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Pattern of rise in subplasma membrane Ca2+ concentration determines type of fusing insulin granules in pancreatic beta cells.

Ohara-Imaizumi M, Aoyagi K, Nakamichi Y, Nishiwaki C, Sakurai T, Nagamatsu S.

Biochem Biophys Res Commun. 2009 Jul 31;385(3):291-5. doi: 10.1016/j.bbrc.2009.04.155. Epub 2009 May 6.


The cytokine interleukin-1beta reduces the docking and fusion of insulin granules in pancreatic beta-cells, preferentially decreasing the first phase of exocytosis.

Ohara-Imaizumi M, Cardozo AK, Kikuta T, Eizirik DL, Nagamatsu S.

J Biol Chem. 2004 Oct 1;279(40):41271-4. Epub 2004 Aug 18.


Site of docking and fusion of insulin secretory granules in live MIN6 beta cells analyzed by TAT-conjugated anti-syntaxin 1 antibody and total internal reflection fluorescence microscopy.

Ohara-Imaizumi M, Nishiwaki C, Kikuta T, Kumakura K, Nakamichi Y, Nagamatsu S.

J Biol Chem. 2004 Feb 27;279(9):8403-8. Epub 2003 Dec 15.


Imaging exocytosis of single insulin secretory granules with TIRF microscopy.

Nagamatsu S, Ohara-Imaizumi M.

Methods Mol Biol. 2008;440:259-68. doi: 10.1007/978-1-59745-178-9_20.


Imaging exocytosis of single insulin secretory granules with evanescent wave microscopy: distinct behavior of granule motion in biphasic insulin release.

Ohara-Imaizumi M, Nakamichi Y, Tanaka T, Ishida H, Nagamatsu S.

J Biol Chem. 2002 Feb 8;277(6):3805-8. Epub 2001 Dec 21.


Imaging exocytosis of single glucagon-like peptide-1 containing granules in a murine enteroendocrine cell line with total internal reflection fluorescent microscopy.

Ohara-Imaizumi M, Aoyagi K, Akimoto Y, Nakamichi Y, Nishiwaki C, Kawakami H, Nagamatsu S.

Biochem Biophys Res Commun. 2009 Dec 4;390(1):16-20. doi: 10.1016/j.bbrc.2009.09.043. Epub 2009 Sep 18.


The L-type voltage-gated Ca2+ channel is the Ca2+ sensor protein of stimulus-secretion coupling in pancreatic beta cells.

Trus M, Corkey RF, Nesher R, Richard AM, Deeney JT, Corkey BE, Atlas D.

Biochemistry. 2007 Dec 18;46(50):14461-7. Epub 2007 Nov 21.


ELKS, a protein structurally related to the active zone-associated protein CAST, is expressed in pancreatic beta cells and functions in insulin exocytosis: interaction of ELKS with exocytotic machinery analyzed by total internal reflection fluorescence microscopy.

Ohara-Imaizumi M, Ohtsuka T, Matsushima S, Akimoto Y, Nishiwaki C, Nakamichi Y, Kikuta T, Nagai S, Kawakami H, Watanabe T, Nagamatsu S.

Mol Biol Cell. 2005 Jul;16(7):3289-300. Epub 2005 May 11.


Linoleic acid induces Ca2+-induced inactivation of voltage-dependent Ca2+ currents in rat pancreatic beta-cells.

Feng DD, Zhao YF, Luo ZQ, Keating DJ, Chen C.

J Endocrinol. 2008 Feb;196(2):377-84. doi: 10.1677/JOE-07-0426.


Insulin exocytosis in Goto-Kakizaki rat beta-cells subjected to long-term glinide or sulfonylurea treatment.

Kawai J, Ohara-Imaizumi M, Nakamichi Y, Okamura T, Akimoto Y, Matsushima S, Aoyagi K, Kawakami H, Watanabe T, Watada H, Kawamori R, Nagamatsu S.

Biochem J. 2008 May 15;412(1):93-101. doi: 10.1042/BJ20071282.


Glucose acutely decreases pH of secretory granules in mouse pancreatic islets. Mechanisms and influence on insulin secretion.

Stiernet P, Guiot Y, Gilon P, Henquin JC.

J Biol Chem. 2006 Aug 4;281(31):22142-51. Epub 2006 Jun 7.


A subset of p23 localized on secretory granules in pancreatic beta-cells.

Hosaka M, Watanabe T, Yamauchi Y, Sakai Y, Suda M, Mizutani S, Takeuchi T, Isobe T, Izumi T.

J Histochem Cytochem. 2007 Mar;55(3):235-45. Epub 2006 Nov 13.


Intergranular bridges in the anterior pituitary cell and their possible involvement in Ca2+-induced granule-granule fusion.

Senda T, Yamashita K, Okabe T, Sugimoto N, Matsuda M.

Cell Tissue Res. 1998 Jun;292(3):513-9.


Munc13-1 is required for the sustained release of insulin from pancreatic beta cells.

Kang L, He Z, Xu P, Fan J, Betz A, Brose N, Xu T.

Cell Metab. 2006 Jun;3(6):463-8. Epub 2006 May 11.


Insulin secretion in islets from mice with a double knockout for the dense core vesicle proteins islet antigen-2 (IA-2) and IA-2beta.

Henquin JC, Nenquin M, Szollosi A, Kubosaki A, Notkins AL.

J Endocrinol. 2008 Mar;196(3):573-81. doi: 10.1677/JOE-07-0496.


CAPS1 and CAPS2 regulate stability and recruitment of insulin granules in mouse pancreatic beta cells.

Speidel D, Salehi A, Obermueller S, Lundquist I, Brose N, Renström E, Rorsman P.

Cell Metab. 2008 Jan;7(1):57-67. doi: 10.1016/j.cmet.2007.11.009.


Regulation of zymogen granule exocytosis by Ca2+, cAMP, and PKC in pancreatic acinar cells.

Lee M, Chung S, Uhm DY, Park MK.

Biochem Biophys Res Commun. 2005 Sep 9;334(4):1241-7.


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