Results 11 to 20 of about 4,557 (114)

Enhancing Dopamine Accumulation in Secretory Vesicles of PC12 Cells: Mechanisms, Applications and Limitations. [PDF]

J Neurochem
Schematic representation of a large dense‐core vesicle in PC12 cells highlighting its main molecular organization. The diagram illustrates the presence of membrane transporters, proton pumps and intravesicular matrix proteins that establish the electrochemical gradients required for neurotransmitter uptake, vesicle acidification and efficient storage ...
Socas-Pérez N, Borges R, Machado JD.
europepmc   +2 more sources

Chromaffin Versus Platelet Granules: What We Have Learned From Chromaffin Cells for Human Studies. [PDF]

J Neurochem
Chromaffin cells and platelets both utilize exocytosis to release biogenic amines stored within large dense‐core vesicles—specifically chromaffin granules (epinephrine) and δ‐granules (serotonin). While the chromaffin cell is the foundational model for studying the secretory pathway, platelets offer a highly accessible human cell source for clinical ...
Borges R.
europepmc   +2 more sources

Chromogranin A and Vesicular Monoamine Transporter 2 Immunolocalization in Protein Bodies of Human Locus Coeruleus Neurons

Ultrastructural Pathology, 2013
Our previous histochemical and ultrastructural studies have identified, in human catecholamine neurons, abundant spherical acidophilic protein bodies (pb), which originate from regular mitochondria, retaining their double membrane. In locus coeruleus (LC) neurons, pb have somatodendritic distribution and are unequivocal storage vesicles for ...
Kloukina-Pantazidou, I., Chrysanthou-Piterou, M., Havaki, S., Issidorides, M.R.   +3 more
openaire   +3 more sources

Vesicular monoamine transporter protein expression correlates with clinical features, tumor biology, and MIBG avidity in neuroblastoma: a report from the Children’s Oncology Group [PDF]

European Journal of Nuclear Medicine and Molecular Imaging, 2015
Vesicular monoamine transporters 1 and 2 (VMAT1 and VMAT2) are thought to mediate MIBG uptake in adult neuroendocrine tumors. In neuroblastoma, the norepinephrine transporter (NET) has been investigated as the principal MIBG uptake protein, though some tumors without NET expression concentrate MIBG.
Temple, William, Mendelsohn, Lori, Kim, Grace E, Nekritz, Erin, Gustafson, W Clay, Lin, Lawrence, Giacomini, Kathy, Naranjo, Arlene, Van Ryn, Collin, Yanik, Gregory A, Kreissman, Susan G, Hogarty, Michael, Matthay, Katherine K, DuBois, Steven G   +13 more
openaire   +4 more sources

Engineering of a mammalian VMAT2 for cryo-EM analysis results in non-canonical protein folding

Nature Communications
Vesicular monoamine transporter 2 (VMAT2) belongs to the major facilitator superfamily (MFS), and mediates cytoplasmic monoamine packaging into presynaptic vesicles. Here, we present two cryo-EM structures of VMAT2, with a frog VMAT2 adopting a canonical
Ying Lyu, Chunting Fu, Haiyun Ma, Zhaoming Su, Ziyi Sun, Xiaoming Zhou   +5 more
doaj   +1 more source

Multimodal Imaging Reveals Rapid Catecholamine Uptake and Release by Neutrophils

Advanced Science, EarlyView.
We show that immune cells (neutrophils) synthesize, uptake, and store catecholamine neurotransmitters such as dopamine or adrenaline. They also release them in response to specific stimuli (serotonin), which we directly visualize using fluorescent nanosensors. We further demonstrate that catecholamines affect neutrophil functions (NETosis) and platelet
Jennifer Mohr, Anne Schmitz, Meshkat Dinarvand, Franziska Wulfert, Sangeetha Shankar, Bjoern F. Hill, Michael Wojak, Juliana Gretz, Marie Britz, Elsa Neubert, Magdalena Shumanska, Sofia Kaushik, Linda Kartaschew, Ivan Bogeski, James Daniel, Sebastian Jung, Johannes Eble, Guido Wabnitz, Luise Erpenbeck, Sebastian Kruss   +19 more
wiley   +1 more source

The β integrin modulates serotonin sensitivity via NPxY motifs to regulate egg laying and mechanosensation behaviors in Caenorhabditis elegans

Developmental Dynamics, EarlyView.
Abstract Background Integrin is an αβ heterodimeric receptor to the extracellular matrix; its binding to the matrix recruits focal adhesions to two NPxY motifs, the tyrosine phosphorylation sites in the cytoplasmic domain. Studies found that replacing tyrosines (Y) with phenylalanines (F) in the motif of β1 integrin displayed little developmental or ...
Josh Haram Bumm, Daniel Dogeon Lee, Zhongqiang Qiu, Angela Haeun Choi, Meghana Kolluri, Michael J. Olsen, Lianzijun Wang, Myeongwoo Lee   +7 more
wiley   +1 more source

Data‐Driven Insights into Hyperkinetic Disorders in Neurodevelopmental Syndromes and Epileptic Encephalopathies

Movement Disorders Clinical Practice, EarlyView.
Abstract Background Childhood‐onset hyperkinetic movement disorders occur in a range of genetic conditions. Recently, there has been an increase in recognition of hyperkinetic movement disorders, mainly dystonia, chorea and dyskinesia, with monogenic conditions associated with neurodevelopmental delay (NDD) and also with developmental and epileptic ...
Hugo Morales‐Briceño, Shekeeb S. Mohammad, Rajeshwar Reddy Angiti, Velda Han, Michel Tchan, Russell C. Dale, Victor S.C. Fung   +6 more
wiley   +1 more source

Tracking Genetic Parkinson's Disease with Molecular Imaging: A Systematic Review

Movement Disorders Clinical Practice, EarlyView.
Abstract Background Parkinson's disease (PD) is a worldwide, complex neurodegenerative disorder influenced by both genetic and environmental factors. Around 15–20% of PD cases are linked to genetic mutations, providing insights into the disease's pathogenesis.
Chiara Meneghini, Luca Gallo, Arianna Sala, Enza Maria Valente, Micol Avenali, Silvia Paola Caminiti   +5 more
wiley   +1 more source

Dopamine: The Essential Bridge Mediating Obstructive Sleep Apnea and Hippocampus‐Dependent Learning and Memory Impairments

World Journal of Otorhinolaryngology - Head and Neck Surgery, EarlyView.
ABSTRACT Obstructive sleep apnea is a clinical syndrome that triggers a series of pathophysiologic changes, including disturbed sleep architecture, chronic intermittent hypoxia and hypercapnia, and ultimately severe cognitive dysfunction. The hippocampus plays a key role in various cognitive processes such as learning and memory.
Rui Fan, Tao Li, Yan Yan
wiley   +1 more source