PMID- 30524304 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20200930 IS - 1664-042X (Print) IS - 1664-042X (Electronic) IS - 1664-042X (Linking) VI - 9 DP - 2018 TI - Targeted Ablation of Distal Cerebrospinal Fluid-Contacting Nucleus Alleviates Renal Fibrosis in Chronic Kidney Disease. PG - 1640 LID - 10.3389/fphys.2018.01640 [doi] LID - 1640 AB - The potential function of distal cerebrospinal fluid-contacting nucleus (dCSF-CNs) in chronic kidney disease (CKD) development is poorly understood. We hypothesized that dCSF-CNs might affect the renin-angiotensin system (RAS) in kidney injury progression, with dCSF-CNs ablation potentially alleviating local RAS and renal fibrosis in rats after five-sixths nephrectomy (5/6Nx). Part of rats were randomly administered artificial cerebrospinal fluid (aCSF) intracerebroventricularly (icv), followed by 5/6Nx or sham operation; and other part of rats were administered Cholera toxin B subunit conjugated with saporin (CB-SAP) for dCSF-CNs lesion before 5/6Nx. The effect of CB-SAP on dCSF-CNs ablation was confirmed by double immunofluorescence staining. RAS component, NOX(2) and c-fos levels in the subfornical organ (SFO), hypothalamic paraventricular nucleus (PVN) and hippocampus, as well as tyrosine hydroxylase (TH) and c-fos positive cells in rostral ventrolateral medulla (RVLM) were assessed. Next, the levels of RAS components (angiotensinogen [AGT], angiotensin-converting enzyme [ACE], Ang II type 1 receptor [AT1R], angiotensin-converting enzyme 2 [ACE2], and Mas receptor), NADPH oxidases (NOX(2) and catalase), inflammatory cytokines (monocyte chemotactic protein 1 [MCP-1] and IL-6), and fibrotic factors (fibronectin and collagen I) were assessed. Less CB-labeled neurons were found in dCSF-CNs of CB-SAP-treated rats compared with 5/6Nx animals. Meanwhile, CB-SAP downregulated AGT, Ang II, AT1R, NOX(2), catalase, MCP-1, IL-6, fibronectin, and collagen I, and upregulated ACE2 and Mas receptor, compared with CKD rats. More TH and c-fos positive cells were found in RVLM of 5/6Nx rats but the number decreased after dCSF-CNs ablation. Targeted dCSF-CNs ablation could alleviate renal inflammation and fibrosis in chronic kidney injury by inhibiting cerebral and renal RAS/NADPH oxidase. FAU - Qiu, Minzi AU - Qiu M AD - State Key Laboratory of Organ Failure Research, National Clinical Research Center for Kidney Disease, Nanfang Hospital, Southern Medical University, Guangzhou, China. FAU - Li, Jiawen AU - Li J AD - State Key Laboratory of Organ Failure Research, National Clinical Research Center for Kidney Disease, Nanfang Hospital, Southern Medical University, Guangzhou, China. FAU - Tan, Lishan AU - Tan L AD - State Key Laboratory of Organ Failure Research, National Clinical Research Center for Kidney Disease, Nanfang Hospital, Southern Medical University, Guangzhou, China. FAU - Zhang, Mengbi AU - Zhang M AD - State Key Laboratory of Organ Failure Research, National Clinical Research Center for Kidney Disease, Nanfang Hospital, Southern Medical University, Guangzhou, China. FAU - Zhou, Guang AU - Zhou G AD - State Key Laboratory of Organ Failure Research, National Clinical Research Center for Kidney Disease, Nanfang Hospital, Southern Medical University, Guangzhou, China. FAU - Zeng, Tao AU - Zeng T AD - State Key Laboratory of Organ Failure Research, National Clinical Research Center for Kidney Disease, Nanfang Hospital, Southern Medical University, Guangzhou, China. FAU - Li, Aiqing AU - Li A AD - State Key Laboratory of Organ Failure Research, National Clinical Research Center for Kidney Disease, Nanfang Hospital, Southern Medical University, Guangzhou, China. LA - eng PT - Journal Article DEP - 20181121 PL - Switzerland TA - Front Physiol JT - Frontiers in physiology JID - 101549006 PMC - PMC6262366 OTO - NOTNLM OT - NADPH oxidase OT - chronic kidney disease OT - dCSF-CNs OT - inflammation OT - renal fibrosis OT - renin-angiotensin system OT - sympathetic nervous system EDAT- 2018/12/14 06:00 MHDA- 2018/12/14 06:01 PMCR- 2018/11/21 CRDT- 2018/12/08 06:00 PHST- 2018/05/25 00:00 [received] PHST- 2018/10/30 00:00 [accepted] PHST- 2018/12/08 06:00 [entrez] PHST- 2018/12/14 06:00 [pubmed] PHST- 2018/12/14 06:01 [medline] PHST- 2018/11/21 00:00 [pmc-release] AID - 10.3389/fphys.2018.01640 [doi] PST - epublish SO - Front Physiol. 2018 Nov 21;9:1640. doi: 10.3389/fphys.2018.01640. eCollection 2018.