Protein aggregation containing beta-amyloid, alpha-synuclein and hyperphosphorylated tau in cultured cells of hippocampus, substantia nigra and locus coeruleus after rotenone exposure

<p>Abstract</p> <p>Background</p> <p>Protein aggregates containing alpha-synuclein, beta-amyloid and hyperphosphorylated tau are commonly found during neurodegenerative processes which is often accompanied by the impairment of mitochondrial complex I respiratory chain and dysfunction of cellular systems of protein degradation. In view of this, we aimed to develop an <it>in vitro </it>model to study protein aggregation associated to neurodegenerative diseases using cultured cells from hippocampus, locus coeruleus and substantia nigra of newborn Lewis rats exposed to 0.5, 1, 10 and 25 nM of rotenone, which is an agricultural pesticide, for 48 hours.</p> <p>Results</p> <p>We demonstrated that the proportion of cells in culture is approximately the same as found in the brain nuclei they were extracted from. Rotenone at 0.5 nM was able to induce alpha-synuclein and beta amyloid aggregation, as well as increased hyperphosphorylation of tau, although high concentrations of this pesticide (over 1 nM) lead cells to death before protein aggregation. We also demonstrated that the 14kDa isoform of alpha-synuclein is not present in newborn Lewis rats.</p> <p>Conclusion</p> <p>Rotenone exposure may lead to constitutive protein aggregation <it>in vitro</it>, which may be of relevance to study the mechanisms involved in idiopathic neurodegeneration.</p

pSESYNTH project: Community mobilization for a multi-disciplinary paleo database of the Global South

How to enhance paleoscientific research, collaboration and application in the Global South? The INQUA-funded multi-year pSESYNTH project envisions the first multi-disciplinary Holocene paleo database through a collaborative vision for past human–environmental systems in the Global South, and their future sustainability.Fil: Kulkarni, Charuta. Independent Researcher; IndiaFil: Jara, I. A.. Universidad de Tarapacá; ChileFil: Chevalier, Merari. Rheinische Friedrich-wilhelms-universität Bonn; AlemaniaFil: Isa, A. A.. Ahmadu Bello University; NigeriaFil: Alinezhad, K.. Kiel University; AlemaniaFil: Brugger, S. O.. University of Basel; SuizaFil: Bunbury, M. M. E.. James Cook University; AustraliaFil: Cordero Oviedo, C.. University of Toronto; CanadáFil: Courtney Mustaphi, C.. University of Basel; SuizaFil: Echeverría Galindo, P.. Technische Universität Braunschweig; AlemaniaFil: Ensafi Moghaddam, T.. Research Institute of Forests and Rangelands, Agricultural Research Education and Extension; IránFil: Ferrara, V.. Stockholm University Of The Arts (uniarts);Fil: Garcia Rodriguez, F.. Universidad de la República; UruguayFil: Gitau, P.. National Museums Of Kenya; KeniaFil: Hannaford, M.. Lincoln University.; Nueva ZelandaFil: Herbert, A.. The Australian National University; AustraliaFil: Hernández, A.. Universidade Da Coruña; EspañaFil: Jalali, B.. Second Institute Of Oceanography; ChinaFil: Jha, D. K.. Max Planck Institute Of Geoanthropology; AlemaniaFil: Kinyanjui, R. N.. Max Planck Institute Of Geoanthropology; AlemaniaFil: Koren, G.. University of Utrecht; Países BajosFil: Mackay, H.. University of Durham; Reino UnidoFil: Mansilla, C. A.. Universidad de Magallanes; ChileFil: Margalef, O.. Universidad de Barcelona; EspañaFil: Mukhopadhyay, S.. Deccan College Post Graduate Research Institute; IndiaFil: Onafeso, O.. Olabisi Onabanjo University; NigeriaFil: Riris, P.. Bournemouth University; Reino UnidoFil: Rodriguez Abaunza, A.. Indiana University; Estados UnidosFil: Rodríguez Zorro, P.. Universidad Nacional de Colombia; ColombiaFil: Saeidi, S.. Lab. State Office For Cultural Heritage; AlemaniaFil: Ratnayake, A. S.. Uva Wellassa University; Sri LankaFil: Seitz, Carina. Universidad Nacional del Comahue; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Argentino de Oceanografía. Universidad Nacional del Sur. Instituto Argentino de Oceanografía; ArgentinaFil: Spate, M.. University Of Sydney; AustraliaFil: Vasquez Perez, Carolina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; ArgentinaFil: Benito, Xavier. Institut de Recerca I Tecnologia Agroalimentàries.; Españ

Who wants to talk to terrorists?

Interviewing terrorists or former terrorists has become an increasingly popular research method in terrorism studies. What terrorists say can shed light on motivations, decision-making processes and operational details that without first-hand testimony could only be inferred. In this chapter, a selection of these studies is reviewed alongside a consideration of global trends in terrorism and developments in terrorism research

Resurgence of Vaccine-Preventable Diseases in Venezuela as a Regional Public Health Threat in the Americas.

Venezuela's tumbling economy and authoritarian rule have precipitated an unprecedented humanitarian crisis. Hyperinflation rates now exceed 45,000%, and Venezuela's health system is in free fall. The country is experiencing a massive exodus of biomedical scientists and qualified healthcare professionals. Reemergence of arthropod-borne and vaccine-preventable diseases has sparked serious epidemics that also affect neighboring countries. In this article, we discuss the ongoing epidemics of measles and diphtheria in Venezuela and their disproportionate impact on indigenous populations. We also discuss the potential for reemergence of poliomyelitis and conclude that action to halt the spread of vaccine-preventable diseases within Venezuela is a matter of urgency for the country and the region. We further provide specific recommendations for addressing this crisis