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Anatomical and functional maturation of the mid-gestation human enteric nervous system
Dershowitz and colleagues assess second trimester human fetal enteric nervous system development and function. They describe structural reorganization of the enteric nervous system that corresponds to gastrointestinal motility onset in ex vivo preparations.
- Lori B. Dershowitz
- , Li Li
- & Julia A. Kaltschmidt
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Article
| Open Access
Autonomic ganglionic injection of α-synuclein fibrils as a model of pure autonomic failure α-synucleinopathy
Autonomic dysfunction is a feature of some α-synucleinopathies, but there are no models of pure autonomic dysfunction associated with α-synuclein. Here the authors describe a mouse model of pure autonomic dysfunction without motor dysfunciton by injection of pre-formed fibrils of α-synuclein to the stellate and celiac ganglia.
- Xue-Jing Wang
- , Ming-Ming Ma
- & Xue-Bing Ding
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Article
| Open Access
Simultaneous optical and electrical in vivo analysis of the enteric nervous system
The enteric nervous system (ENS) plays a key role in regulating gut motility and homeostasis yet it remains a challenging system to record from. Here, the authors develop a novel abdominal window permitting simultaneous optical and electrical recording of mouse ENS system activity over prolonged time periods.
- Nikolai Rakhilin
- , Bradley Barth
- & Xiling Shen
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The origin of segmentation motor activity in the intestine
The segmentation motor activity of the small intestine is believed to be a result of alternating inhibitory and excitatory neural activity. Huizinga et al.show that the segmentation motor pattern is in fact a result of phase–amplitude interactions of slow-wave activities generated by two networks of interstitial cells of Cajal.
- Jan D. Huizinga
- , Ji-Hong Chen
- & David Chen
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Interstitial cells of Cajal integrate excitatory and inhibitory neurotransmission with intestinal slow-wave activity
Interstitial cells of Cajal generate rhythmic pacemaker currents, which result in rhythmic bowel contractions. Klein and colleagues use knock-in mutations to inactivate these cells in mice and find that they modulate bowel contractions by integrating excitatory and inhibitory neurotransmission in the gut.
- Sabine Klein
- , Barbara Seidler
- & Dieter Saur
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Bacteroides fragilis polysaccharide A is necessary and sufficient for acute activation of intestinal sensory neurons
Commensal bacteria in gut lumen are known to interact with the enteric nervous system. Mao and colleagues test the effects of Lactobacillus rhamnosus and Bacteroides fragilis ex vivo, in the myenteric plexus, and find that the polysaccharide A is necessary for intestinal sensory neuron sensitization.
- Yu-Kang Mao
- , Dennis L. Kasper
- & Wolfgang A. Kunze
Transparent tissue in solid state for solvent-free and antifade 3D imaging