PRS:半胱氨酸白三烯信号拮抗剂孟鲁司特不利于烧伤创面愈合

2022-09-03 MedSci原创 MedSci原创

孟鲁司特是一种半胱氨酸白三烯的拮抗剂,由美国食品和药物管理局批准用于治疗哮喘和过敏,此前被证明可以增强切除伤口的愈合和调节局部炎症。而这是否真是如此呢?

烧伤通常与伤口愈合受损有关。愈合受损是由多种因素引起的,包括在伤口部位的炎症反应失调。

孟鲁司特是一种半胱氨酸白三烯的拮抗剂,由美国食品和药物管理局批准用于治疗哮喘和过敏,此前被证明可以增强切除伤口的愈合和调节局部炎症。而这是否真是如此呢?

图1 文章来源

该研究分析了孟鲁司特和对照小鼠在烧伤后不同时间分离的烧伤创面组织的创面面积(n = 34 ~ 36)、再上皮化(n = 14)、炎症(n = 8 ~ 9)、免疫细胞浸润(n = 3 ~ 6)和增殖(n = 7 ~ 8),来研究孟鲁司特对烫伤小鼠创面愈合的影响。

图2 孟鲁司特影响烧伤愈合。

(上图)野生型小鼠遭受烧伤,并立即腹腔注射孟鲁司特或对照剂。小鼠随机分为两组。每天给老鼠拍照;代表性图片如下(上图左)。烧伤面积的量化(上图,右)

使用ImageJ采集数据,并表示为初始烧伤创面面积的百分比(n = 13 ~ 36,取决于时间点)。(下图)烧伤后第14天分离的皮肤苏木素和伊红染色切片的代表性图像(下图,左),以及再上皮化率的定量(下图,右)。黑色箭头表示创面边缘,灰色箭头表示新上皮前缘(n = 14)。数据以平均值±标准差表示。

定量聚合酶链反应分析采用Brown-Forsythe方差分析和Welch - Dunnett多重比较检验进行统计分析。伤口面积定量实验采用混合效应分析和Sidak多重比较检验进行统计分析。再上皮化实验采用双尾t检验进行统计分析(***p < 0.001;* * p < 0.01;* p < 0.05)。

但有趣的是,与之前描述的对切除创面的有益作用相反,该研究表明孟鲁司特通过损害角质细胞和内皮细胞的增殖延缓烧伤创面愈合。这在很大程度上独立于伤口部位的炎症反应,表明孟鲁司特特异性地损害了烧伤创面愈合的增殖期。不产生白三烯的小鼠的伤口愈合率不受孟鲁司特的影响。

综上述,孟鲁司特延缓烧伤创面愈合的机制主要是通过减少烧伤创面局部细胞的增殖。

虽然有必要开展临床研究来验证这一结果,但该研究建议,使用孟鲁司特的烧伤患者可能出现延迟愈合,需要额外的观察。

 

文章来源:

Nguyen Alan V,Bagood Michelle D,Wang Marilyn et al. Montelukast, an Antagonist of Cysteinyl Leukotriene Signaling, Impairs Burn Wound Healing.[J] .Plast Reconstr Surg, 2022, 150: 92e-104e.

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    2023-08-11 qindq
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    2023-01-14 kzlchina
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PLos One:孟鲁司特治疗肺移植后的闭塞性细支气管炎综合征

与安慰剂相比,孟鲁司特没有额外的生存获益,尽管研究效果不足。只在迟发性BOS1期受体中,使用孟鲁司特与FEV1降低速度减弱相关。

Medicine:孟鲁司特联合布地奈德治疗慢性咳嗽变异性哮喘患儿的效果

本研究旨在探究孟鲁司特联合布地奈德(MCB)治疗慢性咳嗽变异性哮喘(CCVA)儿童的有效性和安全性。研究共纳入82例CCVA患儿,年龄4~11岁。所有病例在2015年5月至2017年4月期间接受MCB或仅接受布地奈德治疗。主要结果是肺功能,通过呼气峰流速(PEFR)和1秒钟用力呼气量(FEV1)来评估。次要结果通过临床评估评分来衡量。此外,本研究还记录了不良事件(AEs)的发生。治疗8周后评估所有

Ear Nose Throat J:在季节过敏性鼻炎中,孟鲁司特作为一种预防性治疗效果研究

在季节过敏性鼻炎中,能够支持花粉季节开始之前进行预防性治疗的证据仍旧很少。最近,有研究人员进行了一项研究,调查了孟鲁司特对季节过敏性鼻炎预防治疗的效果,并且评估了对下呼吸道炎症情况的影响。研究群体包括了57名成年人,并被随机分配到了预防性治疗组和对照组。预防性治疗组包括了31名患者(10名男性和21名女性,年龄在18到54岁之间(平均年龄为36.9岁))。预防性治疗组接受孟鲁司特治疗,在柏树花粉季

FDA黑框警告!孟鲁司特钠可能造成严重精神副作用

提起孟鲁司特钠,估计不少妈妈都听过,这是一种一种白三稀受体抑制剂,通常用于哮喘的预防和长期治疗,也可以减轻过敏性鼻炎的症状。我国药监局批准其用于1岁以上儿童,美国官方也把其广泛应用在治疗6个月以上孩子

Eur Respir J:哮喘儿童发生严重的神经精神ADRs 孟鲁司特风险高?

2017年8月,发表在《Eur Respir J》的一项由加拿大科学家进行的回顾性队列研究,考察了孟鲁司特初始治疗特导致哮喘儿童发生神经精神药物不良反应(ADRs)的情况,并确定孟鲁司特比吸入糖皮质激素(ICS)发生ADRs的风险更高。

Drugs:孟鲁司特治疗变应性鼻炎的疗效:系统综述和荟萃分析

在治疗变应性鼻炎时,孟鲁司特有可能作为口服抗组胺剂或鼻内皮质类固醇的替代品或添加剂使用。本系统综述评估了孟鲁司特治疗变应性鼻炎的有效性。

拓展阅读

安医大一附院陈旭林教授/安医大王咸文教授团队《J Nanobiotechnol》:纳米材料靶向治疗烧伤后急性肺损伤的研究进展

该综述首先详尽地梳理了烧伤后ALI发生的机制和病理生理特征,总结了潜在的治疗靶点,如内皮细胞、巨噬细胞、线粒体等,对现有的纳米材料进行了分类,讨论了纳米材料在靶向治疗ALI中可能存在的问题和挑战。

烧伤后的周围神经病变与神经卡压

烧伤引起的并发症有很多,周围神经的病变和神经卡压综合征也是烧伤后导致的一系列并发症之一。但是由于对烧伤患者采用了全面的疼痛控制方案,神经源性疼痛在临床上可能并不明显,所以今早的识别和治疗就显得尤为重要

Int Wound J:湿式敷料联合壳聚糖伤口敷料治疗深二度烧伤的临床疗效

由于皮肤屏障功能的破坏,烧伤患者的免疫功能下降。伤口细菌感染的风险很高,严重时甚至危及患者的生命安全。因此,烧伤患者应尽快进行合理治疗,促进伤口愈合,改善皮肤功能,避免病情进一步恶化。

Clin Nutrition:富含omega-3脂肪酸胶原蛋白的饮料对严重烧伤患者伤口愈合、代谢生物标志物的影响

烧伤(burns)泛指由热力(如火焰、热液、热蒸汽、热金属等)造成的伤害;化学物质(如酸、碱、磷等);以及电流、放射线、激光等所造成的组织损害和烧伤有类似表现,有皮肤损害时归入烧伤治疗范畴。

烧伤(烫伤)患者的紧急处置

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