Search Results - "Alex Vielma"

Prolonged Photobiomodulation with Deep Red Light Mitigates Incipient Retinal Deterioration in a Mouse Model of Type 2 Diabetes by Opazo, Gabriela, Tapia, Felipe, Díaz, Alejandra, Vielma, Alex H., Schmachtenberg, Oliver

“…Diabetic retinopathy is a prevalent complication of type 2 diabetes mellitus, characterized by progressive damage to the retinal structure and function…”
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Glucagon Increases Retinal Rod Bipolar Cell Inhibition Through a D1 Dopamine Receptor-Dependent Pathway That Is Altered After Lens-Defocus Treatment in Mice by Tapia, Felipe, Peñaloza, Valentín, Silva-Olivares, Francisco, Sotomayor-Zárate, Ramón, Schmachtenberg, Oliver, Vielma, Alex H

“…Members of the secretin/glucagon family have diverse roles in retinal physiological and pathological conditions. Out of them, glucagon has been associated with…”
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Electrophysiological fingerprints of OFF bipolar cells in rat retina by Vielma, Alex H., Schmachtenberg, Oliver

“…Retinal bipolar cells (BCs) divide photoreceptor output into different channels for the parallel extraction of temporal and chromatic stimulus properties. In…”
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Nitric oxide signaling in the retina: What have we learned in two decades? by Vielma, Alex H, Retamal, Mauricio A, Schmachtenberg, Oliver

“…Abstract Two decades after its first detection in the retina, nitric oxide (NO) continues to puzzle visual neuroscientists. While its liberation by…”
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Physiological assessment of high glucose neurotoxicity in mouse and rat retinal explants by Calbiague, Víctor M., Vielma, Alex H., Cadiz, Bárbara, Paquet‐Durand, Francois, Schmachtenberg, Oliver

“…One of the tissues of the central nervous system most affected by diabetes is the retina. Despite a growing understanding of the biochemical processes involved…”
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The interplay between α7 nicotinic acetylcholine receptors, pannexin‐1 channels and P2X7 receptors elicit exocytosis in chromaffin cells by Maldifassi, María C., Momboisse, Fanny, Guerra, María J., Vielma, Alex H., Maripillán, Jaime, Báez‐Matus, Ximena, Flores‐Muñoz, Carolina, Cádiz, Bárbara, Schmachtenberg, Oliver, Martínez, Agustín D., Cárdenas, Ana M.

“…Pannexin‐1 (Panx1) forms plasma membrane channels that allow the exchange of small molecules between the intracellular and extracellular compartments, and are…”
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Cannabinoid Signaling Selectively Modulates GABAergic Inhibitory Input to OFF Bipolar Cells in Rat Retina by Vielma, Alex H, Tapia, Felipe, Alcaino, Alejandro, Fuenzalida, Marco, Schmachtenberg, Oliver, Chávez, Andrés E

“…In the mammalian retina, cannabinoid type 1 receptors (CB1Rs) are well-positioned to alter inhibitory synaptic function from amacrine cells and, thus, might…”
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Autocrine activation of P2X7 receptors mediates catecholamine secretion in chromaffin cells by Maldifassi, María Constanza, Guerra‐Fernández, María José, Ponce, Daniela, Alfonso‐Bueno, Samuel, Maripillán, Jaime, Vielma, Alex H., Báez‐Matus, Ximena, Marengo, Fernando D., Acuña‐Castillo, Claudio, Sáez, Juan C., Martínez, Agustín D., Cárdenas, Ana M.

“…Background and Purpose ATP is highly accumulated in secretory vesicles and secreted upon exocytosis from neurons and endocrine cells. In adrenal chromaffin…”
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Nitric oxide modulates the temporal properties of the glutamate response in type 4 OFF bipolar cells by Vielma, Alex H, Agurto, Adolfo, Valdés, Joaquín, Palacios, Adrián G, Schmachtenberg, Oliver

“…Nitric oxide (NO) is involved in retinal signal processing, but its cellular actions are only partly understood. An established source of retinal NO are NOACs,…”
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Electrical coupling between A17 cells enhances reciprocal inhibitory feedback to rod bipolar cells by Elgueta, Claudio, Leroy, Felix, Vielma, Alex H., Schmachtenberg, Oliver, Palacios, Adrian G.

“…A17 amacrine cells are an important part of the scotopic pathway. Their synaptic varicosities receive glutamatergic inputs from rod bipolar cells (RBC) and…”
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Publisher Correction: Electrical coupling between A17 cells enhances reciprocal inhibitory feedback to rod bipolar cells by Elgueta, Claudio, Leroy, Felix, Vielma, Alex H., Schmachtenberg, Oliver, Palacios, Adrian G.

“…A correction to this article has been published and is linked from the HTML and PDF versions of this paper. The error has been fixed in the paper…”
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Non-canonical type 1 cannabinoid receptor signaling regulates night visual processing in the inner rat retina by Estay, Sebastián F., Morales-Moraga, Camila, Vielma, Alex H., Palacios-Muñoz, Angelina, Chiu, Chiayu Q., Chávez, Andrés E.

“…Type 1 cannabinoid receptors (CB1Rs) are expressed in major retinal neurons within the rod-pathway suggesting a role in regulating night visual processing, but…”
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The elusive crypt olfactory receptor neuron: evidence for its stimulation by amino acids and cAMP pathway agonists by Vielma, Alex, Ardiles, Alvaro, Delgado, Luz, Schmachtenberg, Oliver

“…Crypt olfactory receptor neurons (ORNs) are a third type of chemosensory neuron along with ciliated and microvillous ORNs in the olfactory epithelium of…”
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Acetylcholine induces GABA release onto rod bipolar cells through heteromeric nicotinic receptors expressed in A17 amacrine cells by Elgueta, Claudio, Vielma, Alex H, Palacios, Adrian G, Schmachtenberg, Oliver

“…Acetylcholine (ACh) is a major retinal neurotransmitter that modulates visual processing through a large repertoire of cholinergic receptors expressed on…”
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On Biophysical Properties and Sensitivity to Gap Junction Blockers of Connexin 39 Hemichannels Expressed in HeLa Cells by Vargas, Anibal A, Cisterna, Bruno A, Saavedra-Leiva, Fujiko, Urrutia, Carolina, Cea, Luis A, Vielma, Alex H, Gutierrez-Maldonado, Sebastian E, Martin, Alberto J M, Pareja-Barrueto, Claudia, Escalona, Yerko, Schmachtenberg, Oliver, Lagos, Carlos F, Perez-Acle, Tomas, Sáez, Juan C

“…Although connexins (Cxs) are broadly expressed by cells of mammalian organisms, Cx39 has a very restricted pattern of expression and the biophysical properties…”
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Retinal photoreceptor arrangement, SWS1 and LWS opsin sequence, and electroretinography in the South American marsupial Thylamys elegans (Waterhouse, 1839) by Palacios, Adrián G., Bozinovic, Francisco, Vielma, Alex, Arrese, Catherine A., Hunt, David M., Peichl, Leo

“…We studied the retinal photoreceptors in the mouse opossum Thylamys elegans, a nocturnal South American marsupial. A variety of photoreceptor properties and…”
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The GABAergic system in the retina of neonate and adult Octodon degus, studied by immunohistochemistry and electroretinography by Delgado, Luz M., Vielma, Alex H., Kähne, Thilo, Palacios, Adrián G., Schmachtenberg, Oliver

“…In the vertebrate retina, gamma‐aminobutyric acid (GABA) mediates inhibitory processes that shape the visual response and is also thought to have neurotrophic…”
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Nitric oxide amplifies the rat electroretinogram by Vielma, Alex, Delgado, Luz, Elgueta, Claudio, Osorio, Rodrigo, Palacios, Adrián G., Schmachtenberg, Oliver

“…It is well established that nitric oxide (NO) participates in retinal signal processing through stimulation of its receptor enzyme, soluble guanylyl cyclase…”
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Retinal photoreceptors of two subterranean tuco-tuco species (Rodentia, Ctenomys): Morphology, topography, and spectral sensitivity by Schleich, Cristian E., Vielma, Alex, Glösmann, Martin, Palacios, Adrian G., Peichl, Leo

“…Traditionally, vision was thought to be useless for animals living in dark underground habitats, but recent studies in a range of subterranean rodent species…”
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Spectral sensitivities of photoreceptors and their role in colour discrimination in the green-backed firecrown hummingbird (Sephanoides sephaniodes) by Herrera, Gonzalo, Zagal, Juan Cristóbal, Diaz, Marcelo, Fernández, Maria José, Vielma, Alex, Cure, Michel, Martinez, Jaime, Bozinovic, Francisco, Palacios, Adrián G

“…We studied the photopic spectral sensitivity in the green-backed firecrown, Sephanoides sephaniodes, a South American hummingbird, and its possible ecological…”
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