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Eduardo Rojas

Research Profile

Chemicals & Drugs

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Physiology

Membrane Fusion

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Publications

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David Mears; Harvey B Pollard; Eduardo Rojas; Illani Atwater; Mirta Glassman; Ximena Leighton; Charles L Zimliki; Meera Srivastava
The Anx7(+/-) knockout mutation alters electrical and secretory responses to Ca(2+)-mobilizing agents in pancreatic β-cells.
Christian Arriagada; Miguel Bustamante; Illani Atwater; Eduardo Rojas; Raúl Caviedes; Pablo Caviedes
Apoptosis is directly related to intracellular amyloid accumulation in a cell line derived from the cerebral cortex of a trisomy 16 mouse, an animal model of Down syndrome.
Christian Arriagada; César Astorga; Illani Atwater; Eduardo Rojas; David Mears; Raúl Caviedes; Pablo Caviedes
Endosomal abnormalities related to amyloid precursor protein in cholesterol treated cerebral cortex neuronal cells derived from trisomy 16 mice, an animal model of Down syndrome.

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All Publications

2012: David Mears; Harvey B Pollard; Eduardo Rojas; Illani Atwater; Mirta Glassman; Ximena Leighton; Charles L Zimliki; Meera Srivastava
The Anx7(+/-) knockout mutation alters electrical and secretory responses to Ca(2+)-mobilizing agents in pancreatic β-cells.
Cellular physiology and biochemistry : international journal of experimental cellular physiology, biochemistry, and pharmacology 2012;29(5-6):697-704.
2010: Christian Arriagada; Miguel Bustamante; Illani Atwater; Eduardo Rojas; Raúl Caviedes; Pablo Caviedes
Apoptosis is directly related to intracellular amyloid accumulation in a cell line derived from the cerebral cortex of a trisomy 16 mouse, an animal model of Down syndrome.
Neuroscience letters 2010;470(1):81-5.
2007: Christian Arriagada; César Astorga; Illani Atwater; Eduardo Rojas; David Mears; Raúl Caviedes; Pablo Caviedes
Endosomal abnormalities related to amyloid precursor protein in cholesterol treated cerebral cortex neuronal cells derived from trisomy 16 mice, an animal model of Down syndrome.
Neuroscience letters 2007;423(2):172-7.
2006: David Mears; Eduardo Rojas
Properties of voltage-gated Ca2+ currents measured from mouse pancreatic beta-cells in situ.
Biological research 2006;39(3):505-20.
2006: Juan Marcos Alarcón; Julio A Brito; Tamara Hermosilla; Illani Atwater; David Mears; Eduardo Rojas
Ion channel formation by Alzheimer's disease amyloid beta-peptide (Abeta40) in unilamellar liposomes is determined by anionic phospholipids.
Peptides 2006;27(1):95-104.
2003: Li-Ping He; David Mears; Illani Atwater; Eduardo Rojas; Lars Cleemann
Loperamide mobilizes intracellular Ca2+ stores in insulin-secreting HIT-T15 cells.
British journal of pharmacology 2003;139(2):351-61.
2000: J Vargas; Juan Marcos Alarcón; Eduardo Rojas
Displacement currents associated with the insertion of Alzheimer disease amyloid beta-peptide into planar bilayer membranes.
Biophysical journal 2000;79(2):934-44.
2000: I Lamensdorf; C Hrycyna; Li-Ping He; Amotz Nechushtan; OA Tjurmina; Judith Harvey-White; Graeme Eisenhofer; Eduardo Rojas; Irwin J Kopin
Acidic dopamine metabolites are actively extruded from PC12 cells by a novel sulfonylurea-sensitive transporter.
Naunyn-Schmiedeberg's archives of pharmacology 2000;361(6):654-64.
2000: I Lamensdorf; L He; Amotz Nechushtan; Judith Harvey-White; Graeme Eisenhofer; R Milan; Eduardo Rojas; Irwin J Kopin
Effect of glipizide on dopamine synthesis, release and metabolism in PC12 cells.
European journal of pharmacology 2000;388(2):147-54.
1999: Meera Srivastava; Illani Atwater; Mirta Glasman; Ximena Leighton; Gertrud Goping; Hung Caohuy; G Miller; José G Pichel; Heiner Westphal; David Mears; Eduardo Rojas; Harvey B Pollard
Defects in inositol 1,4,5-trisphosphate receptor expression, Ca(2+) signaling, and insulin secretion in the anx7(+/-) knockout mouse.
Proceedings of the National Academy of Sciences of the United States of America 1999;96(24):13783-8.
1999: David Mears; Ximena Leighton; Illani Atwater; Eduardo Rojas
Tetracaine stimulates insulin secretion from the pancreatic beta-cell by release of intracellular calcium.
Cell calcium 1999;25(1):59-68.
1997: M Luxoro; V Nassar-Gentina; Eduardo Rojas
Deprivation of Na+, Ca2+ and Mg2+ from the extracellular solution increases cytosolic Ca2+ and stimulates catecholamine secretion from cultured bovine adrenal chromaffin cells.
Molecular and cellular biochemistry 1997;170(1-2):65-73.
1996: Nelson Arispe; Eduardo Rojas; Brian Genge; Licia Wu; Roy Wuthier
Similarity in calcium channel activity of annexin V and matrix vesicles in planar lipid bilayers.
Biophysical journal 1996;71(4):1764-75.
1996: P Raynal; G Kuijpers; Eduardo Rojas; Harvey B Pollard
A rise in nuclear calcium translocates annexins IV and V to the nuclear envelope.
FEBS letters 1996;392(3):263-8.
1996: Nelson Arispe; Harvey B Pollard; Eduardo Rojas
Zn2+ interaction with Alzheimer amyloid beta protein calcium channels.
Proceedings of the National Academy of Sciences of the United States of America 1996;93(4):1710-5.
1996: D Singer-Lahat; Eduardo Rojas; Christian Felder
Muscarinic receptor activated Ca2+ channels in non-excitable cells.
Progress in brain research 1996;109():195-9.
1995: Harvey B Pollard; Nelson Arispe; Eduardo Rojas
Ion channel hypothesis for Alzheimer amyloid peptide neurotoxicity.
Cellular and molecular neurobiology 1995;15(5):513-26.
1995: L A Vergara; Stanko S Stojilkovic; Eduardo Rojas
GnRH-induced cytosolic calcium oscillations in pituitary gonadotrophs: phase resetting by membrane depolarization.
Biophysical journal 1995;69(4):1606-14.
1995: Nelson Arispe; Philippe de Mazancourt; Eduardo Rojas
Direct control of a large conductance K(+)-selective channel by G-proteins in adrenal chromaffin granule membranes.
The Journal of membrane biology 1995;147(2):109-19.
1995: Antonio C Boschero; M Szpak-Glasman; Everardo M Carneiro; Silvana Bordin; I Paul; Eduardo Rojas; Illani Atwater
Oxotremorine-m potentiation of glucose-induced insulin release from rat islets involves M3 muscarinic receptors.
The American journal of physiology 1995;268(2 Pt 1):E336-42.
1995: Eduardo Rojas; C L Stokes; D Mears; Illani Atwater
Single-microelectrode voltage clamp measurements of pancreatic beta-cell membrane ionic currents in situ.
The Journal of membrane biology 1995;143(1):65-77.
1994: Nelson Arispe; Harvey B Pollard; Eduardo Rojas
The ability of amyloid beta-protein [A beta P (1-40)] to form Ca2+ channels provides a mechanism for neuronal death in Alzheimer's disease.
Annals of the New York Academy of Sciences 1994;747():256-66.
1994: V Nassar-Gentina; Eduardo Rojas; M Luxoro
Rise in cytoplasmic Ca2+ induced by monensin in bovine medullary chromaffin cells.
Cell calcium 1994;16(6):475-80.
1994: Stewart R Durell; H Robert Guy; Nelson Arispe; Eduardo Rojas; Harvey B Pollard
Theoretical models of the ion channel structure of amyloid beta-protein.
Biophysical journal 1994;67(6):2137-45.
1994: P B Carroll; A S Moura; Eduardo Rojas; Illani Atwater
The diabetogenic agent alloxan increases K+ permeability by a mechanism involving activation of ATP-sensitive K(+)-channels in mouse pancreatic beta-cells.
Molecular and cellular biochemistry 1994;140(2):127-36.
1994: Nelson Arispe; Harvey B Pollard; Eduardo Rojas
beta-Amyloid Ca(2+)-channel hypothesis for neuronal death in Alzheimer disease.
Molecular and cellular biochemistry 1994;140(2):119-25.
1994: J R Pollard; Nelson Arispe; Eduardo Rojas; Harvey B Pollard
A geometric sequence that accurately describes allowed multiple conductance levels of ion channels: the "three-halves (3/2) rule".
Biophysical journal 1994;67(2):647-55.
1994: E Jaimovich; Eduardo Rojas
Intracellular Ca2+ transients induced by high external K+ and tetracaine in cultured rat myotubes.
Cell calcium 1994;15(5):356-68.
1994: Eduardo Rojas; P B Carroll; Camillo Ricordi; Antonio C Boschero; Stanko S Stojilkovic; Illani Atwater
Control of cytosolic free calcium in cultured human pancreatic beta-cells occurs by external calcium-dependent and independent mechanisms.
Endocrinology 1994;134(4):1771-81.
1994: Manuel Kukuljan; Eduardo Rojas; Kevin J Catt; Stanko S Stojilkovic
Membrane potential regulates inositol 1,4,5-trisphosphate-controlled cytoplasmic Ca2+ oscillations in pituitary gonadotrophs.
The Journal of biological chemistry 1994;269(7):4860-5.
1993: Nelson Arispe; Harvey B Pollard; Eduardo Rojas
Giant multilevel cation channels formed by Alzheimer disease amyloid beta-protein [A beta P-(1-40)] in bilayer membranes.
Proceedings of the National Academy of Sciences of the United States of America 1993;90(22):10573-7.
1993: E Olivares; Nelson Arispe; Eduardo Rojas
Properties of the ryanodine receptor present in the sarcoplasmic reticulum from lobster skeletal muscle.
Membrane biochemistry 1993;10(4):221-35.
1993: Harvey B Pollard; Eduardo Rojas; Nelson Arispe
A new hypothesis for the mechanism of amyloid toxicity, based on the calcium channel activity of amyloid beta protein (A beta P) in phospholipid bilayer membranes.
Annals of the New York Academy of Sciences 1993;695():165-8.
1993: I A Paul; Anthony Basile; Eduardo Rojas; Moussa B H Youdim; B De Costa; Phil Skolnick; Harvey B Pollard; G A Kuijpers
Sigma receptors modulate nicotinic receptor function in adrenal chromaffin cells.
FASEB journal : official publication of the Federation of American Societies for Experimental Biology 1993;7(12):1171-8.
1993: C González-García; V Ceña; H R Keiser; Eduardo Rojas
Catecholamine secretion induced by tetraethylammonium from cultured bovine adrenal chromaffin cells.
Biochimica et biophysica acta 1993;1177(1):99-105.
1993: Stanko S Stojilkovic; Manuel Kukuljan; M Tomić; Eduardo Rojas; Kevin J Catt
Mechanism of agonist-induced [Ca2+]i oscillations in pituitary gonadotrophs.
The Journal of biological chemistry 1993;268(11):7713-20.
1993: Nelson Arispe; Eduardo Rojas; Harvey B Pollard
Alzheimer disease amyloid beta protein forms calcium channels in bilayer membranes: blockade by tromethamine and aluminum.
Proceedings of the National Academy of Sciences of the United States of America 1993;90(2):567-71.
1992: Nelson Arispe; Harvey B Pollard; Eduardo Rojas
Calcium-independent K(+)-selective channel from chromaffin granule membranes.
The Journal of membrane biology 1992;130(2):191-202.
1992: Stanko S Stojilkovic; Manuel Kukuljan; T Iida; Eduardo Rojas; Kevin J Catt
Integration of cytoplasmic calcium and membrane potential oscillations maintains calcium signaling in pituitary gonadotrophs.
Proceedings of the National Academy of Sciences of the United States of America 1992;89(9):4081-5.
1992: Eduardo Rojas; Nelson Arispe; Harry T Haigler; A Lee Burns; Harvey B Pollard
Identification of annexins as calcium channels in biological membranes.
Bone and mineral 1992;17(2):214-8.
1992: Manuel Kukuljan; Stanko S Stojilkovic; Eduardo Rojas; Kevin J Catt
Apamin-sensitive potassium channels mediate agonist-induced oscillations of membrane potential in pituitary gonadotrophs.
FEBS letters 1992;301(1):19-22.
1992: JENNY FIEDLER; Harvey B Pollard; Eduardo Rojas
Quantitative analysis of depolarization-induced ATP release from mouse brain synaptosomes: external calcium dependent and independent processes.
The Journal of membrane biology 1992;127(1):21-33.
1992: Harvey B Pollard; H Robert Guy; Nelson Arispe; M de la Fuente; G Lee; Eduardo Rojas; J R Pollard; Meera Srivastava; Z Y Zhang-Keck; N Merezhinskaya
Calcium channel and membrane fusion activity of synexin and other members of the Annexin gene family.
Biophysical journal 1992;62(1):15-8.
1992: Stanko S Stojilkovic; A Torsello; T Iida; Eduardo Rojas; Kevin J Catt
Calcium signaling and secretory responses in agonist-stimulated pituitary gonadotrophs.
The Journal of steroid biochemistry and molecular biology 1992;41(3-8):453-67.
1992: Nelson Arispe; Eduardo Rojas; J Hartman; Eric J Sorscher; Harvey B Pollard
Intrinsic anion channel activity of the recombinant first nucleotide binding fold domain of the cystic fibrosis transmembrane regulator protein.
Proceedings of the National Academy of Sciences of the United States of America 1992;89(5):1539-43.
1992: Eduardo Rojas; V Nassar-Gentina; M E Pollard; M Luxoro
Mechanisms of calcium release from terminal cisternae in crustacean muscle.
Advances in experimental medicine and biology 1992;311():305-17.
1992: Harvey B Pollard; Eduardo Rojas; A Lee Burns
Synexin (annexin VII) and membrane fusion during the process of exocytotic secretion.
Progress in brain research 1992;92():247-55.
1991: V Ceña; K W Brocklehurst; Harvey B Pollard; Eduardo Rojas
Pertussis toxin stimulation of catecholamine release from adrenal medullary chromaffin cells: mechanism may be by direct activation of L-type and G-type calcium channels.
The Journal of membrane biology 1991;122(1):23-31.
1991: R Etcheberrigaray; JENNY FIEDLER; Harvey B Pollard; Eduardo Rojas
Endoplasmic reticulum as a source of Ca2+ in neurotransmitter secretion.
Annals of the New York Academy of Sciences 1991;635():90-9.
1991: A Lee Burns; K Magendzo; Meera Srivastava; Eduardo Rojas; C Cultraro; M de la Fuente; J Heldman; C Parra; Harvey B Pollard
Properties and modification of recombinant human synexin (annexin VII).
Annals of the New York Academy of Sciences 1991;635():450-1.
1991: Harvey B Pollard; Eduardo Rojas; R W Pastor; E M Rojas; H Robert Guy; A Lee Burns
Synexin: molecular mechanism of calcium-dependent membrane fusion and voltage-dependent calcium-channel activity. Evidence in support of the "hydrophobic bridge hypothesis" for exocytotic membrane fusion.
Annals of the New York Academy of Sciences 1991;635():328-51.
1990: Eduardo Rojas; Harvey B Pollard; Harry T Haigler; C Parra; A Lee Burns
Calcium-activated endonexin II forms calcium channels across acidic phospholipid bilayer membranes.
The Journal of biological chemistry 1990;265(34):21207-15.
1990: A Lee Burns; K Magendzo; Meera Srivastava; Eduardo Rojas; C Parra; M de la Fuente; C Cultraro; A Shirvan; T Vogel; J Heldman
Human synexin (annexin VII) polymorphisms: tissue specificity and expression in Escherichia coli.
Biochemical Society transactions 1990;18(6):1118-21.
1990: Stanko S Stojilkovic; T Iida; M A Virmani; S Izumi; Eduardo Rojas; Kevin J Catt
Dependence of hormone secretion on activation-inactivation kinetics of voltage-sensitive Ca2+ channels in pituitary gonadotrophs.
Proceedings of the National Academy of Sciences of the United States of America 1990;87(22):8855-9.
1990: Harvey B Pollard; A Lee Burns; Eduardo Rojas
Synexin (annexin VII): a cytosolic calcium-binding protein which promotes membrane fusion and forms calcium channels in artificial bilayer and natural membranes.
The Journal of membrane biology 1990;117(2):101-12.
1990: V Ceña; Eduardo Rojas
Kinetic characteristics of calcium-dependent, cholinergic receptor controlled ATP secretion from adrenal medullary chromaffin cells.
Biochimica et biophysica acta 1990;1023(2):213-22.
1990: Stanko S Stojilkovic; A Stutzin; S Izumi; S Dufour; A Torsello; M A Virmani; Eduardo Rojas; Kevin J Catt
Generation and amplification of the cytosolic calcium signal during secretory responses to gonadotropin-releasing hormone.
The New biologist 1990;2(3):272-83.
1990: Eduardo Rojas; J Hidalgo; P B Carroll; M X Li; Illani Atwater
A new class of calcium channels activated by glucose in human pancreatic beta-cells.
FEBS letters 1990;261(2):265-70.
1990: E Mancilla; Eduardo Rojas
Quinine blocks the high conductance, calcium-activated potassium channel in rat pancreatic beta-cells.
FEBS letters 1990;260(1):105-8.
1990: Eduardo Rojas; V Ceña; A Stutzin; E Forsberg; Harvey B Pollard
Characteristics of receptor-operated and membrane potential-dependent ATP secretion from adrenal medullary chromaffin cells.
Annals of the New York Academy of Sciences 1990;603():311-22; discussion 322-3.
1990: Harvey B Pollard; A Lee Burns; Eduardo Rojas
Synexin, a new member of the annexin gene family, is a calcium channel and membrane fusion protein.
Progress in clinical and biological research 1990;349():159-72.
1989: V Ceña; A Stutzin; Eduardo Rojas
Effects of calcium and Bay K-8644 on calcium currents in adrenal medullary chromaffin cells.
The Journal of membrane biology 1989;112(3):255-65.
1989: A Stutzin; Stanko S Stojilkovic; Kevin J Catt; Eduardo Rojas
Characteristics of two types of calcium channels in rat pituitary gonadotrophs.
The American journal of physiology 1989;257(5 Pt 1):C865-74.
1989: Stanko S Stojilkovic; Eduardo Rojas; A Stutzin; S Izumi; Kevin J Catt
Desensitization of pituitary gonadotropin secretion by agonist-induced inactivation of voltage-sensitive calcium channels.
The Journal of biological chemistry 1989;264(19):10939-42.
1989: R M Santos; Eduardo Rojas
Muscarinic receptor modulation of glucose-induced electrical activity in mouse pancreatic B-cells.
FEBS letters 1989;249(2):411-7.
1989: A Lee Burns; K Magendzo; A Shirvan; Meera Srivastava; Eduardo Rojas; M R Alijani; Harvey B Pollard
Calcium channel activity of purified human synexin and structure of the human synexin gene.
Proceedings of the National Academy of Sciences of the United States of America 1989;86(10):3798-802.
1989: Harvey B Pollard; A Lee Burns; Eduardo Rojas; D D Schlaepfer; Harry T Haigler; K Brocklehurst
Purification and biochemical assay of synexin and of the homologous calcium-dependent membrane-binding proteins, endonexin II and lipocortin I.
Methods in cell biology 1989;31():207-27.
1988: Harvey B Pollard; A Lee Burns; Eduardo Rojas
A molecular basis for synexin-driven, calcium-dependent membrane fusion.
The Journal of experimental biology 1988;139():267-86.
1988: P B Carroll; M X Li; Eduardo Rojas; Illani Atwater
The ATP-sensitive potassium channel in pancreatic B-cells is inhibited in physiological bicarbonate buffer.
FEBS letters 1988;234(1):208-12.
1988: F Gusovsky; John W Daly; T Yasumoto; Eduardo Rojas
Differential effects of maitotoxin on ATP secretion and on phosphoinositide breakdown in rat pheochromocytoma cells.
FEBS letters 1988;233(1):139-42.
1988: V Nassar-Gentina; Harvey B Pollard; Eduardo Rojas
Electrical activity in chromaffin cells of intact mouse adrenal gland.
The American journal of physiology 1988;254(5 Pt 1):C675-83.
1988: Harvey B Pollard; Eduardo Rojas
Ca2+-activated synexin forms highly selective, voltage-gated Ca2+ channels in phosphatidylserine bilayer membranes.
Proceedings of the National Academy of Sciences of the United States of America 1988;85(9):2974-8.
1987: Eduardo Rojas; V Nassar-Gentina; M Luxoro; M E Pollard; M A Carrasco
Inositol 1,4,5-trisphosphate-induced Ca2+ release from the sarcoplasmic reticulum and contraction in crustacean muscle.
Canadian journal of physiology and pharmacology 1987;65(4):672-80.