نتایج جستجو برای: contractile functions

تعداد نتایج: 511361  

Journal: :mathematics interdisciplinary research 0
mohammad taati payame noor university sirous moradi arak university shahram najafzadeh payame noor university

in this paper, we consider a new class of analytic functions in the unit disk using polynomials of order alpha. we give some sufficient conditions for functions belonging to this class.

Journal: :Sheng li xue bao : [Acta physiologica Sinica] 2004
Hua-Chen Zhao Dong-Mei Wu Xiang-Li Cui Bo-Wei Wu

To study the inotropic effect of enhanced Na(+)-Ca(2+) exchange in the rat papillary muscles and isolated heart, the developed tension in the rat papillary muscles was measured and the left ventricular functions were assessed in the isolated rat heart. E-4031, a selective activator for Na(+)-Ca(2+) exchange in rats, concentration-dependently increased the developed contractile tension in the ra...

2000
HIROSHI ENDOH TAKAHO KANEKO HIRO NAKAMURA KATSUHIKO DOI EIJI TAKAHASHI Takaho Kaneko Hiro Nakamura Katsuhiko Doi

Endoh, Hiroshi, Takaho Kaneko, Hiro Nakamura, Katsuhiko Doi, and Eiji Takahashi. Improved cardiac contractile functions in hypoxia-reoxygenation in rats treated with low concentration Co. Am J Physiol Heart Circ Physiol 279: H2713–H2719, 2000.—An intracellular mechanism that senses decreases in tissue oxygen level and stimulates hypoxia-related gene expression has been reported in various cell ...

Journal: :The Journal of Cell Biology 2001
Craig A. Mandato William M. Bement

Xenopus oocytes assemble an array of F-actin and myosin 2 around plasma membrane wounds. We analyzed this process in living oocytes using confocal time-lapse (four-dimensional) microscopy. Closure of wounds requires assembly and contraction of a classic "contractile ring" composed of F-actin and myosin 2. However, this ring works in concert with a 5-10-microm wide "zone" of localized actin and ...

Journal: :Development 2005
Amy Shaub Maddox Bianca Habermann Arshad Desai Karen Oegema

Anillins are conserved proteins that are important for stabilizing and remodeling the actin cytoskeleton. Anillins have been implicated in cytokinesis in several systems and in cellularization of the syncytial Drosophila embryo. Here, we examine the functions of three C. elegans proteins with homology to anillin (ANI-1, ANI-2 and ANI-3). We show that ANI-1 and ANI-2 contribute to embryonic viab...

Journal: :Current Biology 2014
Jordan R. Beach Lin Shao Kirsten Remmert Dong Li Eric Betzig John A. Hammer

Nonmuscle myosin II (NM II) powers myriad developmental and cellular processes, including embryogenesis, cell migration, and cytokinesis [1]. To exert its functions, monomers of NM II assemble into bipolar filaments that produce a contractile force on the actin cytoskeleton. Mammalian cells express up to three isoforms of NM II (NM IIA, IIB, and IIC), each of which possesses distinct biophysica...

Journal: :Scientia Pharmaceutica 2022

This article concerns the synthesis and biological activities of some N-(1-(3,4-dimethoxyphenyl)propan-2-yl) amides as isoquinoline precursors compounds with smooth muscle (SM) relaxant activity. Aim: find activity compare it papaverine, an alkaloid that has been known a brain coronary vasodilator SM relaxant. Materials methods: In silico simulation PASS online program predicts for compounds. T...

Journal: :Diabetes 2002
Susanne U Trost Darrell D Belke Wolfgang F Bluhm Markus Meyer Eric Swanson Wolfgang H Dillmann

Diabetic cardiomyopathy is characterized by reduced cardiac contractility due to direct changes in heart muscle function independent of vascular disease. An important contributor to contractile dysfunction in the diabetic state is an impaired sarcoplasmic reticulum (SR) function, leading to disturbed intracellular calcium handling. We investigated whether overexpression of the SR calcium pump (...

Journal: :Current Biology 2014
Maria S. Shutova Waldo A. Spessott Claudio G. Giraudo Tatyana Svitkina

BACKGROUND Class II myosins generate contractile forces in cells by polymerizing into bipolar filaments and pulling on anchored actin filaments. Nonmuscle myosin II (NMII) plays central roles during cell adhesion, migration, cytokinesis, and tissue morphogenesis. NMII is present in virtually all mammalian cell types as tissue-specific combinations of NMIIA, NMIIB, and NMIIC isoforms. It remains...

Journal: :Bulletin of The London Mathematical Society 2022

Perfect graphs form one of the distinguished classes finite simple graphs. In 2006, Chudnovsky, Robertson, Seymour and Thomas proved that a graph is perfect if only it has no odd holes antiholes as induced subgraphs, which was conjectured by Berge. We consider class ${\mathcal A}$ have holes, stretchers subgraphs. particular, every belonging to perfect. Everett Reed belongs perfectly contractil...

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