Medicine by Alexandros G. Sfakianakis,Anapafseos 5 Agios Nikolaos 72100 Crete Greece,00306932607174,00302841026182,alsfakia@gmail.com
Αναζήτηση αυτού του ιστολογίου
Πληροφορίες
Ετικέτες
Τρίτη 5 Φεβρουαρίου 2019
Clinical relevance of human papillomavirus outside of oropharynx
http://bit.ly/2RHfbwP
Photodynamic therapy in head and neck cancer: indications, outcomes, and future prospects
http://bit.ly/2WJ9baQ
Medial femoral condyle free flap for head and neck reconstruction
http://bit.ly/2RIpcKa
Quality of life after microvascular mandibular reconstruction for osteoradionecrosis—A prospective study
Abstract
Background
Reconstructive surgery for mandibular osteoradionecrosis is increasing; however, evidence regarding the impact on health‐related quality of life is lacking. The current exploratory study prospectively investigates whether resection with reconstruction is associated with changes in HRQoL parameters for these patients.
Methods
Seventeen patients underwent microvascular reconstruction for mandibular osteoradionecrosis between 2012 and 2015, and 16 completed the EORTC quality of life questionnaires QLQ‐C30 and QLQ‐H&N35 1 month before and 1 year after surgery.
Results
Increases in emotional (P = 0.01) and social functioning (P = 0.004) were observed, together with improvements in the fatigue (P = 0.04), appetite loss (P = 0.02) and pain (P = 0.02) scores, as evaluated by the QLQ‐C30. Pain reduction was further confirmed by the QLQ‐H&N35 (P = 0.04), which also showed improved scores for feeling ill (P = 0.001) and sexual difficulties (P = 0.04).
Conclusion
This exploratory study suggests that microvascular reconstruction after mandibular osteoradionecrosis may improve HRQoL, with an emphasis on pain reduction; however, further studies are needed.
http://bit.ly/2Gr5wJ4
Evaluating the Predicted Impact of Changes to the AJCC/TMN Staging System for Differentiated Thyroid Cancer (DTC): A prospective observational study of patients in South East Scotland
Abstract
Objectives To assess the impact of the eighth edition AJCC/TMN staging system on patients with new diagnoses of differentiated thyroid cancers presenting to our regional multi‐disciplinary team meetings. Design We analysed Endocrine Cancer MDT meeting records from 2009‐2015 to identify all patients in the region presenting with a new diagnosis of differentiated thyroid cancer. We re‐staged patients according to the eighth edition AJCC/TNM staging classification and analysed the survival outcomes of patients in each stage under the seventh and eighth systems. Setting Tertiary referral centre in South East Scotland (NHS Lothian). Participants Three hundred and sixty one patients were newly diagnosed with DTC within South East Scotland during the study period and met our inclusion criteria. Main outcome measures Mortality at any time during follow‐up Results In total 119/361 (33%) patients were re‐staged when the eighth edition AJCC/TMN system was applied. The number of patients classified as having advanced stage (III/IV) disease fell from 76 (21%) to 8 (2%). The most common reason for down‐staging was re‐classification of tumour size, a factor in 96 (80.7%) down‐staged patients. The five‐year disease specific survival of the cohort overall was 98%. Overall 7 (1.9%) thyroid cancer –related deaths occurred during follow‐up, three of whom were down‐staged. Conclusions On implementation of the eighth edition of the AJCC/TMN staging system, we expect many patients who would previously have been considered to have advanced thyroid cancer will now be classified as early stage. This will accurately reflect their excellent survival outcomes.
This article is protected by copyright. All rights reserved.
http://bit.ly/2MPiW2w
Cost‐effectiveness of trans‐nasal endoscopic sphenopalatine artery ligation vs. arterial embolisation for intractable epistaxis: long‐term analyses
Summary
Objectives
Trans‐nasal endoscopic sphenopalatine artery ligation (TESPAL) and endovascular arterial embolisation both provide excellent success rates for intractable epistaxis. Recent economic models suggest that TESPAL could be a cost‐saving strategy. Our main aim was to perform cost‐effectiveness analyses on TESPAL compared to embolisation to treat patients with epistaxis.
Design
We performed a retrospective, monocentric, comparative analyses on patients referred to our center and treated with embolisation or TESPAL.
Setting
This economic evaluation was carried out from a payer's perspective (i.e., French National Health Insurance) within a time horizon of 12 months.
Participants
Thirty‐seven TESPAL procedures and thirty‐nine embolisation procedures to treat intractable epistaxis were used in the analyses.
Main outcome measures
The primary outcome is presented as the cost per 1% of non‐recurrence. Effectiveness was defined as avoiding recurrence of epistaxis during the 1‐year follow‐up. Cost estimates were performed from the payer's perspective.
Results
Hospitalisation costs were higher for embolisation compared to TESPAL (5,972 vs. 3,769 euros). On average, hospitalization costs decreased by 41% when a patient was treated by TESPAL compared to an embolisation strategy (p= 0.06). The presence of comorbidities increased hospitalization costs by 79% (p=0.04). TESPAL enabled 1,867€ to be gained in intractable epistaxis.
Conclusions
The outcomes from our decision model confirm that TESPAL is more cost‐effective for patients with intractable epistaxis.
This article is protected by copyright. All rights reserved.
http://bit.ly/2DUWLFu
Can anatomical assessment of hypopharyngolarynx in awake patients predict obstructive sleep apnea?
Objectives/Hypothesis
To assess the relationships between laryngeal and hypopharyngeal morphology and obstructive sleep apnea‐hypopnea syndrome (OSAHS) in awake patients.
Study Design
Prospective study.
Methods
Awake flexible fiberoptic laryngoscopy and sleep studies were performed in 80 patients for snoring or OSAHS suspicion. Endoscopic videos were reviewed by two examiners to assess morphological characteristics of hypopharynx and larynx using a standardized examination of appearance, shape and position of epiglottis, shape of retropharyngeal‐epiglottic aerospace (RPEA), modified Cormack‐Lehane score, and length ratios of the hypopharynx and epiglottis. The multivariate logistic regression model was used to assess independent predictors of moderate/severe OSAHS.
Results
The interrater agreements were moderate for epiglottis appearance (κ = 0.52), epiglottis form (κ = 0.66), and epiglottis position (κ = 0.49), but fair for the shape of RPEA (κ = 0.26) and modified Cormack‐Lehane scoring (κ = 0.38). The presence of a mega‐epiglottis was significantly correlated with the severity of OSAHS (P < .05). By multivariate logistic regression analysis, independent predictors of moderate/severe obstructive sleep apnea were mega‐epiglottis (adjusted odds ratio [aOR]: = 4.78, 95% confidence interval [CI]: 1.23‐18.56, P = .024), modified Cormack‐Lehane score of 2 (aOR: 15.3, 95% CI: 1.8‐130.3, P = .012), or modified Cormack‐Lehane score of 3 (aOR: 10.03, 95% CI: 1.3‐78.2, P = .03) and aging (aOR = 1.07, 95% CI: 1.01‐1.14, P = .025).
Conclusions
Routine flexible fiberoptic laryngoscopy performed by otorhinolaryngologists in awake patients may help to detect some predictors of OSAHS such as presence of mega‐epiglottis, and modified Cormack‐Lehane score of 2 or more. Investigation of sleep disorders should be proposed in these patients.
Level of Evidence
2 Laryngoscope, 2019
http://bit.ly/2RIvlGc
Cost burden and resource utilization in patients with chronic rhinosinusitis and nasal polyps
Objectives/Hypothesis
Establish treatment patterns and economic burden in US patients with chronic rhinosinusitis with nasal polyposis (CRSwNP) versus without chronic rhinosinusitis (CRS). Determine comparative costs of subgroups with high clinical burden.
Study Design
Observational, retrospective, case‐control study.
Methods
This study matched patients with CRSwNP to patients without CRS (1:1) using the Truven Health MarketScan US claims database. Categorical and continuous variables were compared using McNemar test and paired t test (normal distribution) or Wilcoxon signed rank tests (non‐normal distribution). Within subgroups, χ2 and Wilcoxon or t tests were used (normal distribution).
Results
There were 10,841 patients with CRSwNP and 10,841 patients without CRS included. Mean age in the CRSwNP cohort was 45.8 years; 56.2% were male. During follow‐up, patients with CRSwNP had an increased diagnosis of asthma versus patients without CRS (20.8% vs. 8.1%, respectively; P < .001). Annual incremental costs were $11,507 higher for patients with CRSwNP versus those without CRS. Costs were higher in subgroups of patients with CRSwNP undergoing functional endoscopy sinus surgery (FESS), with a comorbid diagnosis of asthma, receiving oral corticosteroids, or macrolides versus the overall CRSwNP group. Patients with CRSwNP undergoing FESS had the highest costs of the four subgroups ($26,724, $22,456, $20,695, and $20,990, respectively).
Conclusions
Annual incremental costs were higher among patients with CRSwNP versus without CRS. Patients with CRSwNP with high clinical burden had higher overall costs than CRSwNP patients without.
Level of Evidence
NA Laryngoscope, 2019
http://bit.ly/2WK59Pb
Cost and efficiency of myringotomy procedures in minor procedure rooms compared to operating rooms
Objectives
Minor pediatric surgeries performed in the minor procedure room (MPR) may be more time efficient and less costly compared to those performed in the operating room (OR).
Study Design
Retrospective review.
Methods
This was a retrospective study on cost and efficiency differences of bilateral myringotomy with tube insertions performed in the MPR versus the OR. Charts were reviewed from June 2015 to May 2017. Cost data was based on supply cost and case costing of medical personnel including nurses, aides, and anesthesia assistants.
Results
Two hundred eighteen patients were included in the study. The median age was 2.7 years (range: 0.8–16.7), and there were no differences in gender between locations. One hundred twenty‐three patients had surgery in the MPR (56.4%), and 95 had surgery in the OR (43.6%). The median length of time in the procedure room was 11 minutes shorter for patients who underwent surgery in the MPR (12.0 minutes, range: 3.0–33.0) compared to patients in the OR (23.0 minutes, range: 11.0–52.0; P < .0001). Median hospital stay (2.0 hours vs. 4.3 hours; P < 0.0001) and median patient turnover time (6.0 minutes vs. 14.0 minutes; P < .0001) was shorter in the MPR compared to OR. The total overall cost of a myringotomy with tube insertion, including labor and supply cost, was $189.41 in the MPR compared to $468.56 in the OR, a difference of $279.15 per case.
Conclusion
Bilateral myringotomy with tube insertions are more time and cost‐efficient when performed in the MPR. This study supports the need for increased availability of MPR time for appropriate surgeries.
Level of Evidence
3. Laryngoscope, 2019
http://bit.ly/2RGn3yw
Building a Renewed ImaGe After Head & Neck Cancer Treatment (BRIGHT) 2.0
Interventions: Behavioral: BRIGHT; Behavioral: Active Control
Sponsor: Medical University of South Carolina
Not yet recruiting
http://bit.ly/2SxFpX2
Diagnostic Significance of FDG PET/CT Dynamic Imaging in Detecting Metastatic Lymph Nodes With Papillary Thyroid Cancer.
Interventions: Diagnostic Test: 18F-FDG PET/CT dynamic scan; Diagnostic Test: B-ultrasonography
Sponsor: Fifth Affiliated Hospital, Sun Yat-Sen University
Recruiting
http://bit.ly/2Gr9wJl
Paclitaxel (Albumin Bound),Bleomycin And Cisplatin Or Carboplatin for Recurrent Or Metastatic Squamous Cell Carcinoma Of The Head And Neck
Intervention: Drug: PaclitaxelPaclitaxel (Albumin Bound),Bleomycin combined with Cisplatin or Carboplatin
Sponsor: Sun Yat-sen University
Not yet recruiting
http://bit.ly/2SuYMQH
Weekly Plasma EBV DNA for Non-metastatic Nasopharyngeal Carcinoma
Intervention:
Sponsor: The University of Hong Kong
Recruiting
http://bit.ly/2Gr9fGj
A Study to Assess the Safety, Tolerability and Pharmacokinetics of AZD9977 in Japanese Healthy Participants With Single and Multiple Ascending Dose Administration
Interventions: Drug: AZD9977; Drug: Placebo
Sponsors: AstraZeneca; Parexel
Recruiting
http://bit.ly/2Sza1HE
Statin use associated with improved overall and cancer specific survival in patients with head and neck cancer
Publication date: March 2019
Source: Oral Oncology, Volume 90
Author(s): Abhinav Gupta, William Stokes, Megan Eguchi, Mohammad Hararah, Arya Amini, Adam Mueller, Rustain Morgan, Cathy Bradley, David Raben, Jessica McDermott, Sana D Karam
Abstract
Objectives
Studies have shown the utility of lipid-lowering agents in improving outcomes in various cancers. We aim to explore how statins affect overall survival and cancer specific survival in head and neck cancer patients using population-based datasets.
Patients and methods
Using the Surveillance, Epidemiology, and End Results (SEER)-Medicare linked dataset, we separated HNC patients into three groups: those with no hyperlipidemia (nH), those with hyperlipidemia and not taking a statin (HnS), and those with hyperlipidemia and taking a statin (H + S). Overall survival (OS) and cancer specific survival (CSS) were compared between the three groups based on disease subsite (oral cavity, oropharynx, and other) using Kaplan-Meier and multivariate Cox regression analysis (MVA), controlling for demographic, socioeconomic, staging, treatment, and comorbidity covariates. Using Pearson chi-square analysis, we also compared the incidence of cancer-related toxicity events.
Results
There were 495 nH, 567 HnS, and 530 H + S patients. H + S patients had superior OS and CSS (73.0, 81.2%) relative to nH (58.6, 69.1%) and HnS groups (61.7, 69.2%) (p < 0.01). On MVA, H + S patients showed improved OS (p < 0.01) and CSS (p = 0.04) compared to nH (HR = 1.64, 1.56) and HnS (HR = 1.40, 1.37). MVA stratified by subsite yielded similar results for oral cavity and oropharyngeal disease. Toxicity-related events did not differ significantly between the groups.
Conclusion
HNC patients with hyperlipidemia and taking a statin demonstrated improved outcomes compared to nH and HnS patients, further supporting statins' role as a potential adjuvant anti-neoplastic agent in HNC. Further prospective studies to investigate the impact of statins on HNC outcomes are warranted.
http://bit.ly/2G9DHW9
Editorial Board/Aims & Scope
Publication date: February 2019
Source: Oral Oncology, Volume 89
Author(s):
http://bit.ly/2DavPzI
Neonatal Vocal Fold Motion Impairment After Complex Aortic Arch Reconstruction: What Should Parents Expect After Diagnosis?
Publication date: Available online 5 February 2019
Source: International Journal of Pediatric Otorhinolaryngology
Author(s): Jennifer Rodney, Jess Thompson, Michael Anderson, Harold Burkhart
Abstract
Objectives
To study the incidence, sequelae, follow up, and recovery rate of vocal fold motion impairment (VFMI) after complex aortic arch reconstruction in neonates.
Study design
Retrospective case control study.
Methods
We retrospectively evaluated 105 neonates who underwent complex aortic arch reconstruction from 2014-2016. We compared patients that did have VFMI compared to a control group of patients with normal vocal fold movement. Descriptive statistics were computed for all demographic and clinical variables by treatment group.
Results
36% of patients were evaluated for VFMI (n=38) by an otolaryngologist. The incidence of VFMI was 22% (n= 23). Females were more likely to have VFMI (p= 0.02). Aspiration was more common in patients with VFMI (p=0.006). The difference in age, weight, incidence of pneumonia, nasogastric tube, gastrostomy, total length of stay, genetic anomaly, and reintubation was not significant between the VFMI group and control group (p> 0.05). Tracheostomy was not performed in any patients with unilateral paralysis. Only 61% of patients followed up in clinic (n=14). 64% of patients showed improvement or resolution (n=9). Average time to improvement was 4.8 months. Average time to complete resolution was 10.5 months.
Conclusions
VFMI after complex aortic arch reconstruction is relatively common. Despite increased aspiration in patients with VFMI, pneumonia did not occur at all in either group. Tracheostomy was not necessary in any patients with a unilateral paralysis. Most patients showed an improvement in the VFMI within 5 months of surgery. Our data support the need for otolaryngology follow-up.
http://bit.ly/2G9Am9v
The effects of premature infant oral motor intervention (PIOMI) on oral feeding of preterm infants: a randomized clinical trial
Publication date: Available online 5 February 2019
Source: International Journal of Pediatric Otorhinolaryngology
Author(s): Hadiseh Ghomi, Fariba Yadegari, Farin Soleimani, Brenda Lessen Knoll, Mahdi Noroozi, Ali Mazouri
Abstract
Objective
Given the increase in the birth and survival rate of the premature infants, a need for supportive health care services becomes more evident. The goal of the present study was to examine the effectiveness of the Premature Infant Oral Motor Intervention (PIOMI) in the feeding progression and early intervention. This study was a double-blind randomized clinical trial.
Methods
This clinical trial included premature infants in the neonatal intensive care units (NICUs) of two hospitals in Tehran, who were randomly assigned into intervention and control group, each containing 15 infants. The PIOMI was administered to the intervention group in the course of 10 days. The infants in the control group received routine nursing services. Repeated measures ANOVA (RMA) were analyzed. The postmenstrual age and weight of the participants were examined at the time points of accomplishing one, four, and eight oral feedings a day and at the time of hospital discharge.
Results
The intervention group reached the first oral feeding (with a mean of 7.2 days) and eight oral feeding (with a mean of 13.47 days) earlier than the control group. The length of hospital stay in intervention group was significantly shorter (P=0.03). RMA wasn't statistically significant between groups for weight (F: 0.76, P: 0.39, ŋ: 0.03); but within-subjects test showed that change of the weight over time and for interaction of time and group was significant (F: 74.437, P <0.001, ŋ: 0.727). The effect size of infants' age in the measurement times was 91%.
Conclusion
the results revealed that PIOMI is a fruitful method for premature infants. We suggest that PIOMI can be integrated in feeding rehabilitation programs of the premature infants born with gestational age of as young as 26-29 weeks, and applied at 29 weeks postmenstrual age (PMA).
The clinical trial registration number
IRCT20180410039260N1.
http://bit.ly/2DdkUFq
Regulatory T Lymphocytes are Associated with Increased Nasopharyngeal Colonization in Children
Publication date: Available online 5 February 2019
Source: International Journal of Pediatric Otorhinolaryngology
Author(s): Jessica Jane Browne, Evan Howard Matthews, Andrew William Taylor-Robinson, Jennelle Maree Kyd
Abstract
Objectives
Regulatory T lymphocytes (Treg) have been linked to survival of commensal bacteria at mucosal sites, but their presence and role in chronic otitis media (COM) and their response to otopathogens has not been evaluated previously. We investigated the association between Treg lymphocytes and otopathogens in COM prone and non-COM prone children.
Methods
Forty children, 2 to 7 years of age, scheduled for adenoidectomy were enrolled into COM (n = 20) or non-COM (n = 20) groups. Adenoid biopsy and nasopharyngeal aspirate bacteriology were assessed by conventional culture techniques. Peripheral blood and adenoid lymphocytes were stained with viability stain, monoclonal anti-CD19, anti-CD3, anti-CD4, anti-CD8, anti-CD25 and anti-CD127. Cells were stained intracellularly with monoclonal anti-FoxP3 and then quantified by flow cytometry.
Results
Children with nasopharyngeal otopathogen-positive culture had significantly more circulating CD3+CD4+FoxP3+CD25hi+CD127lo+ lymphocytes (M = 4.4%) compared to culture-negative children (M = 3.1%, p = 0.005). Circulating CD19+ lymphocytes were significantly increased in children with positive Moraxella catarrhalis nasopharyngeal culture (M = 12.4%) compared to culture-negative children (M = 8.6%, p = 0.006). Adenoid-derived lymphocytes were not significantly different in children with any positive nasopharyngeal culture compared to negative culture. Lymphocyte subsets were not significantly different between COM and non-COM prone children.
Conclusion
Clinically-detectable otopathogen nasopharyngeal culture is positively associated with Treg lymphocytes, potentially inducing suppressive effector responses to promote colonization and infection chronicity. This finding supports further investigation of Treg lymphocyte activity and influence on upper airway colonization of young children.
http://bit.ly/2GchK90
Sleep disordered breathing in children – diagnostic questionnaires, comparative analysis
Publication date: Available online 5 February 2019
Source: International Journal of Pediatric Otorhinolaryngology
Author(s): Marcin Burghard, Eliza Brożek-Mądry, Antoni Krzeski
Abstract
Study Objectives
The purpose of this work is to present available questionnaires enabling diagnostic screening when obstructive sleep disordered breathing (SDB) in a child is suspected or its effects are observed and polysomnography is unavailable. These questionnaires are designed to facilitate further diagnostic process or even therapeutic decisions, aid in selecting the optimal one for the specified conditions of clinical practice, with the caveat that none of these represents a diagnostic equivalent to PSG.
Methods
The questionnaires subjected to analysis: Pediatric Sleep Questionnaire (PSQ), Sleep Clinical Record (SCR), OSA-18 score (OSA-18), Brouilette score (BS), "I'm Sleepy" questionnaire (I'M SLEEPY), and "Sleeping Sleepless Sleepy Disturbed Rest" questionnaire (SSSDR).
The comparative analysis of questionnaires included the following parameters: simplicity and time of administer; necessity to engage a physician or other trained individual; taking into account examination of the patient; type and scope of considered symptoms and consequences of obstructive SDB, sensitivity, specificity, recommendations of the guidelines.
Results
Seven questionnaires were subjected to analysis with presentation of their similarities and differences. Six out of seven were evaluated as simple in administration. Time required to fulfill the questionnaires ranged between 1 and 60 minutes. Three of them involved a physician or a trained personnel. Physical examination was necessary in two out of seven questionnaires. Sensitivity was estimated in 5 of them and ranged between 59 and 96%. Specificity ranged between 46 and 72%.
Conclusions
Several questionnaires enabling quick, simple, and inexpensive screening for OSAS have been created. Four (of the seven analyzed) questionnaires may be useful in diagnosis of obstructive SDB in children – two follow current (2015) recommendations. However, there is a need for further work on optimizing such tools, particularly on improving their specificity.
http://bit.ly/2DdkNtu
Using Anxiolytics in a Pediatric Otolaryngology Clinic to Avoid the Operating Room
Publication date: Available online 5 February 2019
Source: International Journal of Pediatric Otorhinolaryngology
Author(s): Quinn Orb, Aida Rezaie, Sheldon Furst, Jeremy D. Meier, Albert H. Park
Abstract
Introduction
There is increasing concern regarding the risks associated with the use of general anesthesia in pediatric patients. Many otolaryngologic procedures performed under general anesthesia can also be performed in clinic. We hypothesize that anxiolytics can aid in performing common procedures in clinic thus avoiding the need to undergo general anesthesia in the OR.
Methods
We performed a retrospective review of patients undergoing inoffice procedures with anxiolytics in our pediatric otolaryngology outpatient clinic between February 2013 and January 2017. Charts were reviewed for age, past medical history, procedure type/duration, and outcome. These results were then compared to a cohort undergoing similar procedures in the OR.
Results
A total of 34 patients underwent an in-office procedure with an anxiolytic. The success rate was 97% (33/34). The average age was 6.2 years. Six children (17%) had a known history of chromosomal abnormalities and 2 children (6%) had autism. The four most common procedures performed were cerumen impaction removal (8), flexible laryngoscopy (6), ear canal foreign body removal (5), and septal cautery (4). Performing similar procedures in the OR resulted in an average additional cost of $822.
Conclusions
Performing procedures with anxiolytics in a pediatric otolaryngology clinic is safe, expeditious, and cost-effective. Anxiolytics can provide an effective alternative to general anesthesia.
http://bit.ly/2G9YGIs
Genetic susceptibility to aminoglycoside ototoxicity
Publication date: Available online 4 February 2019
Source: International Journal of Pediatric Otorhinolaryngology
Author(s): Tien Nguyen, Anita Jeyakumar
Abstract
Introduction
Aminoglycosides are a well-known clinically relevant antibiotic family used to treat bacterial infections in humans and animals and can produce toxic side effects. Aminoglycoside-induced hearing loss (HL) has been shown to have a genetic susceptibility. Mitochondrial DNA mutations have been implicated in inherited and acquired hearing impairment.
Objective
Literature review of genetic mutations associated with aminoglycoside-induced ototoxicity.
Methods
PubMed was accessed from 1993 to 2017 using the search terms "aminoglycoside, genetic, ototoxicity, hearing loss". Exclusion criteria consisted of a literature in a language other than English, uncompleted or ongoing studies, literature with non-hearing related diseases, literature on ototoxicity due to cisplatin/carboplatin based chemotherapy, literature on ototoxicity from loop diuretics, animal studies, literature studying oto-protective agents, and literature without documented aminoglycoside exposure.
Results
108 articles were originally identified, and 25 articles were included in our review. Mitochondrial 12S rRNA mutations were identified in all 25 studies in a total of 220 patients. Eight studies identified A1555G mutation as primary genetic factor underlying HL in cases of aminoglycoside-induced ototoxicity. The next most common mutation identified was C1494T.
Discussion
Mitochondrial 12s rRNA mutation A1555G was present in American, Chinese, Arab-Israeli, Spanish and Mongolian ethnicities. All mutations leading to aminoglycoside ototoxicity were mitochondrial mutations.
Conclusions
Consideration of preexisting genetic defects may be valuable in treatments involving aminoglycosides. In particular populations such as those of Chinese origin, clinicians should continue to consider the increased susceptibility to aminoglycosides.
http://bit.ly/2Ddl9jO
Bite force measurements for objective evaluations of orthodontic tooth movement-induced pain in rats
Publication date: Available online 4 February 2019
Source: Archives of Oral Biology
Author(s): Hu Long, Di Shan, Renhuan Huang, He Liu, Yang Zhou, Muyun Gao, Fan Jian, Yan Wang, Wenli Lai
Abstract
Objective
To examine the reliability of bite force for evaluating orthodontic tooth movement-induced pain in rats.
Design
Orthodontic tooth movement-induced pain was induced by mounting springs (40 g) between incisors and ipsilateral molars in male Sprague-Dawley rats. Five group sets of animals were used: for the first group set, 20 rats were randomly divided into a force group (n = 10) and a sham group (n = 10); for the second group set, 20 rats were divided into a 20-g group and a 80-g group; for the third group set, 20 rats were randomly divided into either a CFA group (complete freund's adjuvant) (n = 10) receiving periodontal injections of CFA at baseline or a control group (n = 10) receiving periodontal injections of saline at baseline; for the forth group set, 24 rats were randomly divided into the following four groups: force + saline, control + saline, force + antiNGF and control + NGF (NGF: nerve growth factor). Rats in the fifth group set were used for immunostaining against CGRP. Bite force and bite frequency were measured at baseline (day 0) and following interventions (day 1, day 3, day 5, day 7 and day 14). Two-way ANOVA with repeated measures was used for statistical analysis and a p value less than 0.05 was considered statistical significance.
Results
Our results revealed that bite force was significantly smaller in the force group than in the sham group at all time points (p < .001). As compared to the control group, periodontal injections of CFA significantly decreased bite force on the 3rd day (p < .01). Moreover, bite force was significantly higher in the force + antiNGF group than in the force + saline group (p = .01 < .05) while significantly smaller in the control + NGF group than in the control + saline group (p < .05). Bite force was similar between the force + antiNGF group and the control + saline group (p = .71 > .05) and between the control + NGF group and the force + saline group (p = .58 > .05). Similar results were found for bite frequency.
Conclusion
Bite force, an indicator of mechanical hyperalgesia, is a viable and reliable index for evaluating orthodontic tooth movement-induced pain.
http://bit.ly/2Bl7pmS
Heterogeneous localization of muscarinic cholinoceptor M1 in the salivary ducts of adult mice
Publication date: Available online 4 February 2019
Source: Archives of Oral Biology
Author(s): Atsara Rawangwong, Suthankamon Khrongyut, Surang Chomphoo, Kohtaro Konno, Miwako Yamasaki, Masahiko Watanabe, Hisatake Kondo, Wiphawi Hipkaeo
Abstract
We hypothesize variation in expression and localization, along the course of the glandular tubule, of muscarinic cholinergic receptor M1 which plays as a distinct contribution, though minor in comparison with M3 receptor, in saliva secretion. Localization of the M1 receptor was examined using immunohistochemistry in three major salivary glands. Although all glandular cells were more or less M1-immunoreactive, acinar cells were weakly immunoreactive, while ductal cells exhibited substantial M1-immunoreactivity. Many ductal cells exhibited clear polarity with higher immunoreactivity in their apical/supra-nuclear domain. However, some exhibited indistinct polarity because of additional higher immunoreactivity in their basal/infra-nuclear domain. A small group of cells with intense immunoreactivity was found, mostly located in the intercalated ducts or in portions of the striated ducts close to the intercalated ducts. In immuno-electron microscopy, the immunoreactive materials were mainly in the cytoplasm including various vesicles and vacuoles. Unexpectedly, distinct immunoreactivity on apical and basal plasma membranes was infrequent in most ductal cells. The heterogeneous localization of M1-immunoreactivity along the gland tubular system is discussed in view of possible modulatory roles of the M1 receptor in saliva secretion.
http://bit.ly/2TyKDPQ
The addition of chemotherapy to radiotherapy did not reduce the rate of distant metastases in low‐risk HPV‐related oropharyngeal cancer in a real‐world setting
Abstract
Background
Distant metastases (DM) are a leading cause of death for patients with oropharyngeal cancer (OPSCC). The objective of this study was to compare the rates of DM after chemoradiotherapy (CRT) and radiotherapy alone (RT) in patients with human papillomavirus (HPV)‐positive and HPV‐negative OPSCC.
Method
In a retrospective population‐based study of 525 patients across Ontario, Canada, in 1998/99/03/04, we compared treatment effectiveness using cumulative incidence function curves and cause‐specific Cox regression models.
Results
Sixty of 525 patients developed DM. There was no difference in rates (overall 10%‐15%) between HPV‐positive and HPV‐negative patients or between CRT‐ and RT‐treated patients. CRT reduced the risk of DM for the 15% of all HPV‐positive patients with higher risk (T4 and/or N3) and not for HPV‐negative patients (hazard ratio, 1.82 [0.65‐5.07]).
Conclusion
The addition of platin‐based chemotherapy to conventional RT did not decrease the rates of DM in the majority of patients with HPV‐positive or in HPV‐negative OPSSC.
http://bit.ly/2MPJalF
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Publication date: Available online 25 July 2018 Source: Journal of Photochemistry and Photobiology B: Biology Author(s): Marco Ballestr...
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Editorial AJR Reviewers: Heartfelt Thanks From the Editors and Staff Thomas H. Berquist 1 Share + Affiliation: Citation: American Journal...
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Publication date: Available online 28 September 2017 Source: Actas Dermo-Sifiliográficas Author(s): F.J. Navarro-Triviño