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jneurosci.org

While transient changes in synaptic strength occurring during the repetitive firing of primary afferent inputs to the spinal superficial dorsal horn (SDH) are predicted to strongly influence the fidelity with which nociceptive signals are transmitted through the SDH network, little is known about whether the properties of short-term plasticity (STP) at sensory synapses depend on the identity of the postsynaptic target or whether STP is under the control of neuromodulators such as dopamine. Here we investigate these issues using ex vivo patch-clamp recordings from identified lamina I spinoparabrachial neurons, inhibitory interneurons (VGAT+), and putative excitatory interneurons (VGAT−) in spinal cord slices from adult mice of both sexes. Repeated activation of A-fiber inputs to the SDH evoked short-term depression (STD) across all major subtypes of SDH neurons, although the magnitude of STD was greatest in projection neurons with high-frequency stimulation. Meanwhile, repetitive activation of C-fiber synapses onto GABAergic interneurons evoked more pronounced STD compared with excitatory neurons across a range of stimulation frequencies. Both A-fiber and C-fiber synapses recovered from STD at a similar rate across the different SDH cell types examined. Dopamine (20 µM) significantly depressed the overall glutamatergic drive, and reduced afferent-evoked firing, selectively in spinoparabrachial neurons and excitatory interneurons without changes in the properties of STP. Collectively, these findings reveal novel potential mechanisms by which the efficacy of the spinal inhibitory “gate,” and thus the gain of ascending nociceptive transmission to the brain, may be rapidly altered during periods of strong sensory input to the SDH network.

media.jamanetwork.com

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ruralneuropractice.com

Dislocated spine, damaged heart: Takotsubo cardiomyopathy following acute cervical spine injury

riojournal.com

Water is vital for life on Earth, but aquatic environments worldwide are facing critical challenges that cause severe problems for biodiversity and human well-being. These challenges include, for example, water pollution, habitat degradation, escalating water and air temperatures, salinisation of freshwaters, ocean acidification and invasive species. Since these stressors interact in complex ways, developing predictions and mitigation measures is difficult. Mesocosm experiments, offering controlled, yet realistic settings, are crucial for understanding and mitigating the impact of various stressors and their combinations on aquatic ecosystems. Mesocom facilities are key Research Infrastructures (RI), as they bridge the gap between laboratory experiments and natural systems allowing studies of highly complex environments comparable to natural ecosystems, while still offering controlled and replicated settings not available in natural systems.The AQUACOSM-RI consortium, comprising over 60 individual state-of-the-art mesocosm facilities at 28 host institutions across Europe, has therefore been instrumental in advancing aquatic environmental research across climate zones including marine, brackish and freshwater ecosystems. In addition, the EU H2020-INFRAIA projects AQUACOSM (CORDIS No. 731065) and AQUACOSM-plus (CORDIS No. 871081, www.aquacosm.eu) have developed a virtual network beyond Europe of presently > 85 host institutions with > 120 aquatic mesocosm facilities around the world, www.mesocosm.org. However, the rich, yet disconnected resources in aquatic mesocosm-based experimental research and mitigation approaches need to be combined in a modern, visible and accessible way.The project AQUANAVI (Navigating Grand Challenges and their Mitigation using Aquatic Experimental RIs) aims to enhance existing efforts by creating an interactive atlas of aquatic mesocosm facilities and related mesocosm-based experimental research. Integrating data, publications, reports

revistaclinicacontemporanea.org

en la revista clínica contemporánea del colegio oficial de la psicología de madrid, compartimos nuestra práctica clínica y terapéutica. ¡infórmate!

journals.biologists.com

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harvardmagazine.com

Adapting to new conditions—but books are still a “core business”

michigantoday.umich.edu

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