Department of Surgery, University Medical Center Utrecht, Utrecht University, 3584 Utrecht, The Netherlands.
Department of Surgery, Catharina Hospital, 5623 Eindhoven, The Netherlands.
Nutrients. 2023 May 16;15(10):2327. doi: 10.3390/nu15102327.
During esophagectomy, the vagus nerve is transected, which may add to the development of postoperative complications. The vagus nerve has been shown to attenuate inflammation and can be activated by a high-fat nutrition via the release of acetylcholine. This binds to α7 nicotinic acetylcholine receptors (α7nAChR) and inhibits α7nAChR-expressing inflammatory cells. This study investigates the role of the vagus nerve and the effect of high-fat nutrition on lipopolysaccharide (LPS)-induced lung injury in rats. Firstly, 48 rats were randomized in 4 groups as follows: sham (sparing vagus nerve), abdominal (selective) vagotomy, cervical vagotomy and cervical vagotomy with an α7nAChR-agonist. Secondly, 24 rats were randomized in 3 groups as follows: sham, sham with an α7nAChR-antagonist and cervical vagotomy with an α7nAChR-antagonist. Finally, 24 rats were randomized in 3 groups as follows: fasting, high-fat nutrition before sham and high-fat nutrition before selective vagotomy. Abdominal (selective) vagotomy did not impact histopathological lung injury (LIS) compared with the control (sham) group ( > 0.999). There was a trend in aggravation of LIS after cervical vagotomy ( = 0.051), even after an α7nAChR-agonist ( = 0.090). Cervical vagotomy with an α7nAChR-antagonist aggravated lung injury ( = 0.004). Furthermore, cervical vagotomy increased macrophages in bronchoalveolar lavage (BAL) fluid and negatively impacted pulmonary function. Other inflammatory cells, TNF-α and IL-6, in the BALF and serum were unaffected. High-fat nutrition reduced LIS after sham ( = 0.012) and selective vagotomy ( = 0.002) compared to fasting. vagotomy. This study underlines the role of the vagus nerve in lung injury and shows that vagus nerve stimulation using high-fat nutrition is effective in reducing lung injury, even after selective vagotomy.
在食管切除术期间,迷走神经被切断,这可能会增加术后并发症的发展。迷走神经已被证明可以减轻炎症,并且可以通过释放乙酰胆碱被高脂肪营养激活。这与α7 烟碱型乙酰胆碱受体(α7nAChR)结合并抑制表达α7nAChR 的炎症细胞。本研究调查了迷走神经的作用以及高脂肪营养对大鼠脂多糖(LPS)诱导的肺损伤的影响。首先,将 48 只大鼠随机分为 4 组:假手术(保留迷走神经)、腹部(选择性)迷走神经切断术、颈部迷走神经切断术和颈部迷走神经切断术加α7nAChR 激动剂。其次,将 24 只大鼠随机分为 3 组:假手术、假手术加α7nAChR 拮抗剂和颈部迷走神经切断术加α7nAChR 拮抗剂。最后,将 24 只大鼠随机分为 3 组:禁食、假手术前高脂肪营养和选择性迷走神经切断术前高脂肪营养。与对照组(假手术)相比,腹部(选择性)迷走神经切断术对组织病理学肺损伤(LIS)没有影响(>0.999)。颈部迷走神经切断术后 LIS 加重的趋势(=0.051),即使给予α7nAChR 激动剂(=0.090)也是如此。颈部迷走神经切断术加α7nAChR 拮抗剂加重了肺损伤(=0.004)。此外,颈部迷走神经切断术增加了支气管肺泡灌洗液(BAL)中的巨噬细胞,并对肺功能产生负面影响。BALF 和血清中的其他炎症细胞、TNF-α 和 IL-6 不受影响。与禁食相比,高脂肪营养减少了 sham(=0.012)和选择性迷走神经切断术后的 LIS(=0.002)。这项研究强调了迷走神经在肺损伤中的作用,并表明使用高脂肪营养刺激迷走神经可有效减轻肺损伤,即使在选择性迷走神经切断术后也是如此。