Article
Biochemistry & Molecular Biology
Maria C. Maldifassi, Fanny Momboisse, Maria J. Guerra, Alex H. Vielma, Jaime Maripillan, Ximena Baez-Matus, Carolina Flores-Munoz, Barbara Cadiz, Oliver Schmachtenberg, Agustin D. Martinez, Ana M. Cardenas
Summary: This study proposes a novel mechanism for Panx1 channel activation through functional interactions with the highly calcium-permeable alpha 7 nicotinic acetylcholine receptor (nAChR), and demonstrates the physiological relevance of Panx1 channels and P2X7 receptors in neurosecretion.
JOURNAL OF NEUROCHEMISTRY
(2021)
Article
Neurosciences
Ana Fernandez, Carmen Martinez-Ramirez, Ana Gomez, Antonio M. G. de Diego, Luis Gandia, Maria Jose Casarejos, Antonio G. Garcia
Summary: From a pathogenic perspective, Huntington's disease (HD) is considered a synaptopathy with alterations in neurotransmitter release and catecholamine secretion in chromaffin cells (CCs). This study explored the impact of mitochondrial deficits on CCs in a mouse model of HD. The results showed fragmented mitochondria, oxidative stress, decreased respiration and ATP levels, mitochondrial depolarization, and impaired catecholamine release and calcium channel currents. These alterations were observed at an early disease stage, suggesting that mitochondrial dysfunction is a primary event in HD pathogenesis.
NEUROBIOLOGY OF DISEASE
(2023)
Article
Biochemistry & Molecular Biology
Tzu-Kang Lin, Chi-Feng Hung, Jing-Ru Weng, Ting-Yang Hsieh, Su-Jane Wang
Summary: This study found that Kaempferol 3-rhamnoside (KR) can inhibit 4-aminopyridine (4-AP)-evoked glutamate release. The inhibitory effect of KR is linked to the omission of external Ca2+ or the depletion of glutamate in synaptic vesicles, as well as the suppression of P/Q-type Ca2+ channel activity. Additionally, KR reduces the increase in Ca2+ concentration and the phosphorylation of CaMKII and its substrate synapsin I.
Article
Multidisciplinary Sciences
Willy Carrasquel-Ursulaez, Ignacio Segura, Ignacio Diaz-Franulic, Felipe Echeverria, Yenisleidy Lorenzo-Ceballos, Nicolas Espinoza, Maximiliano Rojas, Jose Antonio Garate, Eduardo Perozo, Osvaldo Alvarez, Fernando D. Gonzalez-Nilo, Ramon Latorre
Summary: This study demonstrates that two arginines in the transmembrane segment S4 function as the gating charges of BK channels, and the energy landscape of gating particles is tuned by a network of salt bridges in the voltage sensor domain (VSD). Unlike Kv channels, the charge movement in BK seems limited to a small displacement of the guanidinium moieties of R210 and R213.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Neurosciences
Andrei N. Tsentsevitsky, Eduard F. Khaziev, Irina V. Kovyazina, Alexey M. Petrov
Summary: The study found that GIRK channels can regulate the timing of neurotransmitter release and act as a positive modulator of synaptic vesicle exocytosis in frog motor nerve terminals, partially through L-type calcium channels. Additionally, GIRK channels are key players in the feedback control of neurotransmitter release by muscarinic acetylcholine receptors.
Review
Biochemistry & Molecular Biology
Dorina Zoephel, Chantal Hof, Annette Lis
Summary: Aging is an unstoppable process that affects every cell of the organism, especially the changes in Ca2+ signaling in immune cells which may profoundly impact the development of age-related diseases.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Neurosciences
Maddalena Comini, Juan Sierra-Marquez, Gustavo Guzman, Arne Franzen, Antje Willuweit, Istvan Katona, Patricia Hidalgo, Christoph Fahlke, Raul E. Guzman
Summary: This study investigates the role of two Clcn3 splice variants, ClC-3b and ClC-3c, in granular exocytosis and catecholamine accumulation in adrenal chromaffin cells. The findings show that ClC-3c regulates catecholamine accumulation and contributes to the formation of readily releasable vesicles, while ClC-3b has low efficiency in vesicle priming.
JOURNAL OF NEUROSCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Keke Hu, Kim Long Le Vo, Fan Wang, Xin Zhang, Chaoyi Gu, Ning Fang, Nhu T. N. Phan, Andrew G. Ewing
Summary: In multicellular organisms, cells communicate through chemical signals, and recent research has discovered the important role of exosomes, which carry cell-dependent molecules, in cellular communication. This study uses amperometry with microelectrodes to monitor the real-time release of single exosomes from living cells and differentiate them from other extracellular vesicles. The results reveal that exosomes released by neuroendocrine cells contain catecholamine transmitters, challenging the traditional view of chemical communication and providing new insights into the molecular biology of exosomes in the neuroendocrine and central nervous systems.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Physiology
Ilnar Shaidullov, Elizaveta Ermakova, Aisylu Gaifullina, Anna Mosshammer, Aleksey Yakovlev, Thomas M. Weiger, Anton Hermann, Guzel Sitdikova
Summary: This study explored the effects of acetic acid on BK channels in GH3 rat pituitary tumor cells, demonstrating that acetic acid activates BK channels and influences membrane hyperpolarization, calcium oscillations, and growth hormone release in a pH-dependent manner. The findings suggest that acetic acid has specific cellular actions that contribute to its overall effects on cell physiology and secretion.
PFLUGERS ARCHIV-EUROPEAN JOURNAL OF PHYSIOLOGY
(2021)
Article
Neurosciences
Che-Wei Chang, Yu-Tien Hsiao, Meyer B. Jackson
Summary: This study demonstrates that Synaptophysin (Syp) and synaptogyrin (Syg) play a regulatory role in dense-core vesicle function at various stages, affecting fusion initiation, mode selection between full fusion and kiss-and-run, and influencing the dynamics of both initial and late-stage fusion pores. The transmembrane domain (TMD) of Syp influences small initial fusion pores, while the C-terminal domain influences large late-stage fusion pores, possibly through an interaction with dynamin.
JOURNAL OF NEUROSCIENCE
(2021)
Article
Neurosciences
Amanda Jimenez-Pompa, Sara Sanz-Lazaro, Arik J. Hone, Lola Rueda-Ruzafa, Jose Medina-Polo, Carmen Gonzalez-Enguita, Jesus Blazquez, Cristobal de los Rios, J. Michael McIntosh, Almudena Albillos
Summary: The study found that varenicline increased the exocytosis of secretory vesicles in human and rat chromaffin cells, especially in the presence of nicotine. These results should be taken into consideration when using varenicline in nicotine addiction therapies.
Article
Environmental Sciences
Yeong-Kyeong Kim, Yunkyung Eom, Hongryul Yoon, Yoonji Lee, Sung Hoon Lee
Summary: Humans are exposed to the common carcinogen benzo[a]pyrene (BaP) through ingestion and inhalation. BaP accumulates in the brain and causes toxicity, leading to impairments in learning and memory, increased anxiety behavior, and neuronal death. This study investigates the toxicity of BaP at presynaptic terminals, observing that it inhibits Ca2+ entry and suppresses synaptic vesicle exocytosis. These findings provide insights into the neurotoxicity of BaP and contribute to the evaluation of the risk it poses.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2023)
Article
Biochemistry & Molecular Biology
Vladislav Chubinskiy-Nadezhdin, Svetlana Semenova, Valeria Vasileva, Alla Shatrova, Natalia Pugovkina, Yuri Negulyaev
Summary: Endometrial mesenchymal stem cells (eMSCs) have the ability to differentiate into different cell types and are influenced by mechanical forces in their microenvironment. This study identified Piezo1 proteins as mechanosensitive channels in the plasma membrane of eMSCs, which transduce mechanical stimuli into intracellular signaling pathways. The influx of Ca2+ triggered by Piezo1 activity is regulated by store-operated Ca2+ entry (SOCE) through the ORAI1 channel and STIM1/STIM2 Ca2+ sensors. Activation of Piezo1 or SOCE does not cause cytotoxicity in eMSCs but affects their migratory capacity and cell proliferation. This finding suggests that Piezo1 and SOCE play important roles in the regulation of intracellular calcium, which influences the migratory activity and regenerative potential of eMSCs.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Biochemistry & Molecular Biology
Anna Chang, Chi-Feng Hung, Pei-Wen Hsieh, Horng-Huey Ko, Su-Jane Wang
Summary: Eupafolin exerts its neuroprotective effects by inhibiting glutamate release, reducing intracellular calcium levels, and disrupting the CaMKII/synapsin I pathway.
BIOMOLECULES & THERAPEUTICS
(2021)
Article
Cell Biology
Aleksandr P. Cherkashin, Olga A. Rogachevskaja, Natalia Kabanova, Polina D. Kotova, Marina F. Bystrova, Stanislav S. Kolesnikov
Summary: This study reveals the regulation mechanism of voltage-gated calcium channels (VG) and exocytosis in Type III taste bud cells. The results show that the depolarization-induced Ca2+ signals and serotonin release in Type III cells are not significantly affected by varying extracellular Ca2+. The study also suggests the involvement of extracellular Ca2+-sensing receptors in regulating VG Ca2+ entry and serotonin release.
Review
Biochemistry & Molecular Biology
Ana Maria Cardenas, Fernando D. Marengo
JOURNAL OF NEUROCHEMISTRY
(2016)
Article
Neurosciences
Jose Moya-Diaz, Yanina D. Alvarez, Mauricio Montenegro, Lucas Bayones, Ana V. Belingheri, Arlek M. Gonzalez-Jamett, Ana M. Cardenas, Fernando D. Marengo
FRONTIERS IN CELLULAR NEUROSCIENCE
(2016)
Review
Physiology
Fernando D. Marengo, Ana M. Cardenas
PFLUGERS ARCHIV-EUROPEAN JOURNAL OF PHYSIOLOGY
(2018)
Article
Chemistry, Analytical
Manuela Gabriel, Jose Moya-Diaz, Luciana I. Gallo, Fernando D. Marengo, Laura C. Estrada
METHODS AND APPLICATIONS IN FLUORESCENCE
(2018)
Article
Physiology
A. E. Perez Bay, A. V. Belingheri, Y. D. Alvarez, F. D. Marengo
Article
Cell Biology
Ana Maria Cardenas, Fernando D. Marengo
CELLULAR AND MOLECULAR NEUROBIOLOGY
(2010)
Article
Multidisciplinary Sciences
Yanina D. Alvarez, Ana Veronica Belingheri, Andres E. Perez Bay, Scott E. Javis, H. William Tedford, Gerald Zamponi, Fernando D. Marengo
Article
Physiology
Jose Moya-Diaz, Lucas Bayones, Mauricio Montenegro, Ana M. Cardenas, Henner Koch, Atsushi Doi, Fernando D. Marengo
Article
Radiology, Nuclear Medicine & Medical Imaging
Roxana Campisi, Fernando D. Marengo
CURRENT CARDIOVASCULAR IMAGING REPORTS
(2019)
Review
Cardiac & Cardiovascular Systems
Roxana Campisi, Fernando D. Marengo
CARDIOVASCULAR DIAGNOSIS AND THERAPY
(2017)
Article
Cell Biology
Andres E. Perez Bay, Lorena I. Ibanez, Fernando D. Marengo
AMERICAN JOURNAL OF PHYSIOLOGY-CELL PHYSIOLOGY
(2007)
Review
Cardiac & Cardiovascular Systems
Roxana Campisi, Fernando D. Marengo
CARDIOVASCULAR DRUG REVIEWS
(2007)
Article
Cell Biology
FD Marengo
Article
Biophysics
FD Marengo, JR Monck
BIOPHYSICAL JOURNAL
(2003)
Article
Biochemistry & Molecular Biology
Pei-Yang Gao, Ya-Nan Ou, Yi-Ming Huang, Zhi-Bo Wang, Yan Fu, Ya-Hui Ma, Qiong-Yao Li, Li-Yun Ma, Rui-Ping Cui, Yin-Chu Mi, Lan Tan, Jin-Tai Yu
Summary: Liver function may play a role in the progression of Alzheimer's disease. The study found that as AD progressed, certain liver function markers increased while others decreased. The relationship between liver function and CSF AD biomarkers indicates a potential mediation effect on cognition.
JOURNAL OF NEUROCHEMISTRY
(2024)