LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 492

Search options

  1. Book: C of E

    Furlong, Monica

    the state it's in

    2000  

    Author's details Monica Furlong
    Language English
    Size XIII, 418 p., [8] p. of plates, ill, 24 cm
    Publisher Hodder & Stoughton
    Publishing place London u.a.
    Document type Book
    ISBN 0340693991 ; 9780340693995
    Database Former special subject collection: coastal and deep sea fishing

    More links

    Kategorien

  2. Article: Expression of apolipoprotein E inhibits aggregation of the C-terminal fragments of beta-amyloid precursor protein.

    Ohman, T / Dang, N / LeBoeuf, R C / Furlong, C E / Fukuchi, K

    Neuroscience letters

    1996  Volume 210, Issue 1, Page(s) 65–68

    Abstract: ... and one of the allelic variants (APOE4) of apolipoprotein E. Overexpression of a C-terminal region ... This COS cell culture system was used to study effects of apolipoprotein E on aggregation of the C-terminal ... fragments. When both apolipoprotein E and the C-terminal fragments were overexpressed in COS cells ...

    Abstract An important role of apolipoprotein E in the amyloidogenesis of Alzheimer's disease is suggested by an accumulation of apolipoprotein E in beta-amyloid plaques and a genetic association between Alzheimer's disease and one of the allelic variants (APOE4) of apolipoprotein E. Overexpression of a C-terminal region of beta-amyloid precursor protein brings about aggregation of the C-terminal fragments in COS cells. This COS cell culture system was used to study effects of apolipoprotein E on aggregation of the C-terminal fragments. When both apolipoprotein E and the C-terminal fragments were overexpressed in COS cells, Western blot analyses revealed significant inhibition of aggregation of the C-terminal fragments. No significant differences between apolipoprotein E3 and E4 in the inhibitory activities were found by this method. Apolipoprotein E may inhibit formation of amyloid fibrils.
    MeSH term(s) Alzheimer Disease/metabolism ; Amyloid beta-Protein Precursor/metabolism ; Amyloidosis ; Animals ; Apolipoprotein E3 ; Apolipoprotein E4 ; Apolipoproteins E/biosynthesis ; Apolipoproteins E/metabolism ; Blotting, Western ; COS Cells/chemistry ; COS Cells/metabolism ; DNA, Complementary/physiology ; Peptide Fragments/metabolism ; Transfection
    Chemical Substances Amyloid beta-Protein Precursor ; Apolipoprotein E3 ; Apolipoprotein E4 ; Apolipoproteins E ; DNA, Complementary ; Peptide Fragments
    Language English
    Publishing date 1996-05-24
    Publishing country Ireland
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, P.H.S.
    ZDB-ID 194929-9
    ISSN 1872-7972 ; 0304-3940
    ISSN (online) 1872-7972
    ISSN 0304-3940
    DOI 10.1016/0304-3940(96)12663-x
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  3. Article ; Online: Vitamin C and E intake is associated with increased paraoxonase activity.

    Jarvik, Gail P / Tsai, Nancey Trevanian / McKinstry, Laura A / Wani, Roohi / Brophy, Victoria H / Richter, Rebecca J / Schellenberg, Gerard D / Heagerty, Patrick J / Hatsukami, Thomas S / Furlong, Clement E

    Arteriosclerosis, thrombosis, and vascular biology

    2002  Volume 22, Issue 8, Page(s) 1329–1333

    Abstract: ... a predictor of vascular disease. Vitamins C and E, dietary antioxidants, scavenge free-oxygen radical products ... that may depress PON1 activity. Therefore, we evaluated the relationship between dietary vitamin C and E intake and ... PON1 activity.: Methods and results: The vitamin C and E intakes of male white subjects (n=189) were ...

    Abstract Objective: Paraoxonase (PON1), an esterase physically associated with high density lipoprotein, has been shown to inhibit atherogenic low density lipoprotein and high density lipoprotein oxidation. PON1 activity appears to be primarily under genetic control with some environmental modification and is a predictor of vascular disease. Vitamins C and E, dietary antioxidants, scavenge free-oxygen radical products that may depress PON1 activity. Therefore, we evaluated the relationship between dietary vitamin C and E intake and PON1 activity.
    Methods and results: The vitamin C and E intakes of male white subjects (n=189) were estimated by using a standardized food frequency survey. With covariates, vitamin C or E intakes were found to be significant positive predictors of PON1 activity for the hydrolysis of paraoxon and diazoxon with the use of linear regression. Smoking and use of statins were independent predictors of PON1 activity.
    Conclusions: PON1 activity, which is primarily genotype dependent, varies with antioxidant vitamins, cigarette smoking, and statin drug use. Because PON1 activity is a better predictor of vascular disease than is the currently described genetic variation in PON1, further studies of the environmental influences on PON1 activity and additional PON1 genetic variants are warranted.
    MeSH term(s) Aged ; Aged, 80 and over ; Arteriosclerosis/metabolism ; Arteriosclerosis/prevention & control ; Aryldialkylphosphatase ; Ascorbic Acid/administration & dosage ; Cholesterol, HDL/metabolism ; Cholesterol, LDL/metabolism ; Diet ; Esterases/genetics ; Esterases/metabolism ; Genotype ; Humans ; Hypolipidemic Agents/therapeutic use ; Lipid Peroxidation ; Male ; Middle Aged ; Smoking/adverse effects ; Vitamin E/administration & dosage
    Chemical Substances Cholesterol, HDL ; Cholesterol, LDL ; Hypolipidemic Agents ; Vitamin E (1406-18-4) ; Esterases (EC 3.1.-) ; Aryldialkylphosphatase (EC 3.1.8.1) ; PON1 protein, human (EC 3.1.8.1) ; Ascorbic Acid (PQ6CK8PD0R)
    Language English
    Publishing date 2002-10-01
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, Non-P.H.S. ; Research Support, U.S. Gov't, P.H.S.
    ZDB-ID 1221433-4
    ISSN 1524-4636 ; 1079-5642
    ISSN (online) 1524-4636
    ISSN 1079-5642
    DOI 10.1161/01.atv.0000027101.40323.3a
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  4. Article ; Online: Enhancer-promoter interactions become more instructive in the transition from cell-fate specification to tissue differentiation.

    Pollex, Tim / Rabinowitz, Adam / Gambetta, Maria Cristina / Marco-Ferreres, Raquel / Viales, Rebecca R / Jankowski, Aleksander / Schaub, Christoph / Furlong, Eileen E M

    Nature genetics

    2024  Volume 56, Issue 4, Page(s) 686–696

    Abstract: ... However, the relationship between the timing of enhancer-promoter (E-P) proximity and activity remains unclear ... characterized enhancers or promoters with tissue-specific activity in Drosophila embryos and performed Capture-C ... This enabled direct comparison between E-P proximity and activity transitioning from OFF-to-ON and ON-to-OFF ...

    Abstract To regulate expression, enhancers must come in proximity to their target gene. However, the relationship between the timing of enhancer-promoter (E-P) proximity and activity remains unclear, with examples of uncoupled, anticorrelated and correlated interactions. To assess this, we selected 600 characterized enhancers or promoters with tissue-specific activity in Drosophila embryos and performed Capture-C in FACS-purified myogenic or neurogenic cells during specification and tissue differentiation. This enabled direct comparison between E-P proximity and activity transitioning from OFF-to-ON and ON-to-OFF states across developmental conditions. This showed remarkably similar E-P topologies between specified muscle and neuronal cells, which are uncoupled from activity. During tissue differentiation, many new distal interactions emerge where changes in E-P proximity reflect changes in activity. The mode of E-P regulation therefore appears to change as embryogenesis proceeds, from largely permissive topologies during cell-fate specification to more instructive regulation during terminal tissue differentiation, when E-P proximity is coupled to activation.
    MeSH term(s) Animals ; Enhancer Elements, Genetic/genetics ; Gene Expression Regulation, Developmental/genetics ; Promoter Regions, Genetic/genetics ; Drosophila/genetics ; Cell Differentiation/genetics
    Language English
    Publishing date 2024-03-11
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1108734-1
    ISSN 1546-1718 ; 1061-4036
    ISSN (online) 1546-1718
    ISSN 1061-4036
    DOI 10.1038/s41588-024-01678-x
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  5. Article ; Online: Structural basis of directional switching by the bacterial flagellum.

    Johnson, Steven / Deme, Justin C / Furlong, Emily J / Caesar, Joseph J E / Chevance, Fabienne F V / Hughes, Kelly T / Lea, Susan M

    Nature microbiology

    2024  

    Abstract: ... 2-5.5 Å), including the cytoplasmic C-ring complexes required for power transmission ... in both counter-clockwise and clockwise rotational conformations. These reveal 180° movements of both the N- and C ...

    Abstract The bacterial flagellum is a macromolecular protein complex that harvests energy from uni-directional ion flow across the inner membrane to power bacterial swimming via rotation of the flagellar filament. Rotation is bi-directional, with binding of a cytoplasmic chemotactic response regulator controlling reversal, though the structural and mechanistic bases for rotational switching are not well understood. Here we present cryoelectron microscopy structures of intact Salmonella flagellar basal bodies (3.2-5.5 Å), including the cytoplasmic C-ring complexes required for power transmission, in both counter-clockwise and clockwise rotational conformations. These reveal 180° movements of both the N- and C-terminal domains of the FliG protein, which, when combined with a high-resolution cryoelectron microscopy structure of the MotA
    Language English
    Publishing date 2024-03-08
    Publishing country England
    Document type Journal Article
    ISSN 2058-5276
    ISSN (online) 2058-5276
    DOI 10.1038/s41564-024-01630-z
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  6. Article ; Online: Association of Air Pollution and Physical Activity With Brain Volumes.

    Furlong, Melissa A / Alexander, Gene E / Klimentidis, Yann C / Raichlen, David A

    Neurology

    2022  Volume 98, Issue 4, Page(s) e416–e426

    Abstract: Background and objectives: In high-pollution areas, physical activity may have a paradoxical effect on brain health by increasing particulate deposition in the lungs. We examined whether physical activity modifies associations of air pollution (AP) with ...

    Abstract Background and objectives: In high-pollution areas, physical activity may have a paradoxical effect on brain health by increasing particulate deposition in the lungs. We examined whether physical activity modifies associations of air pollution (AP) with brain volumes in an epidemiologic framework.
    Methods: The UK Biobank enrolled >500,000 adult participants from 2006 to 2010. Wrist accelerometers, multimodal MRI with T1 images and T2 fluid-attenuated inversion recovery data, and land use regression were used to estimate vigorous physical activity (VigPA), structural brain volumes, and AP, respectively, in subsets of the full sample. We evaluated associations among AP interquartile ranges, VigPA, and brain structure volumes and assessed interactions between AP and VigPA.
    Results: Eight thousand six hundred participants were included, with an average age of 55.55 (SD 7.46) years. After correction for multiple testing, in overall models, VigPA was positively associated with gray matter volume (GMV) and negatively associated with white matter hyperintensity volume (WMHV), while NO
    Language English
    Publishing date 2022-01-24
    Publishing country United States
    Document type Journal Article
    ZDB-ID 207147-2
    ISSN 1526-632X ; 0028-3878
    ISSN (online) 1526-632X
    ISSN 0028-3878
    DOI 10.1212/WNL.0000000000013031
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  7. Article ; Online: Somatosensory and motor representations following bilateral transplants of the hands: A 6-year longitudinal case report on the first pediatric bilateral hand transplant patient.

    Gaetz, W / Dockstader, C / Furlong, P L / Amaral, S / Vossough, A / Schwartz, E S / Roberts, T P L / Scott Levin, L

    Brain research

    2023  Volume 1804, Page(s) 148262

    Abstract: ... observed to be significantly larger and more phasic (i.e., smoother) than controls. Subsequent measures ...

    Abstract A vascularized composite tissue allotransplantation (VCA) was performed at the Children's Hospital of Philadelphia (CHOP), on an 8-year-old patient in 2015, six years after bilateral hand and foot amputation. Hand VCA resulted in reafferentation of the medial, ulnar, and radial nerves serving hand somatosensation and motor function. We used magnetoencephalography (MEG) to assess somatosensory cortical plasticity following the post-transplantation recovery of the peripheral sensory nerves of the hands. Our 2-year postoperative MEG showed that somatosensory lip representations, initially observed at "hand areas", reverted to canonical, orthotopic lip locations with recovery of post-transplant hand function. Here, we continue the assessment of motor and somatosensory responses up to 6-years post-transplant. Magnetoencephalographic somatosensory responses were recorded eight times over a six-year period following hand transplantation, using a 275-channel MEG system. Somatosensory tactile stimuli were presented to the right lower lip (all 8 visits) as well as right and left index fingers (visits 3-8) and fifth digits (visits 4-8). In addition, left and right-hand motor responses were also recorded for left index finger and right thumb (visit 8 only).During the acute recovery phase (visits 3 and 4), somatosensory responses of the digits were observed to be significantly larger and more phasic (i.e., smoother) than controls. Subsequent measures showed that digit responses maintain this atypical response profile (evoked-response magnitudes typically exceed 1 picoTesla). Orthotopic somatosensory localization of the lip, D2, and D5 was preserved. Motor beta-band desynchrony was age-typical in localization and response magnitude; however, the motor gamma-band response was significantly larger than that observed in a reference population.These novel findings show that the restoration of somatosensory input of the hands resulted in persistent and atypically large cortical responses to digit stimulation, which remain atypically large at 6 years post-transplant; there is no known perceptual correlate, and no reports of phantom pain. Normal somatosensory organization of the lip, D2, and D5 representation remain stable following post-recovery reorganization of the lip's somatosensory response.
    MeSH term(s) Humans ; Child ; Neuronal Plasticity/physiology ; Hand Transplantation ; Somatosensory Cortex/physiology ; Hand/physiology ; Fingers/physiology ; Magnetoencephalography ; Brain Mapping
    Language English
    Publishing date 2023-01-24
    Publishing country Netherlands
    Document type Case Reports ; Journal Article
    ZDB-ID 1200-2
    ISSN 1872-6240 ; 0006-8993
    ISSN (online) 1872-6240
    ISSN 0006-8993
    DOI 10.1016/j.brainres.2023.148262
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  8. Article ; Online: Exposure to air pollution and risk of incident dementia in the UK Biobank.

    Parra, Kimberly L / Alexander, Gene E / Raichlen, David A / Klimentidis, Yann C / Furlong, Melissa A

    Environmental research

    2022  Volume 209, Page(s) 112895

    Abstract: ... to neurodegenerative disease. The association between air pollution and dementia, and modification by apolipoprotein E genotype ...

    Abstract Background: Air pollution may cause inflammatory and oxidative stress damage to the brain, leading to neurodegenerative disease. The association between air pollution and dementia, and modification by apolipoprotein E genotype 4 (APOE-ε4) has yet to be fully investigated.
    Objectives: To examine associations of air pollution with three types of incident dementias (Alzheimer's disease (AD), frontotemporal dementia (FTD), and vascular dementia (VAD)), and their potential modification by APOE-ε4 genotype.
    Methods: The UK Biobank enrolled >500,000 participants (2006-2010) with ongoing follow-up. We used annual averages of air pollution (PM
    Results: Our sample included 187,194 individuals (including N = 680 AD, N = 377 VAD, N = 63 FTD) with a mean follow-up of 7.04 years. We observed consistent associations of PM
    Discussion: PM
    MeSH term(s) Air Pollutants/analysis ; Air Pollutants/toxicity ; Air Pollution/adverse effects ; Air Pollution/analysis ; Alzheimer Disease ; Biological Specimen Banks ; Environmental Exposure/adverse effects ; Environmental Exposure/analysis ; Humans ; Middle Aged ; Neurodegenerative Diseases ; Particulate Matter/analysis ; Particulate Matter/toxicity ; United Kingdom/epidemiology
    Chemical Substances Air Pollutants ; Particulate Matter
    Language English
    Publishing date 2022-02-08
    Publishing country Netherlands
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, N.I.H., Extramural
    ZDB-ID 205699-9
    ISSN 1096-0953 ; 0013-9351
    ISSN (online) 1096-0953
    ISSN 0013-9351
    DOI 10.1016/j.envres.2022.112895
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  9. Article ; Online: Building research capacity and culture: Exploring nurses' experience of implementing a nurse-led clinical trial.

    O'Brien, Catherine / Furlong, Eileen / Coughlan, Barbara / Fox, Patricia / Darley, Andrew

    Journal of nursing management

    2022  Volume 30, Issue 4, Page(s) 1002–1010

    Abstract: Aim: To explore the experiences of a nursing team who implemented an international nurse-led clinical trial in practice and understand the facilitators to their involvement.: Background: The role and responsibilities of the clinical nurse are ... ...

    Abstract Aim: To explore the experiences of a nursing team who implemented an international nurse-led clinical trial in practice and understand the facilitators to their involvement.
    Background: The role and responsibilities of the clinical nurse are advancing to encompass research activity to help inform evidence-based practice. However, several personal and organisational challenges can inhibit nurses' capacity to implement and undertake research within clinical practice.
    Methods: Three focus groups were conducted with members of a nursing team (N = 18). Thematic analysis was employed, and themes were identified and agreed upon by the research team.
    Results: Five themes were identified: 'Previous experience of and attitudes to participation in clinical research', 'Decision-making regarding participation in the clinical trial', 'Facilitators of participation in the clinical trial', 'Challenges of research in nursing practice' and 'Future orientation towards research'.
    Conclusion: Through their experiences of implementing a nurse-led clinical trial within practice, nurses recognized a number of facilitators and challenges to their participation. The perceived relevance of the clinical trial to the nurses' practice, potential to improve patient care and appreciation of the nurse leader's expertise and understanding of their context were key motivators. Reciprocal trust with the nurse leader who was encouraging, motivating, supportive and accessible resulted in the engagement and commitment of the nursing team.
    Implications for nursing management: This paper offers a perspective that can inform senior nursing management teams when implementing and conducting evidence-based research amongst nursing teams and in doing so meet the needs of developing research capacity amongst clinical nurses.
    MeSH term(s) Clinical Trials as Topic ; Focus Groups ; Humans ; Nurse's Role ; Nurses, International ; Nursing, Team ; Qualitative Research
    Language English
    Publishing date 2022-03-15
    Publishing country England
    Document type Journal Article
    ZDB-ID 1162321-4
    ISSN 1365-2834 ; 0966-0429
    ISSN (online) 1365-2834
    ISSN 0966-0429
    DOI 10.1111/jonm.13576
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  10. Article ; Online: Targeted design of synthetic enhancers for selected tissues in the Drosophila embryo.

    de Almeida, Bernardo P / Schaub, Christoph / Pagani, Michaela / Secchia, Stefano / Furlong, Eileen E M / Stark, Alexander

    Nature

    2023  Volume 626, Issue 7997, Page(s) 207–211

    Abstract: Enhancers control gene expression and have crucial roles in development and ... ...

    Abstract Enhancers control gene expression and have crucial roles in development and homeostasis
    MeSH term(s) Animals ; Chromatin/genetics ; Chromatin/metabolism ; Datasets as Topic ; Deep Learning ; Drosophila melanogaster/embryology ; Drosophila melanogaster/genetics ; Embryo, Nonmammalian/embryology ; Embryo, Nonmammalian/metabolism ; Enhancer Elements, Genetic/genetics ; Neural Networks, Computer ; Organ Specificity/genetics ; Reproducibility of Results ; Single-Cell Analysis ; Transposases/metabolism ; Synthetic Biology/methods
    Chemical Substances Chromatin ; Transposases (EC 2.7.7.-)
    Language English
    Publishing date 2023-12-12
    Publishing country England
    Document type Journal Article
    ZDB-ID 120714-3
    ISSN 1476-4687 ; 0028-0836
    ISSN (online) 1476-4687
    ISSN 0028-0836
    DOI 10.1038/s41586-023-06905-9
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

To top