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Expression data from rat regenerating livers after autonomic nervous system is disrupted

ABSTRACT: Autonomic nervous system is widely distributed in liver, and some reserchers have found that disruppted autonomic nerves will delay liver regeneration. We used microarrays to further highlight the regulatory role of autonomic nervous system in liver regeneration at gene transcription level.

ORGANISM(S): Rattus norvegicus

PROVIDER: GSE26138 | GEO | 2010/12/18

SECONDARY ACCESSION(S): PRJNA135387

REPOSITORIES: GEO

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Expression data from rat regenerating livers after autonomic nervous system is disrupted

Project description:Autonomic nervous system is widely distributed in liver, and some reserchers have found that disruppted autonomic nerves will delay liver regeneration. We used microarrays to further highlight the regulatory role of autonomic nervous system in liver regeneration at gene transcription level. Surgical operations of rat partial hepatectomy (PH) and its operation control (OC), sympathectomy combining partial hepatectomy (SPH), vagotomy combining partial hepatectomy (VPH), and total liver denervation combining partial hepatectomy (TDPH) were performed, and the expression profiles of regenerating liver at 2h were detected using Rat Genome 230 2.0 array. Then the significantly changed genes related to liver regeneration (LR)-, injury-, splanchnic nerve-LR-, vagal nerve-LR-, and autonomic nerve-LR-related genes were identified, respectively. The relevance of gene expression profiles and biological processes was analyzed by bioinformatics and systems biology.

2010-12-18 | E-GEOD-26138 | biostudies-arrayexpress

Effects of light-at-night on the rat liver - a role for the autonomic nervous system (Experiment 1)

Project description:Exposure to light at night (LAN) has been associated with serious pathologies, including obesity, diabetes and cancer. Recently we showed that 2 hours of LAN impaired glucose tolerance in rats. Several studies have suggested that the autonomic nervous system (ANS) plays an important role in communicating these acute effects of LAN to the periphery. Here, we investigated the acute effects of LAN on the liver transcriptome of male Wistar rats. Expression levels of individual genes were not markedly affected by LAN, nevertheless pathway analysis revealed clustered changes in a number of endocrine pathways. Subsequently, we used selective hepatic denervations (sympathetic (Sx), parasympathetic (Px), total (Tx, i.e., Sx plus Px), sham) to investigate the involvement of the ANS in the effects observed. Surgical removal of the sympathetic or parasympathetic hepatic branches of the ANS resulted in many, but small changes in the liver transcriptome, including a pathway involved with circadian clock regulation, but it clearly separated the four denervation groups. On the other hand, analysis of the liver metabolome was not able to separate the denervation groups, and only 6 out of 78 metabolites were significantly up- or downregulated after denervations. Finally, removal of the sympathetic and parasympathetic hepatic nerves combined with LAN exposure clearly modulated the effects of LAN on the liver transcriptome, but left most endocrine pathways unaffected. Conclusion: One-hour light-at-night acutely affects the liver transcriptome. Part of this effect is mediated via the nervous innervation, as a hepatectomy modulated and reduced the effect of LAN on liver transcripts.

2018-10-10 | GSE120979 | GEO

Effects of light-at-night on the rat liver - a role for the autonomic nervous system (Experiment 2)

2018-10-10 | GSE120978 | GEO

Neural activity recorded in breast tumors originates from the sympathetic nervous

Project description:The autonomic nervous system (ANS) is a regulator of major pathological events in the tumor microenvironment (TME) of solid carcinomas where the branches of ANS have antagonistic effects on tumor growth and metastasis. Neural activity recorded from breast tumors may be associated with autonomic system function. To test this hypothesis, we performed in vivo chronic electrical recordings from murine mammary tumors of triple negative breast cancers (TNBC) following complete sub-diaphragmatic vagotomy and chemical sympathectomy. In addition to TNBC mammary tumors, we also obtained daily electrical recordings from mammary tumors overexpressing human epidermal growth factor receptor-2 (HER2) following chemical sympathectomy. Our results show that tumoral neural activity is partially blocked in vagotomized animals while it is completely absent in the sympathectomized subjects. These studies indicate that neural activity in TNBC and HER2+ tumors is predominantly generated by peripheral nor-adrenergic sympathetic nerves and provide evidence of a strong active link between the brain and tumor through the autonomic nervous system. The results implicate a new and as yet unexplored mechanism to investigate the potential role of the sympathetic nervous system in the regulation of tumor growth and metastasis.

2024-02-05 | GSE254740 | GEO

Effects of light-at-night on the rat liver - a role for the autonomic nervous system

Project description:Effects of light-at-night on the rat liver - a role for the autonomic nervous system

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Motor nerves direct the development of the sympathetic nervous system

Project description:The sympathetic nervous system controls a wide spectrum of bodily functions including operation of vessels, cardiac rhythm, and the “flight or fight response”. Sympathetic neurons, which are neural crest-derived, develop in coordination with presynaptic motor nerves extending from the central nervous system (CNS). By using nerve-selective genetic ablations, we revealed that sympathetic ganglia development depends on CNS-derived motor innervation. In the absence of preganglionic motor nerves, trunk sympathetic chain ganglia were fragmented and smaller in size, while cervical ganglia were severely misshapen. Sympathetic neurons were misplaced along sensory fibers and projected towards abnormal paths, in some cases invading the sensory dorsal root ganglia. The misplaced progenitors of sympathoblasts corresponded to the nerve-associated, neural crest-derived Schwann cell precursors (SCPs). Notably, we found that SCPs activate the autonomic marker PHOX2B while migrating along motor nerves towards the region of the dorsal aorta in wildtype embryos, suggesting that SCP differentiate into sympathetic neurons while still nerve-associated in motor-ablated embryos. Ligand-receptor prediction from single cell transcriptomic data coupled with functional studies identified Semaphorin 3A/3F as candidate motor nerve-derived signals influencing neural crest migration along axons. Thus, motor nerves control the placement of sympathoblasts and their subsequent axonal navigation during critical periods of sympathetic chain development.

2024-07-14 | GSE261748 | GEO

Effects of light-at-night on the rat liver - a role for the autonomic nervous system (Experiment 2)

Project description:Effects of light-at-night on the rat liver - a role for the autonomic nervous system (Experiment 2)

| PRJNA495165 | ENA

Effects of light-at-night on the rat liver - a role for the autonomic nervous system (Experiment 1)

Project description:Effects of light-at-night on the rat liver - a role for the autonomic nervous system (Experiment 1)

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A functional circuit formed by the autonomic nerves and myofibroblasts controls mammalian alveolar formation for gas exchange

Project description:Alveolar formation increases the surface area for gas exchange. A molecular understanding of alveologenesis remains incomplete. Here, we show that the autonomic nerve and alveolar myofibroblast form a functional unit in mice. Myofibroblasts secrete neurotrophins to promote neurite extension/survival, whereas neurotransmitters released from autonomic terminals are necessary for myofibroblast proliferation and migration, a key step in alveologenesis. This establishes a functional link between autonomic innervation and alveolar formation. We also discover that planar cell polarity (PCP) signaling employs a Wnt-Fz/Ror-Vangl cascade to regulate the cytoskeleton and neurotransmitter trafficking/release from the terminals of autonomic nerves. This represents a new aspect of PCP signaling in conferring cellular properties. Together, these studies offer molecular insight into how autonomic activity controls alveolar formation. Our work also illustrates the fundamental principle of how two tissues (e.g., nerves and lungs) interact to build alveoli at the organismal level.

2022-06-16 | GSE189466 | GEO

Transcriptome Profiling of Intact Bowel Wall Reveals that PDE1A and SEMA3D are Possible Markers with Roles in Enteric Smooth Muscle Apoptosis, Proliferative Disorders, and Autonomic Nervous Abnormality in Crohn's Disease.

Project description:To use surgical resection specimens of the intact bowel wall from inflammatory bowel disease (IBD) patients and perform RNA-seq, bioinformatics analysis, and validation by quantitative polymerase chain reaction (qPCR) and immunohistochemistry (IHC) to explore the subtle differences between Crohn's disease (CD) and ulcerative colitis (UC), with predominant focus on the smooth muscle cells (SMCs) and enteric autonomic nervous system (ANS).

2023-03-28 | GSE227747 | GEO

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