperm and then switch to produce oocytes. This change of fate during germline development is tightly controlled by several regulators. In C. elegans hermaphrodites, FBF-1 and FBF-2 (>95% identical, members of the Pumilio RNA-binding protein family) proteins function redundantly to promote the sperm-oocyte switch. Here, we demonstrate that loss of LIP-1 (dual specificity phosphatase) in fbf-1(ok91) single mutants leads to excess sperm production due to a delayed sperm-oocyte switch. This phenotype was dramatically rescued by depletion of MPK-1 (an ERK homolog). In contrast, loss of LIP-1 in fbf-2(q738) single mutants leads to a premature sperm-oocyte switch and loss of sperm. Notably, fbf-1 fbf-2; lip-1 triple mutants produce excess sperm. These results suggest that the MPK-1/ERK regulatory network, including FBF-1, FBF-2, and LIP-1, controls the number of sperm by regulating the timing of the sperm-oocyte switch in C. elegans.
    Keywords animal fertility ; hermaphroditism ; larvae ; mitogen-activated protein kinase ; mutants ; oocytes ; phenotype ; RNA-binding proteins ; spermatozoa
    Language English
    Size p. .
    Publishing place Elsevier Inc.
    Document type Article
    Note Pre-press version
    ZDB-ID 205723-2
    ISSN 0006-291X ; 0006-291X
    ISSN (online) 0006-291X
    ISSN 0006-291X
    DOI 10.1016/j.bbrc.2017.08.014
    Database NAL-Catalogue (AGRICOLA)

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  10. Article ; Online: c-Abl and Arg are activated in human primary melanomas, promote melanoma cell invasion via distinct pathways, and drive metastatic progression.

    Ganguly, S S / Fiore, L S / Sims, J T / Friend, J W / Srinivasan, D / Thacker, M A / Cibull, M L / Wang, C / Novak, M / Kaetzel, D M / Plattner, R

    Oncogene

    2011  Volume 31, Issue 14, Page(s) 1804–1816

    Abstract: ... need to develop new therapies. Here, we found a previously unrecognized role for c-Abl and Arg ... in melanoma progression. We demonstrate that the kinase activities of c-Abl and Arg are elevated in primary ... pharmacological approaches, we show that c-Abl/Arg activation is functionally relevant because it is requiredfor ...

    Abstract Despite 35 years of clinical trials, there is little improvement in 1-year survival rates for patients with metastatic melanoma, and the disease is essentially untreatable if not cured surgically. The paucity of chemotherapeutic agents that are effective for treating metastatic melanoma indicates a dire need to develop new therapies. Here, we found a previously unrecognized role for c-Abl and Arg in melanoma progression. We demonstrate that the kinase activities of c-Abl and Arg are elevated in primary melanomas (60%), in a subset of benign nevi (33%) and in some human melanoma cell lines. Using siRNA and pharmacological approaches, we show that c-Abl/Arg activation is functionally relevant because it is requiredfor melanoma cell proliferation, survival and invasion. Significantly, we identify the mechanism by which activated c-Abl promotes melanoma invasion by showing that it transcriptionally upregulates matrix metalloproteinase-1 (MMP-1), and using rescue approaches we demonstrate that c-Abl promotes invasion through a STAT3 → MMP-1 pathway. Additionally, we show that c-Abl and Arg are not merely redundant, as active Arg drives invasion in a STAT3-independent manner, and upregulates MMP-3 and MT1-MMP, in addition to MMP-1. Most importantly, c-Abl and Arg not only promote in vitro processes important for melanoma progression, but also promote metastasis in vivo, as inhibition of c-Abl/Arg kinase activity with the c-Abl/Arg inhibitor, nilotinib, dramatically inhibits metastasis in a mouse model. Taken together, these data identify c-Abl and Arg as critical, novel, drug targets in metastatic melanoma, and indicate that nilotinib may be useful in preventing metastasis in patients with melanomas harboring active c-Abl and Arg.
    MeSH term(s) Animals ; Disease Progression ; Humans ; Matrix Metalloproteinase 1/metabolism ; Melanoma/metabolism ; Melanoma/pathology ; Melanoma/secondary ; Mice ; Neoplasm Invasiveness ; Protein-Tyrosine Kinases/metabolism ; Protein-Tyrosine Kinases/pharmacology ; Proto-Oncogene Proteins c-abl/metabolism ; Pyrimidines/pharmacology ; STAT3 Transcription Factor/metabolism ; Signal Transduction ; Skin Neoplasms/metabolism ; Skin Neoplasms/pathology
    Chemical Substances Pyrimidines ; STAT3 Transcription Factor ; ARG tyrosine kinase (EC 2.7.1.-) ; Protein-Tyrosine Kinases (EC 2.7.10.1) ; Proto-Oncogene Proteins c-abl (EC 2.7.10.2) ; Matrix Metalloproteinase 1 (EC 3.4.24.7) ; nilotinib (F41401512X)
    Language English
    Publishing date 2011-09-05
    Publishing country England
    Document type Journal Article ; Research Support, N.I.H., Extramural
    ZDB-ID 639046-8
    ISSN 1476-5594 ; 0950-9232
    ISSN (online) 1476-5594
    ISSN 0950-9232
    DOI 10.1038/onc.2011.361
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