PMID- 24680825 OWN - NLM STAT- MEDLINE DCOM- 20140623 LR - 20181202 IS - 1090-2104 (Electronic) IS - 0006-291X (Linking) VI - 447 IP - 1 DP - 2014 Apr 25 TI - Cell-to-cell propagation of intracellular signals fluorescently visualized with acridine orange in the gastric glands of guinea pigs. PG - 38-43 LID - S0006-291X(14)00544-0 [pii] LID - 10.1016/j.bbrc.2014.03.095 [doi] AB - Secretion from the gastric gland involves the activation of various types of cells in a coordinated manner. In order to elucidate the mechanisms underlying the coordination of secretion, we studied live fluorescence images of guinea pig gastric glands stained with acridine orange (AO). On 2 muM AO staining, individual cells were characterized by metachromatic colors and various intensities of fluorescence. When the gland was stimulated with 100 muM of histamine, green fluorescence was transiently increased in parietal cells and intermediate cells and propagated along the gland for a long distance over many cells. Local stimulation in a couple of cells with histamine in the presence of suramin also induced propagation. However, the fluorescence response was suppressed by the addition of H-89, a protein kinase A inhibitor. These findings suggest that a cAMP-dependent signal propagates intercellularly through a variety of cells to induce coordinated secretion in the entire gastric gland. CI - Copyright (c) 2014 Elsevier Inc. All rights reserved. FAU - Fukushi, Yasuko AU - Fukushi Y AD - Medical Photonics Research Center, Hamamatsu University School of Medicine, Hamamatsu, Japan. FAU - Sakurai, Takashi AU - Sakurai T AD - Medical Photonics Research Center, Hamamatsu University School of Medicine, Hamamatsu, Japan. FAU - Terakawa, Susumu AU - Terakawa S AD - Medical Photonics Research Center, Hamamatsu University School of Medicine, Hamamatsu, Japan. Electronic address: terakawa@hama-med.ac.jp. LA - eng PT - Journal Article DEP - 20140327 PL - United States TA - Biochem Biophys Res Commun JT - Biochemical and biophysical research communications JID - 0372516 RN - 0 (Isoquinolines) RN - 0 (Sulfonamides) RN - 820484N8I3 (Histamine) RN - F30N4O6XVV (Acridine Orange) RN - M876330O56 (N-(2-(4-bromocinnamylamino)ethyl)-5-isoquinolinesulfonamide) RN - SY7Q814VUP (Calcium) SB - IM MH - Acridine Orange MH - Animals MH - Calcium/physiology MH - Cell Communication/drug effects/*physiology MH - Gastric Mucosa/*physiology MH - Guinea Pigs MH - Histamine/pharmacology MH - Isoquinolines/pharmacology MH - Male MH - Microscopy, Fluorescence MH - Parietal Cells, Gastric/drug effects/metabolism/*physiology MH - *Signal Transduction MH - Sulfonamides/pharmacology OTO - NOTNLM OT - A-kinase system OT - Fluorescence imaging OT - Gap junction OT - Parietal cell EDAT- 2014/04/01 06:00 MHDA- 2014/06/24 06:00 CRDT- 2014/04/01 06:00 PHST- 2014/03/14 00:00 [received] PHST- 2014/03/19 00:00 [accepted] PHST- 2014/04/01 06:00 [entrez] PHST- 2014/04/01 06:00 [pubmed] PHST- 2014/06/24 06:00 [medline] AID - S0006-291X(14)00544-0 [pii] AID - 10.1016/j.bbrc.2014.03.095 [doi] PST - ppublish SO - Biochem Biophys Res Commun. 2014 Apr 25;447(1):38-43. doi: 10.1016/j.bbrc.2014.03.095. Epub 2014 Mar 27.