Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 15 of 15 for “"ROLE OF CA"”.
-
The role of Ca²⁺ and cAMP in GnRH-stimulated LH release
In this thesis a detailed study of the kinetics of GnRH-stimulated LH release was made. GnRH stimulated LH release in a biphasic manner. During the first 3 minutes of stimulation, there was a transient spike phase of release followed by plateau phase of lower amplitude. Both phases of release are …
-
The Role of Ca²⁺/CaM-Stimulated Phosphodiesterase 1C in Vascular Smooth Muscle cells of the Synthetic/Activated Phenotype
… show considerable promise in the treatment of vasculopathies associated with luminal narrowing and PDE inhibition currently represents one of the most selective methods of clinically modifying levels of these second messengers. Many cardiovascular diseases are associated with a change in …
-
The oocyte-to-embryo transition : regulation of oocyte maturation and egg activation in Drosophila
… must be highly regulated to ensure that growth of the oocyte and chromosomal segregation are coordinated properly. To do this, meiosis arrests at two points to permit oocyte differentiation and coordination with fertilization. In Drosophila, the first arrest in prophase I is released by oocyte …
-
Plastidial carbonic anhydrase in cotton (Gossypium hirsutum L.): characterization, expression, and role in lipid biosynthesis
Recently, plastidial carbonic anhydrase (CA, EC 4.2.1.1) cDNA clones encoding functional CA enzymes were isolated from a nonphotosynthetic cotton tissue. The role of CA in photosynthetic tissues have been well characterized, however there is almost no information for the role of CA in …
-
Role Of Calcium In Membrane Fusion
<p>This project is focused on understanding the role of calcium in membrane fusion at the atomic level. Membrane fusion is an intense area of experimental research,</p> <p>however, direct imaging of the membrane fusion mechanism has not been possible due to transient nature of the</p> <p>fusion …
-
Intracellular Calcium and Protein Kinase C Regulate Nonspecific Cell-Mediated Cytotoxicity by Mouse Lymphocytes (Calmodulin)
The role of Ca('2+) and other stimulus-response couplers in lymphocyte-mediated cytotoxicity was examined through the use of various pharmacological agents. The calcium ionophore A23187 caused a marked increase in nonspecific cytotoxicity by mouse spleen lymphocytes against SV3T3 target cells. …
-
An assessment of conservation agriculture adaption by smallholder farmers : a case of Goromanzi, Zimbabwe
ENGLISH SUMMARY: Conservation agriculture (CA) builds the resilience of farming systems and supports rural livelihoods. The practice is normally known for its benefits of promoting better crop yields and soil fertility in a sustainable way as a climate adaptation strategy. This study assesses …
-
CHARACTERIZATION OF CA²⁺-MEDIATED VIRULENCE AND MICROBIAL COMPETITION IN THE PLANT PATHOGEN PSEUDOMONAS SYRINGAE
Calcium ions (Ca²⁺) are ubiquitous signaling molecules that play critical roles across all domains of life. In plants, Ca²⁺ acts as a central second messenger that transduces a wide array of biotic and abiotic signals, including those triggered during interactions with microbial pathogens. Upon …
-
Light Stimulation of Sensory Hair Cells
… detectors that underlie our senses of audition and balance. Their mechanosensitivity arises from direct gating of force-sensitive ion channels by the tension in tip links located at the tops of the stereocilia. The study of hair cells and their mechanically gated channels has …
-
Cellular Mechanisms Underlying Myogenic Reactivity in Isolated Arterioles
<p>The myogenic reactivity provides one of the principal mechanisms for blood flow autoregulation. The aims of the performed studies described in this dissertation were to test the role of [Ca<sup>2+</sup>]<sub>i</sub> and MLC phosphorylation in arteriolar myogenic reactivity and further examine …
-
Dissecting the anti-allergic potential of carnosic acid during IgE and IL-33-mediated mast cell activation
Mast cells are critical immune sentinels and essential regulators of inflammation, most notably recognized for their central role in allergic inflammation. Allergen-induced cross-linkage of FcεRI complexes initiates a biphasic mast cell response, characterized by the immediate degranulation of …
-
Modulation of soybean and maize antioxidant activities by Caffeic acid and nitric oxide under salt stress
This study explores the roles of exogenously applied nitric oxide, exogenously applied caffeic acid and salt stress on the ontioxidant system in cereal (exemplified by maize) and legume (using soybean as an example) plants together with their influence on membrane integrity and cell death. This …
-
High-resolution optical analyses of inositol 1,4,5-trisphosphate receptors and the Ca²⁺ puffs they evoke
Ca²⁺ is an essential and near-universal intracellular messenger. Many intracellular Ca²⁺ signals are initiated by inositol 1,4,5-trisphosphate receptors (IP₃Rs) which respond to IP₃ produced when cell-surface receptors stimulate phospholipase C. IP₃Rs are regulated by both IP₃ and Ca²⁺, a property …
-
ΑΛΛΗΛΕΠΙΔΡΑΣΕΙΣ ΙΟΝΤΩΝ ΚΑΙ ΠΡΟΣΑΝΑΤΟΛΙΣΜΕΝΩΝ ΘΥΛΑΚΟΕΙΔΩΝ ΚΥΑΝΟΒΑΚΤΗΡΙΩΝ
THE REGULATION OF PHOTOELECTRON TRANSPORT ACTIVITY BY INORGANIC IONS WAS STUDIED WITH PERMEABLE ANACYSTIS NIDULANS CELLS, CONTAINING SEALED AND PROPERLY ORIENTED THYLAKOIDS, CAPABLE OF COUPLED ELECTRON TRANSPORT TO POST-PHOTOSYSTEM I, ELECTRON ACCEPTORS. THE IONIC CONTROL OF PHOTOELECTRON TRANSPORT …