LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 4 of total 4

Search options

  1. Article ; Online: Structural plasticity of axon initial segment in spinal cord neurons underlies inflammatory pain.

    Caspi, Yaki / Mazar, Michael / Kushnir, Yishai / Mazor, Yoav / Katz, Ben / Lev, Shaya / Binshtok, Alexander M

    Pain

    2022  Volume 164, Issue 6, Page(s) 1388–1401

    Abstract: Abstract: Physiological or pathology-mediated changes in neuronal activity trigger structural plasticity of the action potential generation site-the axon initial segment (AIS). These changes affect intrinsic neuronal excitability, thus tuning neuronal ... ...

    Abstract Abstract: Physiological or pathology-mediated changes in neuronal activity trigger structural plasticity of the action potential generation site-the axon initial segment (AIS). These changes affect intrinsic neuronal excitability, thus tuning neuronal and overall network output. Using behavioral, immunohistochemical, electrophysiological, and computational approaches, we characterized inflammation-related AIS plasticity in rat's superficial (lamina II) spinal cord dorsal horn (SDH) neurons and established how AIS plasticity regulates the activity of SDH neurons, thus contributing to pain hypersensitivity. We show that in naive conditions, AIS in SDH inhibitory neurons is located closer to the soma than in excitatory neurons. Shortly after inducing inflammation, when the inflammatory hyperalgesia is at its peak, AIS in inhibitory neurons is shifted distally away from the soma. The shift in AIS location is accompanied by the decrease in excitability of SDH inhibitory neurons. These AIS location and excitability changes are selective for inhibitory neurons and reversible. We show that AIS shift back close to the soma, and SDH inhibitory neurons' excitability increases to baseline levels following recovery from inflammatory hyperalgesia. The computational model of SDH inhibitory neurons predicts that the distal shift of AIS is sufficient to decrease the intrinsic excitability of these neurons. Our results provide evidence of inflammatory pain-mediated AIS plasticity in the central nervous system, which differentially affects the excitability of inhibitory SDH neurons and contributes to inflammatory hyperalgesia.
    MeSH term(s) Animals ; Rats ; Axon Initial Segment/physiology ; Hyperalgesia ; Neurons/physiology ; Pain ; Inflammation ; Spinal Cord ; Neuronal Plasticity/physiology
    Language English
    Publishing date 2022-11-29
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 193153-2
    ISSN 1872-6623 ; 0304-3959
    ISSN (online) 1872-6623
    ISSN 0304-3959
    DOI 10.1097/j.pain.0000000000002829
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    In stock of ZB MED Cologne/Königswinter

    Zs.A 1158: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (1.OG)
    ab Jg. 2022: Lesesaal (EG)

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  2. Article: A true case of wandering pacemaker.

    Oyama, Jared / Mazar, Michael / Bradfield, Jason S

    HeartRhythm case reports

    2015  Volume 1, Issue 4, Page(s) 180–181

    Language English
    Publishing date 2015-06-12
    Publishing country United States
    Document type Case Reports
    ZDB-ID 2834871-0
    ISSN 2214-0271
    ISSN 2214-0271
    DOI 10.1016/j.hrcr.2015.01.020
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  3. Article ; Online: Prevalence of use of cardiovascular drugs in 499 patients with suspected coronary artery disease at time of hospitalization for coronary angiography and in 357 patients with obstructive coronary artery disease documented by coronary angiography.

    Mazar, Michael / Schair, Barry / Aronow, Wilbert S / Khalique, Omar / Lehrman, Stuart G

    American journal of therapeutics

    2008  Volume 15, Issue 5, Page(s) 458–460

    Abstract: In a prospective study of 499 patients with suspected coronary artery disease (CAD) hospitalized for coronary angiography, the prevalence of use of cardiovascular drugs at hospital admission was 80% for antiplatelet drugs, 66% for beta blockers, 55% for ... ...

    Abstract In a prospective study of 499 patients with suspected coronary artery disease (CAD) hospitalized for coronary angiography, the prevalence of use of cardiovascular drugs at hospital admission was 80% for antiplatelet drugs, 66% for beta blockers, 55% for angiotensin-converting enzyme (ACE) inhibitors or angiotensin receptor blockers (ARBs), 65% for lipid-lowering drugs, 24% for calcium channel blockers (CCBs), and 16% for nitrates. In 357 patients with obstructive CAD diagnosed by coronary angiography, the prevalence of use of these drugs at hospital discharge was 100% for antiplatelet drugs, 97% for beta blockers, 91% for ACE inhibitors or ARBs, 98% for lipid-lowering drugs, 17% for CCBs, and 27% for nitrates. Obstructive CAD was significantly more prevalent in men (P < 0.025), in cigarette smokers (P < 0.01), and in patients with hypertension, diabetes, or hypercholesterolemia (P < 0.001). Age, race, body mass index, and neck circumference were not significantly different for patients with versus without obstructive CAD.
    MeSH term(s) Age Factors ; Angiotensin II Type 1 Receptor Blockers/therapeutic use ; Angiotensin-Converting Enzyme Inhibitors/therapeutic use ; Calcium Channel Blockers/therapeutic use ; Cardiovascular Agents/administration & dosage ; Cardiovascular Agents/therapeutic use ; Coronary Angiography ; Coronary Artery Disease/complications ; Coronary Artery Disease/diagnosis ; Coronary Artery Disease/drug therapy ; Coronary Occlusion/complications ; Coronary Occlusion/diagnosis ; Coronary Occlusion/drug therapy ; Diabetes Complications ; Drug Utilization ; Female ; Hospitalization/statistics & numerical data ; Humans ; Hypercholesterolemia/complications ; Hypercholesterolemia/drug therapy ; Hypertension/complications ; Hypertension/drug therapy ; Hypolipidemic Agents/therapeutic use ; Male ; Middle Aged ; Platelet Aggregation Inhibitors/therapeutic use ; Prospective Studies ; Sex Factors ; Smoking
    Chemical Substances Angiotensin II Type 1 Receptor Blockers ; Angiotensin-Converting Enzyme Inhibitors ; Calcium Channel Blockers ; Cardiovascular Agents ; Hypolipidemic Agents ; Platelet Aggregation Inhibitors
    Language English
    Publishing date 2008-09
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1280786-2
    ISSN 1536-3686 ; 1075-2765
    ISSN (online) 1536-3686
    ISSN 1075-2765
    DOI 10.1097/MJT.0b013e318032599a
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    In stock of ZB MED Cologne/Königswinter

    Zs.A 4351: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (2.OG)
    ab Jg. 2022: Lesesaal (EG)

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  4. Article: Relation of moderate or severe reduction in glomerular filtration rate to number of coronary arteries narrowed >50% in patients undergoing coronary angiography for suspected coronary artery disease.

    Khalique, Omar / Aronow, Wilbert S / Ahn, Chul / Mazar, Michael / Schair, Barry / Shao, John / Channamsetty, Venu

    The American journal of cardiology

    2007  Volume 100, Issue 3, Page(s) 415–416

    Abstract: We investigated, in a prospective study of 1,007 patients who underwent coronary angiography for suspected coronary artery disease (CAD), the association of obstructive CAD with severe or moderate decrease in glomerular filtration rate (GFR) calculated ... ...

    Abstract We investigated, in a prospective study of 1,007 patients who underwent coronary angiography for suspected coronary artery disease (CAD), the association of obstructive CAD with severe or moderate decrease in glomerular filtration rate (GFR) calculated from the Modification of Diet in Renal Disease equation. Baseline characteristics were similar in patients with a moderate or severe GFR decrease (<60 ml/min/1.73 m(2)) and those with a mild or no GFR decrease except for diabetes being present in 112 of 259 patients (43%) with a moderate or severe GFR decrease and in 206 of 748 patients (28%) with a mild or no GFR decrease (p <0.001). Three-vessel CAD was present in 138 of 259 patients (53%) with a moderate or severe GFR decrease and in 170 of 748 patients (23%) with a mild or no GFR decrease (p <0.001). One- to 3-vessel CAD was present in 225 of 259 patients (87%) with a moderate or severe GFR decrease and in 533 of 748 patients (71%) with a mild or no decrease in GFR (p <0.001). Logistic regression analysis showed that patients with a moderate or severe GFR decrease had a 4.1 times higher risk of developing 3-vessel CAD after controlling for the effect of diabetes compared with patients with a mild or no GFR decrease (relative risk 4.1, 95% confidence interval 3.0 to 5.5). In conclusion, a moderate or severe decrease in GFR is a significant risk factor for 1- to 3-vessel obstructive CAD, especially 3-vessel obstructive CAD.
    MeSH term(s) Aged ; Coronary Angiography ; Coronary Artery Disease/complications ; Coronary Artery Disease/diagnostic imaging ; Coronary Artery Disease/physiopathology ; Female ; Glomerular Filtration Rate ; Humans ; Male ; Renal Insufficiency, Chronic/complications ; Renal Insufficiency, Chronic/diagnosis
    Language English
    Publishing date 2007-08-01
    Publishing country United States
    Document type Journal Article
    ZDB-ID 80014-4
    ISSN 1879-1913 ; 0002-9149
    ISSN (online) 1879-1913
    ISSN 0002-9149
    DOI 10.1016/j.amjcard.2007.03.038
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    In stock of ZB MED Cologne/Königswinter

    Ui IV Zs.73: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 2021: Bestellungen von Artikeln über das Online-Bestellformular
    ab Jg. 2022: Lesesaal (EG)

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

To top