Laryngopharyngeal Reflux

咽喉反流
  • 文章类型: Journal Article
    慢性鼻-鼻窦炎(CRS)是影响鼻和鼻旁窦粘膜的复杂炎性病症。胃食管反流病(GERD)被认为是CRS的潜在恶化因素,但是在这种情况下,鼻咽病理学的具体内窥镜特征仍然知之甚少。背景和目的:慢性鼻-鼻窦炎是一种多因素疾病,具有多种潜在病因,包括炎症,解剖学因素,和环境触发因素。虽然胃食管反流病被认为是慢性鼻-鼻窦炎的潜在原因,在有GERD症状的CRS患者中,鼻咽病变的具体内镜特征尚未明确阐明.我们的目的是确定与GERD症状相关的CRS患者鼻咽病理的特定内镜特征,并提出一种评估胃食管反流病对鼻和鼻咽粘膜层影响的方法。材料和方法:我们进行了一项横断面观察性研究,涉及521名表现为CRS症状的成年患者。从这个队列中,选择反流症状指数(RSI)和反流症状评分-12(RSS-12)问卷得分最高的95例患者作为主要组。进行内窥镜检查以评估鼻腔和鼻咽粘膜。结果:我们的研究显示,与GERD症状相关的CRS患者的鼻咽粘膜发生了显着改变。在91例患者中观察到鼻咽粘膜的血管增加(95.7%),而83例患者出现肥大(87.4%)。77例患者鼻咽部存在粘液(81.1%),表现出不同的颜色和一致性特征。62例患者(65.3%)发现口咽粘膜不对称肥大。结论:我们提出了一种评估胃食管反流病对鼻和鼻咽粘膜层影响的方法,这可能有助于诊断和管理决策。需要进一步的研究来探索GERD症状对CRS恶化的病程和严重程度的潜在影响。
    Chronic rhinosinusitis (CRS) is a complex inflammatory condition affecting the nasal and paranasal sinus mucosa. Gastroesophageal reflux disease (GERD) has been implicated as a potential exacerbating factor in CRS, but the specific endoscopic features of nasopharyngeal pathology in this context remain poorly understood. Background and Objectives: Chronic rhinosinusitis is a multifactorial disease with various underlying etiologies, including inflammation, anatomical factors, and environmental triggers. While gastroesophageal reflux disease has been suggested as a potential contributor to chronic rhinosinusitis, the specific endoscopic features indicative of nasopharyngeal pathology in CRS patients with GERD symptoms have not been clearly elucidated. Our aim is to identify specific endoscopic features of nasopharyngeal pathology in patients with CRS associated with GERD symptoms and to propose a method for assessing the influence of gastroesophageal reflux disease on the mucosal layer of the nose and nasopharynx. Materials and Methods: We conducted a cross-sectional observational study involving 521 adult patients presenting with symptoms suggestive of CRS. From this cohort, 95 patients with the highest scores on the Reflux Symptom Index (RSI) and Reflux Symptom Score-12 (RSS-12) questionnaires were selected as the main group. Endoscopic examinations were performed to assess the nasal and nasopharyngeal mucosa. Results: Our study revealed significant alterations in the nasopharyngeal mucosa of patients with CRS associated with GERD symptoms. Increased vascularity of the nasopharyngeal mucosa was observed in 91 patients (95.7%), while hypertrophy was noted in 83 patients (87.4%). Mucus was present in the nasopharynx of 77 patients (81.1%), exhibiting varying characteristics of color and consistency. Asymmetric hypertrophy of the oropharyngeal mucosa was noted in 62 patients (65.3%). Conclusions: We propose a method for assessing the influence of gastroesophageal reflux disease on the mucosal layer of the nose and nasopharynx, which may aid in diagnostic and management decisions. Further research is warranted to explore the potential impact of GERD symptoms on the course and severity of CRS exacerbations.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Pubmed)

  • 文章类型: Journal Article
    目的:评估在马罗匹坦和泮托拉唑的治疗方案中加入甲氧氯普胺是否会降低哮喘的发生率,胸腰段脊柱手术的短头犬呕吐和反流。
    方法:随机盲法对照试验。
    方法:共有43只短头犬接受胸腰段脊柱手术。
    方法:除了标准化的麻醉方案,狗被随机分配给2mgkg-1day-1甲氧氯普胺恒定速率输注(CRI)或同等输注速率的盐水溶液,麻醉诱导后开始,气管拔管后5小时停止。呕吐的存在,反流和脓疱病,格拉斯哥综合疼痛量表疼痛评分的简短形式由失明的观察者每小时评估4小时,拔管后1小时开始。
    结果:6只狗术后发生反流;安慰剂组3只狗,甲氧氯普胺组3只狗。术后返流的比值比(OR)在组间没有差异[OR:0.76,95%置信区间(CI):0.13-4.3,p=0.76]。术后3小时和4小时观察到ptypalism的几率约为术后1小时的15倍(OR均:15.4,95%CI:1.8-130.7,p=0.012),并且基于添加甲氧氯普胺(OR:0.73,95%CI:0.07-8.0,p=0.79)。观察疼痛的几率不随时间变化,并且基于添加甲氧氯普胺没有差异(OR:0.71,95%CI:0.12-4.2,p=0.71)。研究期间未发生呕吐(0.0%,95%CI:0.0-8.2%)。在研究期间,两组均未观察到不良反应。
    结论:在马罗匹坦和泮托拉唑中添加甲氧氯普胺CRI并没有显著降低接受胸腰椎脊柱手术的短头犬的返流或返流。
    OBJECTIVE: To assess whether adding metoclopramide to a protocol of maropitant and pantoprazole would reduce incidence of ptyalism, vomiting and regurgitation in brachycephalic dogs undergoing thoracolumbar spinal surgery.
    METHODS: Randomized blinded controlled trial.
    METHODS: A total of 43 brachycephalic dogs undergoing thoracolumbar spinal surgery.
    METHODS: In addition to a standardized anaesthetic regimen, dogs were randomized to be administered either a 2 mg kg-1 day-1 metoclopramide constant rate infusion (CRI) or a saline solution at an equivalent infusion rate, started after anaesthetic induction and discontinued 5 hours after tracheal extubation. The presence of vomiting, regurgitation and pytalism, and short form of the Glasgow Composite Pain Scale pain scores were assessed by a blinded observer hourly for 4 hours, starting 1 hour postextubation.
    RESULTS: Regurgitation occurred in six dogs postoperatively; three dogs were in the placebo group and three in the metoclopramide group. The odds ratio (OR) of regurgitation after surgery did not differ between groups [OR: 0.76, 95% confidence interval (CI): 0.13-4.3, p = 0.76]. The odds of observing ptyalism at 3 and 4 hours was approximately 15 times less than 1 hour postoperatively (both OR: 15.4, 95% CI: 1.8-130.7, p = 0.012) and did not differ based on the addition of metoclopramide (OR: 0.73, 95% CI: 0.07-8.0, p = 0.79). The odds of observing pain did not change over time and did not differ based on the addition of metoclopramide (OR: 0.71, 95% CI: 0.12-4.2, p = 0.71). Vomiting did not occur during the study (0.0%, 95% CI: 0.0-8.2%). No adverse effects were observed during the study period in either group.
    CONCLUSIONS: The addition of a metoclopramide CRI to maropitant and pantoprazole did not result in a significant reduction in ptyalism or regurgitation in brachycephalic dogs undergoing thoracolumbar spinal surgery.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

    求助全文

  • 文章类型: Journal Article
    质子泵抑制剂(PPI)在控制咽喉反流(LPR)中起着至关重要的作用,但最佳给药方案仍不清楚.我们的目的是比较LPR患者每天两次与每天一次给予相同总PPI剂量的有效性。
    我们在三级转诊医院进行了一项前瞻性随机对照试验,共招募132名19-79岁的LPR患者。这些患者被随机分配接受10mg每日两次(BID)或20mg每日一次(QD)剂量的艾普拉唑,持续12周。在8周和16周评估反流症状指数(RSI)和反流发现评分(RFS)。主要终点是RSI反应,定义为RSI总分从基线降低50%或更多。我们还分析了给药方案的疗效以及给药和持续时间对治疗结果的影响。
    BID组未显示比QD组更高的RSI反应率。在8周和16周的访问中,RSI总分的变化在两组之间没有显着差异。两组之间的总RFS改变也是相当的。每种给药方案显示RSI和RFS显著降低。
    BID和QDPPI给药方案均可改善主观症状评分和客观喉镜检查结果。两种给药方案之间的RSI改善没有显着差异,这表明任何一种给药方案都可以被认为是可行的治疗选择。
    UNASSIGNED: Proton pump inhibitors (PPIs) play a crucial role in managing laryngopharyngeal reflux (LPR), but the optimal dosing regimen remains unclear. We aim to compare the effectiveness of the same total PPI dose administered twice daily versus once daily in LPR patients.
    UNASSIGNED: We conducted a prospective randomized controlled trial at a tertiary referral hospital, enrolling a total of 132 patients aged 19-79 with LPR. These patients were randomly assigned to receive either a 10 mg twice daily (BID) or a 20 mg once daily (QD) dose of ilaprazole for 12 weeks. The Reflux Symptom Index (RSI) and Reflux Finding Score (RFS) were assessed at 8 weeks and 16 weeks. The primary endpoint was the RSI response, defined as a reduction of 50% or more in the total RSI score from the baseline. We also analyzed the efficacy of the dosing regimens and the impact of dosing and duration on treatment outcomes.
    UNASSIGNED: The BID group did not display a higher response rate for RSI than the QD group. The changes in total RSI scores at the 8-week and 16-week visits showed no significant differences between the 2 groups. Total RFS alterations were also comparable between both groups. Each dosing regimen demonstrated significant decreases in RSI and RFS.
    UNASSIGNED: Both BID and QD PPI dosing regimens improved subjective symptom scores and objective laryngoscopic findings. There was no significant difference in RSI improvement between the 2 dosing regimens, indicating that either dosing regimen could be considered a viable treatment option.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

    求助全文

  • 文章类型: Journal Article
    目的:声带肉芽肿(VPG)是一种慢性疾病,由声带粘壁神经损伤引起。最初的保守治疗通常包括声乐卫生教育和抗反流药物。难治性病例出现治疗挑战。二线治疗如手术切除和肉毒杆菌毒素注射的结果仍然不一致。因此,我们建议这项研究来调查病灶内注射类固醇治疗难治性VPG的有效性。
    方法:我们对23例使用质子泵抑制剂3个月后无改善的VPG患者进行了回顾性分析。这些患者每月接受一到三个疗程的办公室内病灶内类固醇注射作为二线治疗。通过在最终注射程序之前和之后测量VPG相对于声带长度的大小来评估治疗结果。
    结果:结果显示VPG大小从基线的27.74±15.06显著降低至5.48±8.95(p<.001)。23例患者中有15例对病灶内类固醇注射有反应(大小减小≥75%)。饮酒和较长的症状持续时间与不良反应相关(大小减少<75%),而之前的插管与更好的反应相关。
    结论:对于保守治疗无效的难治性VPG,病灶内注射类固醇似乎是一种有希望的替代选择,没有明显的不良反应.
    OBJECTIVE: Vocal process granuloma (VPG) is a chronic condition resulting from a mucoperichondrial injury of vocal process. Initial conservative treatment typically involves vocal hygiene education and antireflux medication. Treatment challenges arise with refractory cases. Outcomes of second-line treatments such as surgical excision and botulinum toxin injections remain inconsistent. Thus, we propose this study to investigate the effectiveness of intralesional steroid injections for refractory VPG.
    METHODS: We conducted a retrospective review of 23 patients with VPG who showed no improvement after 3 months of proton pump inhibitors. These patients underwent one to three courses of monthly in-office intralesional steroid injections as a second-line therapy. Treatment outcomes were evaluated by measuring the size of the VPG relative to the length of the vocal folds before and after the final injection procedure.
    RESULTS: Results showed a significant reduction in VPG size from baseline of 27.74 ± 15.06 to 5.48 ± 8.95 (p < .001). 15 out of 23 patients were responsive (size reduction ≥ 75%) to intralesional steroid injection. Alcohol consumption and longer symptom duration were associated with a poor response (size reduction <75%), whereas prior intubation was associated with better response.
    CONCLUSIONS: For refractory VPG not responding to conservative treatment, intralesional steroid injection appears to be a promising alternative option without significant adverse effects.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

    求助全文

  • 文章类型: Journal Article
    胃内容物向咽部的逆行运动称为咽喉反流(LPR)。它代表与胃食管反流病(GERD)相关的食管外表现。该研究的目的是研究LPR的临床特征及其对治疗的反应。选择了三百名连续的患者,他们在ENT门诊部就诊,具有LPR的临床特征。使用反流症状指数(RSI)评估患者的症状,然后进行喉内镜检查并使用反流发现评分(RFS)进行评分。如果患者的RSI评分为13,RFS超过7,则开始进行LPR治疗。然后患者开始用药并监测三个月。我们的研究样本中最常见的症状(52%)是喉咙的异物感。在喉内窥镜检查中,最常见的体征是喉组织充血/红斑,尤其是双侧类arytenoid。我们的大多数患者对泮托拉唑(40mg)和多潘立酮(30mg)的组合反应良好,持续4周。这是通过RSI和RFS评分的降低来衡量的。LPR是一种经常遇到的临床实体,耳鼻喉科医师在治疗慢性症状如咽喉疼痛和声音变化时应该考虑它。适当的LPR诊断和护理可以帮助防止这些患者不必要的抗生素处方和手术干预。
    Retrograde movement of gastric contents into the pharynx is termed Laryngopharyngeal Reflux (LPR). It represents an extraesophageal manifestation associated with gastroesophageal reflux disease (GERD). The objective of the study is to investigate the clinical profile of LPR and its response to treatment. Three hundred consecutive patients who presented to the ENT outpatient department with a clinical profile of LPR were selected. The patients\' symptoms were assessed using the Reflux Symptom Index (RSI), followed by an endoscopic examination of the larynx and scoring using the Reflux Finding Score (RFS). Patients were started on LPR treatment if they had an RSI score of 13 and an RFS of more than 7. The patients were then started on medication and monitored for three months. The most common symptom in our research sample (52%) was a foreign body sensation in the throat. On endoscopic examination of the larynx, the most common sign was hyperemia/erythema of laryngeal tissue, especially bilateral arytenoids. Most of our patients responded favorably to a combination of pantoprazole (40 mg) and domperidone (30 mg) for 4 weeks. This was measured by the reduction in RSI and RFS scores. LPR is a frequently encountered clinical entity, and otorhinolaryngologists should consider it when treating patients with chronic symptoms such as throat pain and voice changes. Appropriate LPR diagnosis and care can help prevent unnecessary prescriptions for antibiotics and surgical interventions in these patients.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Pubmed)

  • 文章类型: Journal Article
    背景:喉部受累在结核病中是罕见的,约占全球所有这种感染病例的1%。鉴于喉部在气道中的位置,这种形式的结核病特别重要,因为它具有高度传染性。由于我们医院处于结核病高负担地区,我们建议表征临床表现,进化,和喉镜检查发现的一系列喉结核病例,以减少误诊。
    方法:检索并分析2011年1月至2021年12月耳鼻咽喉科诊断为喉结核的10例患者的流行病学和临床资料。
    结果:有8名男性和2名女性。7例患者有吸烟和酗酒史,4例有矽肺。声音嘶哑是报告最多的症状(n=9)。最常见的受累部位是真实的声带(n=6)。除一名患者外,所有患者均伴有活动性肺结核。开始抗结核治疗后4至16周,患者的喉症状完全缓解。
    结论:喉结核确实是一个很大的欺骗者。一方面,它看起来像一个简单的息肉样病变或模拟咽喉反流;但另一方面,其危险因素,症状和外观模拟喉癌没有像其他。由于大多数患者同时患有肺结核,所有可疑的喉部病变均应在刚性喉镜检查前进行胸部X光检查.抗结核治疗在缓解症状和降低传播风险方面都是有效的。
    BACKGROUND: Laryngeal involvement is rare in tuberculosis, representing around 1% of all cases of this infection worldwide. Given the larynx\' location in the airway, this form of tuberculosis is of particular importance because it is highly contagious. With our hospital being in a high tuberculosis burden area, we propose to characterize the clinical presentation, evolution, and laryngoscopy findings of a series of laryngeal tuberculosis cases in order to reduce misdiagnosis.
    METHODS: Epidemiological and clinical data from 10 patients diagnosed with laryngeal tuberculosis in the Otorhinolaryngology department of (Blinded for manuscript) between January 2011 and December 2021 were retrieved and analyzed.
    RESULTS: There were eight males and two females. Seven patients had a history of smoking and alcohol abuse and four had silicosis. Hoarseness was the most reported symptom (n = 9). The most frequent site of involvement were the true vocal cords (n = 6). All patients but one had concomitant active pulmonary tuberculosis. Patients had full resolution of laryngeal symptoms between 4 and 16 weeks after initiating antituberculosis treatment.
    CONCLUSIONS: Laryngeal tuberculosis is indeed a great deceiver. On one hand it can look like a simple polypoid lesion or simulate laryngopharyngeal reflux; but on the other hand its risk factors, symptoms and appearance simulate laryngeal carcinoma like no other. Since most patients present with concomitant pulmonary tuberculosis, all suspect laryngeal lesions should perform a chest radiograph prior to rigid laryngoscopy. Antituberculosis treatment is effective in both alleviating symptoms and reducing the risk of transmission.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

    求助全文

  • 文章类型: Journal Article
    目的:本研究旨在主观和客观地检查神经性贪食症(BN)患者在不同治疗阶段的声音变化。
    方法:该研究的研究组包括10名诊断为BN的患者,对照组由10名年龄相似的健康参与者组成,没有进食障碍。回流症状指数(RFS)用于频闪评价。基频(F0),抖动,shimmer,在声学语音分析过程中确定了噪声谐波比。分析了最大发声时间。使用语音障碍指数-10(VHI-10)进行主观评估。
    结果:抖动,shimmer,VHI-10得分,和RFS值在患者组和对照组中差异有统计学意义(P<0.05)。抖动的平均值,shimmer,VHI-10得分,患者组的RFS和RFS高于对照组。最大发声时间组间差异无统计学意义(P>0.05)。患者组和对照组的年龄和F0(Hz)值差异无统计学意义(P>0.05)。
    结论:在BN患者中,咽喉反流机制对声带检查和声音分析参数造成负面影响,导致主观不满。
    OBJECTIVE: The present study aims to examine subjectively and objectively the voice changes in bulimia nervosa (BN) patients at different stages of treatment.
    METHODS: The study was conducted with a study group including 10 patients followed up with a diagnosis of BN and a control group consisting of 10 healthy participants of a similar age group without eating disorders. The Reflux Symptom Index (RFS) was used for stroboscopic evaluation. The fundamental frequency (F0), jitter, shimmer, and noise-to-harmonics ratio were determined during acoustic voice analysis. Maximum phonation time was analyzed. A subjective evaluation was performed using the Voice Handicap Index-10 (VHI-10).
    RESULTS: Jitter, shimmer, VHI-10 score, and RFS values showed a statistically significant difference in the patient and control groups (P < 0.05). The mean values of jitter, shimmer, VHI-10 score, and RFS were higher in the patient group than in the control group. Maximum phonation time did not differ between groups (P > 0.05) Age and F0 (Hz) values showed no statistically significant difference in the patient and control groups (P > 0.05).
    CONCLUSIONS: In BN patients, the laryngopharyngeal reflux mechanism causes negative effects on vocal cord examination and acoustic sound analysis parameters, leading to subjective dissatisfaction.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

    求助全文

  • 文章类型: Journal Article
    目的:检查患者对咽喉反流诊断的经验以及导致患者感觉过程困难的因素。
    方法:对18岁以上报告诊断为咽喉反流的个体进行了一项32个问题的匿名调查。该调查包含有关诊断检查期间的人口统计学和个人经历的问题,以及通用的简短患者经历问卷。计算所有变量的百分比。使用Kendall等级相关系数来测量咽喉反流检查与诊断难度之间的关联强度和方向。
    结果:在232名受访者中,59.9%报告诊断过程困难。发现感觉到的咽喉反流诊断困难与以下因素之间存在强烈的正相关:就诊的医生总数(τb=0.483,p<0.001),症状发作时间(τb=0.300,p<0.001),和从首次就诊开始的时间(τb=0.479,p<0.001)。来自通用的短患者经历问卷的结果显示,诊断难度与以下因素之间存在中度负相关:医生的感知能力(τb=-0.228,p<0.001),医生关心病人的感觉(τb=-0.253,p<0.001),医生对患者的感知兴趣(τb=-0.259,p<0.001),和与医生相互作用的时间(τb=-0.226,p<0.001)。
    结论:受访者报告难以诊断为咽喉反流。这与接受诊断的时间增加有关,看到的医生数量增加,以及与医患关系相关的因素。医师可以通过专注于与交互式患者预约的清晰沟通来改善患者体验,并安排高产量的诊断测试。
    OBJECTIVE: To examine the patient experience of laryngopharyngeal reflux diagnosis and factors that contributed to perceived difficulty with the process.
    METHODS: A 32-question anonymous survey was administered to individuals over 18 years old who reported a diagnosis of laryngopharyngeal reflux. The survey contained questions regarding demographics and individuals\' experiences during the diagnostic workup along with the generic short patient experiences questionnaire. Percentages were calculated for all variables. Kendall rank correlation coefficient was performed to measure the strength and direction of association between laryngopharyngeal reflux workup and perceived difficulty with diagnosis.
    RESULTS: Of the 232 respondents, 59.9 % reported difficulty with the diagnostic process. Strong positive correlations were found between perceived difficulty with laryngopharyngeal reflux diagnosis and the following factors: total number of physicians seen (τb = 0.483, p < 0.001), time from symptom onset (τb = 0.300, p < 0.001), and time from first physician visit (τb = 0.479, p < 0.001). Results from the generic short patient experiences questionnaire showed moderate negative correlations between perceived difficulty with diagnosis and the following factors: perceived competence of physician (τb = -0.228, p < 0.001), perception that the physician cared for the patient (τb = -0.253, p < 0.001), perceived interest the physician had in the patient (τb = -0.259, p < 0.001), and time interacting with the physician (τb = -0.226, p < 0.001).
    CONCLUSIONS: Respondents report difficulty being diagnosed with laryngopharyngeal reflux. This correlates with increased time to receive a diagnosis, increased number of physicians seen, and factors related to the patient-physician relationship. Physicians can improve patient experience by focusing on clear communication with interactive patient appointments, and scheduling high yield diagnostic tests.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

    求助全文

  • 文章类型: Case Reports
    由于舒适,在全身麻醉(GA)期间使用声门上气道(SGA)。某些并发症是可能的,如胃胀。发现反流的胃内容物肺吸入的发生率为0.02%。在使用SGA和气管插管之间,未发现胃返流发生率的差异。我们报告了一例使用I-gel®进行GA的患者的胃胀和肺不张。
    一名63岁女性患者在GA下使用SGA(I-gel®3号)对脚踝进行了三次关节固定术。手术后,她患有恶心和腹胀。胸部X光片显示,她的胃中大量空气导致胃扩张,导致左半膈抬高和肺不张。
    此病例说明,在长时间手术中使用I-gel®可能会导致SGA错位以及胃吹气和肺不张。
    BACKGROUND: Supraglottic airways (SGAs) are used during general anesthesia (GA) due to comfort. Certain complications are possible, such as gastric distension. The incidence of pulmonary aspiration of regurgitated gastric contents was found to be 0.02%. A difference in the incidence of gastric regurgitation was not identified between the use of SGAs and endotracheal intubation. We report a case of gastric distension and atelectasis in a patient in whom an I-gel® was used for GA.
    METHODS: A 63-year-old female patient underwent triple arthrodesis on her ankle under GA using an SGA (I-gel® size 3). After surgery, she suffered from nausea and abdominal bloating. A chest radiograph revealed that a large amount of air in her stomach had caused gastric distention, which resulted in left hemidiaphragm elevation and atelectasis.
    CONCLUSIONS: This case illustrates that the use of I-gel® in prolonged surgeries may result in malposition of the SGA and gastric insufflation and atelectasis.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Pubmed)

  • 文章类型: Journal Article
    咽喉反流(LPR)的病理生理学及其对声带的影响尚不清楚,但可能涉及对声带屏障功能的酸损伤。两种不同的成分包括声带屏障功能:粘液屏障和紧密连接。保留在上皮微突起上的粘液通过中和酸性损伤来保护声带的内部。紧密连接控制细胞之间的通透性。在这里,我们开发了一种体外实验系统来评估酸性损伤和声带屏障功能的修复。我们首先建立了大鼠声带上皮的体外模型,该模型可以在屏障功能成熟后至少存活一周。该模型可以重复评估声带修复过程的过程。然后,进行了损伤实验,其中将声带细胞暴露于酸性胃蛋白酶的5分钟处理,从而损伤紧密连接和细胞表面微突出物。两人在受伤后的一天内就痊愈了。将单独用酸处理的声带细胞与用酸性胃蛋白酶处理的细胞进行比较表明,酸性胃蛋白酶对细胞间通透性的影响强于单独的酸。而胃蛋白酶对微突出物影响不大。该结果表明,胃蛋白酶的蛋白水解作用对基于蛋白质的紧密连接的影响比对微突出物中的磷脂的影响更大。该实验系统有助于更好地理解化学或物理损伤后的声带修复过程,以及由于LPR发病机制导致的语音问题。
    The pathophysiology of laryngopharyngeal reflux (LPR) and its impact on the vocal fold is not well understood, but may involve acid damage to vocal fold barrier functions. Two different components encompass vocal fold barrier function: the mucus barrier and tight junctions. Mucus retained on epithelial microprojections protects the inside of the vocal fold by neutralizing acidic damage. Tight junctions control permeability between cells. Here we developed an in vitro experimental system to evaluate acidic injury and repair of vocal fold barrier functions. We first established an in vitro model of rat vocal fold epithelium that could survive at least one week after barrier function maturation. The model enabled repeated evaluation of the course of vocal fold repair processes. Then, an injury experiment was conducted in which vocal fold cells were exposed to a 5-min treatment with acidic pepsin that injured tight junctions and cell surface microprojections. Both of them healed within one day of injury. Comparing vocal fold cells treated with acid alone with cells treated with acidic pepsin showed that acidic pepsin had a stronger effect on intercellular permeability than acid alone, whereas pepsin had little effect on microprojections. This result suggests that the proteolytic action of pepsin has a larger effect on protein-based tight junctions than on phospholipids in microprojections. This experimental system could contribute to a better understanding of vocal fold repair processes after chemical or physical injuries, as well as voice problems due to LPR pathogenesis.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

    求助全文

公众号