scholarly journals Dysfunction of Nrf2-ARE Signaling Pathway: Potential Pathogenesis in the Development of Neurocognitive Impairment in Patients with Moderate to Severe Obstructive Sleep Apnea-Hypopnea Syndrome

2018 ◽  
Vol 2018 ◽  
pp. 1-15 ◽  
Author(s):  
Li Zhou ◽  
Ruoyun Ouyang ◽  
Hong Luo ◽  
Yating Peng ◽  
Ping Chen ◽  
...  
Keyword(s):  
Obstructive Sleep Apnea ◽  
Sleep Apnea ◽  
Signaling Pathway ◽  
Neurocognitive Impairment ◽  
Apnea Hypopnea Index ◽  
Heme Oxygenase 1 ◽  
Severe Obstructive Sleep Apnea ◽  
Obstructive Sleep ◽  
Hypopnea Syndrome ◽  
Nrf2 Protein

The present study investigated the nuclear factor erythroid 2-related factor 2- (Nrf2-) antioxidant response element (ARE) signaling pathway in patients with moderate to severe obstructive sleep apnea-hypopnea syndrome (OSAHS). Their correlation with neurocognitive impairment metrics was investigated to explore potential pathogenesis in OSAHS. Forty-eight patients with OSAHS and 28 controls underwent testing with the Epworth Sleep Scale (ESS), MATRICS Consensus Cognitive Battery (MCCB), Stroop Color and Word Test, polysomnography (PSG), and measurements of the concentration of plasma superoxide dismutase (SOD) and thioredoxin (Trx). Further, 20 pairs of matched patients with OSAHS and controls were selected for measurement of the expression (protein and mRNA) of Nrf2 and of its downstream antioxidase, heme oxygenase-1 (HO-1), in peripheral mononuclear cells (PBMCs). Finally, correlations between neurocognitive impairment and the above metrics were analyzed. Expression of Nrf2 and HO-1 mRNA and protein in the PBMCs, as well as plasma SOD and Trx levels, were significantly reduced in patients with OSAHS. After adjusting for education, sex, age, and smoking index, the expression of Nrf2-ARE signaling pathway proteins (or mRNA) was closely correlated with sleep respiratory parameters. An inverse relationship was demonstrated between the expression of nuclear Nrf2 in PBMCs, concentration of plasma SOD and Trx, and apnea-hypopnea index (AHI) in patients with OSAHS. Trx, nuclear Nrf2 protein, and HO-1 protein were also negatively correlated with the percent of time that SaO2 was less than 90% (TSat90). Total Nrf2 protein level was positively correlated with AHI and TSat90 and negatively correlated with minimum SaO2 (LSaO2), while nuclear Nrf2 protein and HO-1 protein were positively correlated with LSaO2. Moreover, significant positive correlations were found between maze scores and expression of nuclear Nrf2 protein, HO-1 protein, and SOD and Trx levels. Furthermore, inverse relationships between total Nrf2 protein in PBMCs and HVLT-R and maze scores were found. Multiple linear regression showed plasma Trx concentration as a potential predictor of maze and BVMT-R scores. In conclusion, the expression of Nrf2-ARE molecules and related antioxidases is significantly decreased in patients with OSAHS and is correlated with neurocognitive dysfunction. The Nrf2-ARE signaling pathway may play a crucial role in neurocognitive impairment in patients with moderate to severe OSAHS. Further studies are needed to explore the exact mechanisms and potential treatment interventions.

scholarly journals Efficacy of Somnodent® Appliance Therapy in Moderate to Severe Obstructive Sleep Apnea Patients Somnodent® OAs for Moderate to Severe OSAHS

2021 ◽  
Vol 3 (3) ◽  
pp. 01-07
Author(s):  
Guillaume Buiret ◽  
Frederic Chidiac
Keyword(s):  
Obstructive Sleep Apnea ◽  
Sleep Apnea ◽  
Reduction Rate ◽  
Oral Appliance ◽  
Dropout Rate ◽  
Apnea Hypopnea Index ◽  
Severe Obstructive Sleep Apnea ◽  
Oral Appliances ◽  
Obstructive Sleep ◽  
Hypopnea Syndrome

Objective: Oral appliances are one of the treatments of obstructive sleep apnea hypopnea syndrome. The main objective of the study was to determine the efficacy of the Somnodent® oral appliance on Apnea-Hypopnea Index. The secondary objective was to measure the efficacy on other oxymetric parameters and to determine its tolerance and dropout rate. Methods: Efficacy results of the oral appliances based on the apnea hypopnea index, the oxygen desaturation index and the lower oxygen saturation reduction, appliance complications and dropout rates were retrospectively collected from 25 patients with a moderate to severe obstructive sleep apnea hypopnea syndrome treated by a Somnodent® oral appliance. The procedure was entirely performed by otolaryngologists. Results: The AHI with OA was more significantly reduced in patients with a higher initial apnea hypopnea index and a higher initial body mass index but reduction was not related to age and not proportional to degree of mandibular advancement. The 50%-AHI reduction rate after OA was 55.6%, the AHI ≤5/h rate after OA was 22.2%. The OA significantly reduced the mean apnea-hypopnea index (-14.3/h, p<10-5). No patient had his AHI increased with oral appliance. One patient stopped using OA mainly because of nausea. Conclusions: Somnodent® is an effective and well-tolerated treatment for moderate to severe obstructive sleep apnea hypopnea syndrome.

MAXILLOMANDIBULAR ADVANCEMENT IN THE TREATMENT OF SEVERE OBSTRUCTIVE SLEEP APNEA HYPOPNEA SYNDROME: A CASE REPORT

2020 ◽  
Vol 130 (3) ◽  
pp. e167
Author(s):  
MARK JON SANTANA SABEY ◽  
FÁBIO RICARDO LOUREIRO SATO ◽  
DANILO DE PAULA RIBEIRO BORGES ◽  
MARCOS ANTÔNIO LIMA DOS SANTOS ◽  
LUCAS CELESTINO GUERZET AYRES ◽  
...  
Keyword(s):  
Obstructive Sleep Apnea ◽  
Case Report ◽  
Sleep Apnea ◽  
Severe Obstructive Sleep Apnea ◽  
Maxillomandibular Advancement ◽  
Obstructive Sleep ◽  
Hypopnea Syndrome

Two cases of severe obstructive sleep apnea-hypopnea syndrome in which a mandibular advancing positioner was markedly effective

2003 ◽  
Vol 1 (2) ◽  
pp. 127-129 ◽  
Author(s):  
Shizumi GOTO ◽  
Yukiko SUZUKI ◽  
Noriko CHIYOJIMA ◽  
Ayako MUTA ◽  
Hideo OGINO ◽  
...  
Keyword(s):  
Obstructive Sleep Apnea ◽  
Sleep Apnea ◽  
Severe Obstructive Sleep Apnea ◽  
Obstructive Sleep ◽  
Hypopnea Syndrome

Predictors of Surgical Outcomes of Uvulopalatopharyngoplasty for Obstructive Sleep Apnea Hypopnea Syndrome

2011 ◽  
Vol 145 (6) ◽  
pp. 1049-1054 ◽  
Author(s):  
Yuan Ping Xiong ◽  
Hong Liang Yi ◽  
Shan Kai Yin ◽  
Li Li Meng ◽  
Xu Lan Tang ◽  
...  
Keyword(s):  
Obstructive Sleep Apnea ◽  
Lipid Metabolism ◽  
Sleep Apnea ◽  
Oxygen Saturation ◽  
Success Rate ◽  
Surgical Outcomes ◽  
Apnea Hypopnea Index ◽  
Glucose And Lipid Metabolism ◽  
Obstructive Sleep ◽  
Hypopnea Syndrome

Objectives. To investigate predictors of surgical outcomes of uvulopalatopharyngoplasty (UPPP) for obstructive sleep apnea hypopnea syndrome (OSAHS). Study Design. Case series with planned data collection. Setting. A university medical center. Subjects and Methods. Thirty-nine patients with OSAHS received Z-palatopharyngoplasty (ZPPP) or Han-uvulopalatopharyngoplasty (H-UPPP). All patients were evaluated within 3 months before surgery and at 6 to 12 months after surgery. Statistical analyses were conducted on preoperative parameters that could have affected surgical efficacy and outcome. Success was defined as an apnea–hypopnea index (AHI) fewer than 20 times per hour and a decrease of more than 50%. Results. The success rate was 56.4% (22/39 patients). There were statistically significant differences in AHI, lowest oxygen saturation (L-Sao2), time with oxygen saturation less than 90% (CT90), percentage of time with oxygen saturation less than 90% (CT90%), microarousal index (MI), apolipoprotein E (ApoE), high-density lipoprotein (HDL), fasting blood glucose (FBG), and Friedman OSA stage between the treatment success and failure groups. Higher success rate was predicted by lower severity, as indicated by lower AHI, CT90, CT90%, and MI; higher L-Sao2; and fewer glucose and lipid metabolism abnormalities, shown by lower ApoE and FBG and higher HDL. Conclusions. Disease severity, glucose and lipid metabolism, and Friedman OSA stage may be important predictors of surgical outcome of UPPP for OSAHS.

scholarly journals Multilevel Surgery in Moderate to Severe Obstructive Sleep Apnea Patients

2014 ◽  
Vol 6 (3) ◽  
pp. 87-91
Author(s):  
Jumroon Tungkeeratichai ◽  
Navarat Apirakkittikul ◽  
Somyos Kunachak
Keyword(s):  
Obstructive Sleep Apnea ◽  
Sleep Apnea ◽  
Wound Dehiscence ◽  
Velopharyngeal Insufficiency ◽  
Apnea Hypopnea Index ◽  
Severe Obstructive Sleep Apnea ◽  
Multilevel Surgery ◽  
Obstructive Sleep ◽  
Lateral Pharyngoplasty ◽  
Results Of Surgery

ABSTRACT Objective The aim of this study was to investigate the objective and subjective effectiveness of multilevel surgery, i.e. combined lingualplasty with new technique of partial posterior glossectomy (PPG) and uvulopalatopharyngoplasty in moderate to severe obstructive sleep apnea (OSA) patients. Study design and setting Retrospective study of 60 OSA patients undergoing multilevel surgery for the treatment of moderate to severe OSA. Results Preoperative mean apnea hypopnea index (AHI) was 57.5 events/h and preoperative mean lowest SpO2 was 79.1%. After multilevel surgery, postoperative mean AHI significantly decreased to 29.7 events/h (p < 0.001) and postoperative mean lowest SpO2 increased to 84.4% (p < 0.001). Patients had postoperative followup assessments for 1 to 3 years. Results of surgery was classified as curative in 35/60 (58.3%) of patients, and as effective, i.e. postoperative AHI less than preoperative AHI in 52/60 patients (86.7 %). Surgery was ineffective in 8/60 (13.3%) patients. Early postoperative complications comprised early velopharyngeal insufficiency (VPI) 20% (12/60), dysarthria 20% (12/60) and wound dehiscence 3.33% (2/60) but without serious complications after 1 year. Conclusion Combined lingualplasty (with new PPG) and uvulopalatopharyngoplasty (UPPP) as multilevel surgery can be an effective treatment of choice for patients with moderate to severe OSA. No mediumterm serious complication was found. Keywords Apnea hypopnea index, Glossectomy, Lateral pharyngoplasty, Multilevel surgery in obstructive sleep apnea, Obstructive sleep apnea, Uvulopalatoplasty. How to cite this article Tungkeeratichai J, Apirakkittikul N, Kunachak S. Multilevel Surgery in Moderate to Severe Obstructive Sleep Apnea Patients. Int J Otorhinolaryngol Clin 2014;6(3):8791.

Sign in / Sign up

Export Citation Format

Share Document