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Publications


- 2014 -


Trypanosoma cruzi Calreticulin Topographical Variations in Parasites Infecting Murine Macrophages
González A, Valck C, Sanchez G, Härtel S, Mansilla J, Ramirez G, Fernandez S, Arias JL, Galanti N and Ferreira A
The American Journal of Tropical Medicine and Hygiene, accepted.


Bleomycin-induced yH2AX foci map preferentially to replicating domains in CHO9 interphase nuclei
Liddle P, Lafon-Hughes L, Di Tomaso MV, Reyes-Ábalos AL, Jara J, Cerda M, Härtel S and G Folle
Chromosome Research, CHRS-s-13-00133, DOI: 10.1007/s10577-014-9433-9
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Gold-standard and improved framework for sperm head segmentation
Chang V, Saavedraa J, Castaneda V, Sarabia L, Hitschfeld N and S Härtel
Computer Methods and Programs in Biomedicine, DOI:10.1016/j.cmpb.2014.06.018
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Computational Methods for Analysis of Dynamic Events In Cell Migration.
Castañeda V, Cerda M, Santibañez F, Jara J, Pulgar E, Palma K, Lemus CG, Concha M, Härtel S
Current Molecular Medicine, 14(2), 291-307.
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Spermatozoa from mice deficient in Niemann-Pick disease type C2 (NPC2) protein have defective cholesterol content and reduced in vitro fertilising ability.
Busso D, Oñate-Alvarado MJ, Balboa E, Castro J, Lizama C, Morales G, Vargas S, Härtel S, Moreno RD and S Zanlungo
Reproduction, Fertility and Development, 26(4), 609-21. doi: 10.1071/RD12059
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Ryanodine receptor-mediated Ca2+ release underlies iron-induced mitochondrial fission and stimulates mitochondrial Ca2+ uptake in primary hippocampal neurons.
San Martín CD, Paula-Lima AC, García A, Härtel S, Núñez MT and C Hidalgo
Frontiers in Molecular Neuroscience, 11, 7-13. doi: 10.3389/fnmol.2014.00013
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P35 and p120 catenina subyacen a la neuroprotección y plasticidad inducida a través de silenciamiento CDK5.
Posada-Duque R, López-Tobón R, Piedrahita D, Bodaleo F, Ramírez O, Härtel S, González-Billault Ch, Ca GP. Journal of Neurochemistry, submitted


Optimización y paralización de un algoritmo de generación de skeletons.
Ivan Rojas, Memoria de Titulo Para Ingeniero Civil en Computación. UF-Med/FCFM, Universidad de Chile, Santiago, Chile.
Tutores: Prof. N Hitschfeld, M Cerda and S Härtel


Combining Harris interest points and frame-based ANN for classification of near-infrared hyperspectral images: application in assessment of mechanical damage in mushrooms.
Rojas-Moraleda R; A Valous N; Gowen A Esquerre C; Härtel S; Salinas L; Colm o'donnell Applied Soft Computing (check status)


Combined Local Global Optical Flow
Jara J, Cerda M, Delpiano J, and S Härtel
Image Processing On Line, in press
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- 2013 -


A Comprehensive System for Facial Animation of Generic 3D Head Models driven by Speech
Terissi L, Cerda M, Gomez JC, Hitschfeld-Kahler N, and Girau B.
EURASIP Journal of Audio, Speech and Music Processing (Springer), 5, 5 doi:10.1186/1687-4722-2013-5
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SOFI of GABAB neurotransmitter receptors in hippocampal neurons elucidates intracellular receptor trafficking and assembly. Proceedings of SPIE.
Huss A, Ramírez OA, Santibañez F, Couve A, Härtel S, Enderlein J. Proceedings of SPIE. Vol. 8590. doi: 10.1117/12.2006215


Stereo Time-of-Flight with Constructive Interference
Victor Castaneda, Diana Mateus and Nassir Navab
IEEE Transactions on Pattern Analysis and Machine Intelligence (Accepted)
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Daam1 is an effector of asymmetric brain morphogenesis that regulates dendritic and axonal outgrowth in dorsal habenular neurons
Colombo A, Palma K, Armijo L, Mione M, Signore IA, Morales C, Guerrero N, Pérez R, Suazo J, Marcelain K, Briones L, Härtel S, Wilson SW, and M Concha
Development, 140, 3997-4007
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Asymmetry in neural fields: a spatiotemporal encoding mechanism
Cerda M and Girau B
Biological Cybernetics Volume 107, Issue 2 (2013), Page 161-178 (Springer). doi:10.1007/s00422-012-0544-0 (Online)
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- 2012 -


Ciencia Computacional Aplicada a la Biomedicina
Jara J, Histchfeld N, and Härtel S
further authors : Lemus C, Santibáñez F, Ramirez O, Concha M. Revista BITS de Ciencia, Departamento de Ciencias de la Computacion, Universidad de Chile, Issue 8, pp: 36-43
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TRP, TRPL and cacophony channels mediate Ca2+ influx and exocytosis in axonal terminals of Drosophila photoreceptors
Astorga G, Härtel S, Sanhueza M and J Bacigalupo
PLosOne, PLoS ONE 7(8): e44182. doi:10.1371/journal.pone.0044182
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Generación de skeletons a partir de mallas de superficie
Liliana Alcayaga, Memoria para: Ingeniero Civil en Computación, F-Med/FCFM, Universidad de Chile, Santiago, Chile. Tutores: S Hartel (F-Med) / N Hitschfeld (DCC/FCFM)
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Performance of optical flow techniques for motion analysis of fluorescent point signals in confocal microscopy
Delpiano J, Jara J, Scheer J, Ramírez O, Ruiz-del-Solar J and S Härtel
Machine Vision and Applications, Volume 23, Issue 4, pp: 675-89
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Caveolin-1-Enhanced Motility and Focal Adhesion Turnover Require Tyrosine-14 but not Accumulation to the Rear in Metastatic Cancer Cells
Urra H, Torres V, Ortiz R, Lobos L, Díaz M, Díaz N, Härtel S, Leyton L, and A Quest
PLosOne, Volume 7, Issue 4, e33085, 1-14
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A Method for Analysis of Lipid Vesicle Domain Structure from Confocal Image Data
Husen P, Fidorra M, Härtel S, Bagatolli L, and J Ipsen
European Biophysics Journal (EBJO), 41(2): 161-75
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- 2011 -


Microtubule-associated protein 1B (MAP1B) is required for dendritic spine development and synaptic maturation
Tortosa E, Montenegro-Venegas C, Benoist M, Hartel S, Gonzalez-Billault C, Esteban J and J Avila
J Biol Chem. 2011 Oct 7. [Epub ahead of print]
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Development of 3D Architecture of Uropathogenic Proteus mirabilis Batch Culture Biofilms - A Quantitative Confocal Microscopy Approach -
Schlapp G, Scavone P, Zunino P and S Härtel
J Microbiol Methods, 87(2) : 234-40
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Changes in Rab3D expression and distribution in acini of Sjögren's Syndrome patients is associated to loss of cell polarity and secretory dysfunction
Bahamondes V, Albornoz M, Aguilera S, Alliende C, Molina C , Castro I, Urzua U, Quest A, Barrera M, González S, Sanchez M, Härtel S, Hermoso M, Leyton C & González M
Arthritis & Rheumatism, 63(10): 31263135


Association of age with sperm DNA fragmentation
Aumento del daño en el DNA espermatico en varones mayores de 40 años.
Horta F, Madariaga M, Garcia A, Härtel S & Smith R
Revista Médica de Chile, 139: 306-312
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Location matters: the endoplasmic reticulum and protein trafficking in dendrites.
Ramirez O, S Härtel & Couve A
Biological Reseach 44: 17-23
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High-frequency Field Stimulation of Primary Neurons Enhances Ryanodine Receptor-mediated Ca2+ Release and Generates Hydrogen Peroxide, which Jointly Stimulate NF-kB Activity
Riquelme D, Alvarez A, Leal N, Adasme T, Espinoza I, Valdés JA, Troncoso N, Härtel S, Hidalgo J, Hidalgo C, & MA Carrasco
Antioxid Redox Signal. 14(7):1245-59
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- 2010 -


Confined Displacement Algorithm Determines True and Random Colocalization in Fluorescence Microscopy
Ramirez O, García A, Rojas R, Couve A & S Härtel
Journal of Microscopy, Sep 1;239(3):173-83
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The action of sphingomyelinase in lipid monolayers as revealed by microscopic image analysis
Fanani ML, Härtel S, De Tullio L, Jara J, Olmos F, Oliveira R & B Maggio
Biochimica et Biophysica Acta (BBA) - Biomembranes Volume 1798, Issue 7, 1309-1323
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Planar cell polarity signalling regulates cell adhesion properties in progenitors of the zebrafish laterality organ.
Oteiza P, Koeppen M, Krieg M, Pulgar E, Farias C, Melo C, Preibisch S, Müller D, Tada M, Hartel S, Heisenberg CP, & M Concha
Development, 137:3459-68
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Visualization of inositol 1,4,5-trisphosphate receptors on the nuclear envelope outer membrane by deep etching electron microscopy.
Cárdenas C, Escobar M, García A, Osorio-Reich M, Härtel S, Foskett JK, Franzini-Armstrong C.
J Struct Biol. 171 (3):372-381
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- 2009 -


Lipid domains in giant unilamellar vesicles and their correspondence with equilibrium thermodynamic phases: A quantitative fluorescence microscopy imaging approach.
Fidorra M, Garcia A, Ipsen J, Härtel S & L Bagatolli.
Biochimica et Biophysica Acta (BBA) - Biomembranes, 1788(10):2142-9. [Epub 2009 Aug 21]
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Segmentación de Objetos en Imágenes de Microscopia mediante Contornos Activos con Adaptabilidad Topológica.
Felipe Olmos, Memoria para: Ingeniero Civil en Computación, F-Med/FCFM, Universidad de Chile, Santiago, Chile.
Tutores: S Hartel (F-Med) / A Maass (CMM/FCFM) / N Hitschfeld (DCC/FCFM)
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Dendritic Assembly of Heteromeric Gabab Receptor Subunits in Hippocampal Neurons.
Ramirez O, Vidal R, Tello J, Vargas K, Kindler S, Härtel S & A Couve.
J Biol Chem. May 8;284(19):13077-85. [Epub 2009 Mar 10]
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SMase-induced domain growth and shape relaxation driven by a rate-dependent, out-of-equilibrium, compositional change.
Fanani ML, De Tullio L, Härtel S, Jara J & B Maggio.
Biophysical Journal 96, pp: 67-76. [Epub 2008 Oct 10].
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NADPH Oxidase and Hydrogen Peroxide Mediate Insulin-induced Calcium Increase in Skeletal Muscle Cells.
Espinosa A, Garcia A, Härtel S, Hidalgo C & E Jaimovich.
JBC. 284, pp:2568-2575. [Epub 2008 Nov 20]
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- 2008 -


Changes in mitochondrial dynamics during ceramide-induced cardiomyocyte early apoptosis.
Parra V, Eisner V, Chiong M, Criollo A, Moraga F, Garcia A, Härtel S, Jaimovich E, Zorzano A, Hidalgo C & S Lavandero.
Cardiovasc Res. 77(2), pp:387-97. [Epub 2007 Oct 4]
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Exercise and tachycardia increase NADPH oxidase and ryanodine receptor-2 activity: possible role in cardioprotection.
Sánchez G, Escobar M, Pedrozo Z, Macho P, Domenech R, Härtel S, Hidalgo C, Donoso P.
Cardiovasc Res., 77(2), pp:380-6. [Epub 2007 Sep 18]
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- 2007 -


Marlin-1 and conventional kinesin link GABAB receptors to the cytoskeleton and regulate receptor transport.
Vidal RL., Ramírez OA., Sandoval L., Koenig-Robert R., Härtel S. and Couve A.
Molecular and Cellular Neuroscience, 35(3):501-12.
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The initial surface composition and topography modulate sphingomyelinase-driven sphingomyelin to ceramide conversion in lipid monolayers.
De Tullio L., Maggio B., Härtel S., Jara J. & Fanani ML.
Cell Biochemistry and Biophysics 47, pp:169177.
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3D Morpho-Topological Analysis of Asymmetric Neuronal Morphogenesis in Developing Zebrafish. Computational Modelling of Objects Represented in Images. Fundamentals, Methods and Applications.
S. Härtel, J. Jara, C.G. Lemus, M.L. Concha
Ed. João Manuel Tavares & Jorge Nata, Taylor and Francis Group, ISBN: 9780415433495, pp: 215-220.
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- 2006 -


Contornos activos en tres dimensiones para la segmentación de estructuras biológicas.
Jorge Jara Wilde, Proyecto de Titulo: INGENIERO CIVIL EN INFORMÁTICAINFORMÁTICA, Universidad Austral de Chile, Valdivia, Chile.
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Phosphatase Activity in Ectomycorrhiza Fungi: A Comparative Study Between a Colorimetric and a Microscope-Based Method.
Alvarez M., Godoy R., Gieseke A., & Härtel S.
Biology & Fertility of Soils 42(6), pp: 561-568.
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ATP steal between cation pumps: a mechanism linking Na+ influx to the onset of necrotic Ca2+ overload.
Castro J, Ruminot I, Porras OH, Flores CM, Hermosilla T, Verdugo E, Venegas F, Hartel S, Michea L & Barros LF.
Cell Death & Differentiation 13, pp:16751685.
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- 2005 -


Shape Transitions and Lattice Structuring of Ceramide-Enriched Domains Generated by Sphingomyelinase in Lipid Monolayers.
Härtel S., Fanani M.L., & Maggio B.
Biophysical Journal 88(1), pp: 287-304.
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Anatomical-physiological determination of surface bound phosphatase activity in ectomycorrhiza of Nothofagus obliqua based on image processed confocal fluorescence microscopy.
Alvarez M., Godoy R., Heyser W., & Härtel S.
Soil Biology and Biochemistry 37(1), pp: 125-132.
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Identification and classification of di- and triploid erythrocytes by multi-parameter image analysis: a new method for the quantification of triploidization rates in rainbow trout (Oncorhynchus mykiss).
Härtel S., Rojas R., Räth C., Guarda M.I., & Goicoechea O.
Archivos de Medicina Veterinaria XXXVII (2), pp: 147-154.
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- 2004 -


Surface bound phosphatase activity in living hyphae of ectomycorrhizal fungi of Nothofagus obliqua.
Alvarez M., Godoy R., Heyser W., & Härtel S.
Mycologia 96(3), pp: 479 - 487.
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Ultraviolet exposure of thymocytes: wavelength selective inhibition and induction of apoptosis.
Ojeda F., Guarda M.I., Lovengreen C., Hidalgo A., Folch H., Härtel S., & Maldonado C.
International Journal of Radiation Biology 80(6), pp: 445-450.
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- 2003 -


Staurosporine-Induced Apoptosis in Human Cornea Epithelial Cells In Vitro.
Härtel S., Zorn-Kruppa M., Tykhonova S., Alajuuma P., Engelke M., & Diehl H.
Cytometry 08, pp: 15-23.
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Ceramide Modulates the Lipid Membrane Organization at Molecular and Supramolecular Levels.
Carrer D., Härtel S., & Maggio B.
Chemisty and Physics of Lipids 122, pp: 147-152.
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New Perspectives in the Determination of phoshatase activity in ectomycorrhiza of Nothofagus obliqua in forests of southern Chile.
Alvarez M., Härtel S. Godoy R., & Heyser W.
Gayana 60(1), pp: 41-46.
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- 2002 -


The Susceptibility of Non-UV Fluorescent Membrane Dyes to Dynamical Properties of Lipid Membranes.
Härtel S., Tykhonova S., Haas M., & Diehl H.
Journal of Fluorescence, 12, pp: 465-479.
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Bidirectional Control of Sphingomyelinase Activity and Surface Topography in Lipid Monolayers
Fanani M., Härtel S., Oliveira R., & Maggio B.
Biophysical Journal 83(6), pp: 3416-3424.
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Kinetics of apoptotic markers in exogeneously induced apoptosis of EL4 cells.
Jessel R., Haertel S., Socaciu C., Tykhonova S., & Diehl H.
Journal of Cellular and Molecular Medicine 6(1), pp: 82-92.
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- 2000 -


Carotenoids in 1,2-dipalmitoyl-sn-glycero-3-phosphoryl-choline liposomes: incorporation and effects on phase transition and vesicle size.
Socaciu C., Jessel R., Härtel S., & Diehl H.
Journal of Medical Biochemistry 4(2), pp: 71-82.
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- 1998 -


Methyl-b-Cyclodextrins and Liposomes as Water-Soluble Carriers for Cholesterol Incorporation into Membranes and Its Evaluation by a Microenzymatic Fluorescence Assay and Membrane Fluidity-Sensitive Dyes.
Härtel S., Diehl H., & Ojeda F.
Analytical Biochemistry 258(2), pp: 277-284.
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Cholesterol induced variations of membrane dynamics related to the induction of apoptosis in mouse thymocytes.
Härtel S., Ojeda F., & Diehl H.
International Journal of Radiation Biology 74(5), pp: 607-615.
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