background: gap-junctional intercellular communication (gjic) is implicated in physicological processes and it is vitally important for granulosa cell (gc) differentiation and oocyte growth. we investigated the expression of connexin 43 (cx43), a gap junctional protein, in normal and androstenedione-induced polycystic ovary (pco), the effects of androstenedione on cx43 expression, gjic and prog...

Gap junctions are cellular contact sites composed of clustered connexin transmembrane proteins that act in dual capacities as channels for direct intercellular exchange of small molecules and as structural adhesion complexes known as gap junction nexuses. Depending on the connexin isoform, the cluster of channels (the gap junction plaque) can be stably or fluidly arranged. Here we used confocal...

Although loss of connexin expression and/or gap junction intercellular communication correlates with decreased growth control and increased neoplastic potential, there is limited evidence directly linking gap junction intercellular communication function with tumor suppression in situ. Here, we show for the first time that a gap junction protein, connexin32 (Cx32), acts as a lung tumor suppress...

Epithelial, fibroblast and intermediate cell lines were employed to examine the mechanism(s) essential for heterocellular gap junction intercellular communication in vitro. These cell lines were characterized extensively for cell type based on morphology, intermediate cytoskeletal proteins, cell adhesion molecules and their associated proteins, tight junction proteins as well as functional diff...

788 with a lipidlprotein molar ratio of 100:1, a value close to that found in most biological membranes [21]. The data show that the calculation of distances between sites within the monomer of a membrane protein of a cross-sectional diameter of 5 nm based only from FET efficiency measurements is largely speculative in most cases in native biological membranes. Because the contribution of FET t...

Diese Dissertation ist auf dem Hochschulschriftenserver der ULB Bonn unter junction communication and paracrine signaling pathways during organogenesis in Drosophila. (2006). DE-cadherin, a core component of the adherens junction complex modifies subcellular localization of the Drosophila gap junction protein innexin2. Intercellular communication: the Drosophila innexin multiprotein family of g...

Epithelial cells function as a mechanical barrier against invasion by pathogenic organisms and promote intercellular communication through cell-cell junction complexes. Therefore, the permeability and homeostasis of the gingival epithelial cell layer indicates a defensive capability against invasion by periodontal pathogens. Irsogladine maleate is a medication for gastric ulcer, and is also kno...

Gap junction-mediated communication can modulate cell death in different tissues. In myocardium, gap junction communication is altered during ischemia, which contributes to the development of arrhythmias, but still allows synchronization of the onset of rigor contracture in the progression of injury. During reperfusion, gap junction communication allows cell-to-cell spread of hypercontracture a...