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1.
Nature ; 620(7972): 218-225, 2023 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-37438532

RESUMO

Retrotransposons are highly enriched in the animal genome1-3. The activation of retrotransposons can rewrite host DNA information and fundamentally impact host biology1-3. Although developmental activation of retrotransposons can offer benefits for the host, such as against virus infection, uncontrolled activation promotes disease or potentially drives ageing1-5. After activation, retrotransposons use their mRNA as templates to synthesize double-stranded DNA for making new insertions in the host genome1-3,6. Although the reverse transcriptase that they encode can synthesize the first-strand DNA1-3,6, how the second-strand DNA is generated remains largely unclear. Here we report that retrotransposons hijack the alternative end-joining (alt-EJ) DNA repair process of the host for a circularization step to synthesize their second-strand DNA. We used Nanopore sequencing to examine the fates of replicated retrotransposon DNA, and found that 10% of them achieve new insertions, whereas 90% exist as extrachromosomal circular DNA (eccDNA). Using eccDNA production as a readout, further genetic screens identified factors from alt-EJ as essential for retrotransposon replication. alt-EJ drives the second-strand synthesis of the long terminal repeat retrotransposon DNA through a circularization process and is therefore necessary for eccDNA production and new insertions. Together, our study reveals that alt-EJ is essential in driving the propagation of parasitic genomic retroelements. Our study uncovers a conserved function of this understudied DNA repair process, and provides a new perspective to understand-and potentially control-the retrotransposon life cycle.


Assuntos
Reparo do DNA por Junção de Extremidades , Replicação do DNA , DNA Circular , Parasitos , Retroelementos , Animais , Retroelementos/genética , DNA Polimerase Dirigida por RNA/genética , DNA Polimerase Dirigida por RNA/metabolismo , RNA Mensageiro/genética , RNA Mensageiro/metabolismo , Moldes Genéticos , DNA Circular/biossíntese , DNA Circular/genética , DNA Circular/metabolismo , DNA de Cadeia Simples/biossíntese , DNA de Cadeia Simples/genética , DNA de Cadeia Simples/metabolismo , Parasitos/genética , Genoma/genética
2.
Dysphagia ; 2024 Jan 25.
Artigo em Inglês | MEDLINE | ID: mdl-38273158

RESUMO

In-person swallow therapy is a primary and effective treatment for dysphagia. However, remote telehealth is now a widely utilized component of healthcare delivery for therapeutic interventions. This study evaluates potential factors influencing attendance at telehealth swallow therapy. Retrospective review of 308 patients referred for telehealth swallow therapy from April 2020-November 2021 included patient referral diagnosis, diagnostic swallowing evaluations, and sociodemographic information including age, race, health insurance, interpreter use, and socioeconomic status. Univariable and multivariable analyses compared patient and appointment factors for those who attended telehealth swallow therapy with those who did not attend. Overall, 71.8% of patients attended at least one telehealth swallow therapy appointment while 28.2% did not attend any. The most common referral diagnoses were "Cancer" (19.2%) and "Dysphagia Unspecified" (19.2%). Patients diagnosed with "Cancer" and "Muscle Tension" were significantly less likely to attend telehealth swallow therapy compared to those with "Dysphagia Unspecified," "Globus," and "Gastroesophageal Reflux Disease/Laryngopharyngeal Reflux" after adjusting for covariates. Lower socioeconomic status (p = 0.023), no interpreter use (p < 0.001), and more diagnostic evaluations (p = 0.001) correlated with higher telehealth swallow therapy attendance. Race and sex did not correlate with attendance. Most patients referred to telehealth swallow therapy attended at least one appointment. Patients with dysphagia associated with cancer and muscle tension, those with higher socioeconomic status, interpreter use, and fewer diagnostic swallowing evaluations were less likely to attend telehealth swallow therapy. Future research should investigate and compare attendance and efficacy of telehealth swallow therapy with in-person therapy.

3.
Dysphagia ; 2024 Jan 18.
Artigo em Inglês | MEDLINE | ID: mdl-38238573

RESUMO

Dysphagia negatively impacts quality of life and increases health care costs. Swallow therapy is the primary and effective treatment for dysphagia of various etiologies, and attendance is critical to success. This study seeks to identify barriers to swallow therapy attendance at a tertiary care, safety-net hospital. A total of 309 patients were referred for swallow therapy from January 1, 2018, to April 30, 2019. Patients were divided into those who "Attended" at least one swallow therapy appointment and those who "Did not Attend" any swallow therapy appointment. Demographics, socioeconomic factors, and diagnosis prompting therapy referral were compared between the two groups. Socioeconomic status (SES) was based on insurance status and income. 177 patients (57%) attended at least one swallow therapy appointment and 132 (43%) did not attend any appointments. Overall, 240 (78%) patients had public insurance and 69 (22%) had private insurance. Analysis of SES status identified 106 (34%) patients as double-low SES, 157 (51%) as low SES, and 43 (14%) as high SES. Referral diagnoses were "Dysphagia-unspecified type" (n = 119, 38%), "Cancer" (n = 66, 21%), "Neurologic" (n = 46, 15%), "Globus" (n = 29, 9%), "Aspiration" (n = 17, 6%), "Reflux" (n = 17, 6%), and "Throat Pain" (n = 15, 5%). No patient demographic factors, SES factors, or referral diagnosis correlated significantly with swallow therapy attendance. Overall, swallow therapy attendance was poor. In this group, socioeconomic and demographic factors did not significantly impact swallow therapy attendance. Future research should focus on identifying barriers to swallow care and strategies to improve attendance.

4.
Am J Otolaryngol ; 44(2): 103745, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-36586316

RESUMO

PURPOSE: The purpose of this study is to investigate if the season of diagnosis is associated with patient, tumor, and treatment characteristics within head and neck cancer. MATERIALS AND METHODS: 1406 patients with a diagnosis of head and neck cancer (HNC) were identified from a HNC database (1996-2019). Patients were classified as receiving a diagnosis in the winter, spring, summer, or fall by calendar definition. Proportions and chi-squared analysis compared patient, tumor, and treatment factors for all diagnoses. Data was subdivided and analyzed based on the primary site. RESULTS: From this cohort, 23 %, 27 %, 25 %, and 25 % of HNC patients were diagnosed in winter, spring, summer, and fall respectively with no statistically significant difference between seasons of diagnosis. When subdivided by primary site, oral cavity cancer was significantly more likely to be diagnosed in spring, salivary gland cancer was more likely to be diagnosed in winter and summer (p = 0.03 and p = 0.01 respectively). No other demographic, clinicopathologic, or management characteristics were associated with the season of diagnosis (p > 0.05 for all). CONCLUSIONS: Diagnosis of head and neck cancer does not follow a seasonal pattern. Diagnosis of oral cavity and salivary gland cancer showed a seasonal pattern. The majority of patient, tumor and management characteristics were not associated with the.


Assuntos
Neoplasias de Cabeça e Pescoço , Neoplasias Bucais , Humanos , Neoplasias de Cabeça e Pescoço/epidemiologia , Neoplasias de Cabeça e Pescoço/terapia , Estações do Ano , Bases de Dados Factuais
5.
Am J Otolaryngol ; 44(3): 103819, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-36878173

RESUMO

INTRODUCTION: Nasopharyngeal stenosis (NPS) is a rare and morbid complication following radiation therapy for nasopharyngeal carcinoma. This review provides an update on management and prognosis. METHODS: A comprehensive PubMed review using the terms "nasopharyngeal stenosis," "choanal stenosis," and "acquired choanal stenosis" was performed. RESULTS: Fourteen studies identified 59 patients who developed NPS after radiotherapy for NPC. 51 patients underwent endoscopic nasopharyngeal stenosis excision by cold technique (80-100% success). The remaining 8 underwent carbon dioxide (CO2) laser excision with balloon dilation (40-60% success). Adjuvant therapies included postoperative topical nasal steroids in 35 patients. The need for revision was 62% in the balloon dilation group, vs 17% in the excision group (p-value <0.01). CONCLUSION: When NPS occurs after radiation, primary excision of scarring is the most effective method of management with less need for revision surgery relative to balloon dilation.


Assuntos
Doenças Nasofaríngeas , Neoplasias Nasofaríngeas , Humanos , Carcinoma Nasofaríngeo/patologia , Neoplasias Nasofaríngeas/radioterapia , Neoplasias Nasofaríngeas/complicações , Constrição Patológica/etiologia , Constrição Patológica/terapia , Constrição Patológica/patologia , Nasofaringe , Doenças Nasofaríngeas/complicações , Resultado do Tratamento
6.
Am J Otolaryngol ; 44(3): 103815, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-36870112

RESUMO

OBJECTIVES: Chronic laryngitis can present with numerous symptoms, including chronic cough. Patients who do not respond to standard treatment are sometimes diagnosed with chronic airway hypersensitivity (CAH). In many centers, neuromodulators are prescribed off-label despite limited evidence of efficacy. A previous meta-analysis suggested neuromodulator therapy improved cough-related quality-of-life (QoL). This current updated and expanded meta-analysis examined whether neuromodulators reduced cough frequency, reduced cough severity, and/or improved QoL in CAH patients. DATA SOURCES: PubMed, Embase, Medline, Cochrane Review, and publication bibliographies were searched from 01/01/2000 to 07/31/2021 using MESH terms. REVIEW METHODS: PRISMA guidelines were followed. 999 abstracts were identified/screened, 28 studies were fully reviewed, and 3 met inclusion criteria. Only randomized controlled trials (RCT) investigating CAH patients with comparable cough-related outcomes were included. Three authors reviewed potentially eligible papers. Fixed-effect models and calculated pooled estimates using the Inverse-Variance method were used. RESULTS: The estimated difference in change in log coughs per hour (from baseline to intervention end) between treatment and control groups was -0.46, 95%CI [-0.97; 0.05]. Estimated change-from-baseline in VAS scores was -12.24, 95 % CI [-17.84; -6.65] lower for patients who received treatment vs placebo. Estimated change-from-baseline for LCQ scores was 2.15, 95 % CI [1.49-2.80] higher for patients who receive treatment vs placebo. Only change in LCQ score was clinically significant. CONCLUSIONS: This study tentatively suggests that neuromodulators have the potential to reduce cough symptoms associated with CAH. However, high-quality evidence is lacking. This could be due to limited treatment effect or significant limitations in the design and comparability of existing trials. A well-designed and properly powered RCT is needed to authoritatively test the efficacy of neuromodulators for the treatment of CAH. LEVEL OF EVIDENCE: Level I, evidence from a systematic review or meta-analysis of all relevant RCTs (randomized controlled trial) or evidence-based clinical practice guidelines based on systematic reviews of RCTs or three or more RCTs of good quality that have similar results.


Assuntos
Tosse , Hipersensibilidade , Humanos , Tosse/tratamento farmacológico , Doença Crônica
7.
Am J Otolaryngol ; 43(5): 103522, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35696815

RESUMO

Coronavirus disease (COVID-19) is associated with severe acute respiratory illness, often requiring intensive care unit admission. Some patients require prolonged intubation and mechanical ventilation. Post-intubation laryngotracheal stenosis occurs in approximately four to 13 % of adult patients after prolonged intubation in the absence of COVID-19 infection. The rate of COVID-19 related post-intubation laryngotracheal stenosis may be higher. Of 339 pregnant patients with COVID-19, we identified seven who required intubation and mechanical ventilation. Four of the seven developed persistent airway complications, and laryngotracheal stenosis, the most severe, was present in three. Each patient had variations in duration of intubation, endotracheal tube size, re-intubation, presence of superimposed infections, and pre-existing comorbidities. We speculate that underlying physiologic changes of pregnancy in addition to the increased inflammatory state caused by COVID-19 are associated with an increased risk of post-intubation laryngotracheal stenosis. Otolaryngology physicians should have a low threshold for considering this pathophysiology when consulting on obstetric patients who have previously been intubated with COVID-19. Otolaryngologists can educate obstetricians when caring for pregnant patients who have laryngotracheal stenosis, especially those who may require emergency airway management for obstetric indications.


Assuntos
COVID-19 , Laringoestenose , Estenose Traqueal , Adulto , Constrição Patológica , Feminino , Humanos , Intubação Intratraqueal/efeitos adversos , Laringoestenose/etiologia , Laringoestenose/terapia , Gravidez , Estenose Traqueal/etiologia , Estenose Traqueal/terapia
8.
Am J Otolaryngol ; 42(6): 103044, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34091321

RESUMO

OBJECTIVE: Otolaryngology is considered high risk for Coronavirus Disease 2019 (COVID-19) exposure and spread. This has led to a transition to telemedicine and directly impacts patient volume, evaluation and management practices. The objective of this study is to determine the impact of COVID-19 on patient characteristics in relation to outpatient attendance, ancillary testing, medical therapy, and surgical decision making. METHODS: A retrospective case series at an academic medical center was performed. Outpatient appointments from October 2019 (pre-COVID) and March 16-April 10, 2020 (COVID) were analyzed. Prevalence rates and odds ratios were used to compare demographics, visit characteristics, ancillary tests, medication prescribing, and surgical decisions between telemedicine and in-person visits, before and during COVID. RESULTS: There was a decrease in scheduled visits during the COVID timeframe, for both in-person and telemedicine visits, with a comparable proportion of no-shows. There was a higher overall percentage of Hispanic/Latino patients who received care during the COVID timeframe (OR = 1.43; 95% CI = 1.07-1.90) in both groups, although primary language was not significantly associated with attendance. There were fewer ancillary tests ordered (OR = 0.54) and more medications prescribed (OR = 1.59) during COVID telemedicine visits compared with pre-COVID in-person visits. CONCLUSION: COVID-19 has rapidly changed the use of telemedicine. Telemedicine can be used as a tool to reach patients with severe disease burden. Continued healthcare reform, expanded access to affordable care, and efficient use of resources is essential both during the current COVID-19 pandemic and beyond. LEVEL OF EVIDENCE: IV.


Assuntos
Instituições de Assistência Ambulatorial , Assistência Ambulatorial/estatística & dados numéricos , COVID-19/prevenção & controle , Acessibilidade aos Serviços de Saúde/estatística & dados numéricos , Otolaringologia , Padrões de Prática Médica , Telemedicina , COVID-19/epidemiologia , COVID-19/transmissão , Feminino , Humanos , Masculino , Melhoria de Qualidade , Qualidade da Assistência à Saúde , Estudos Retrospectivos
9.
Am J Otolaryngol ; 41(4): 102469, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32278471

RESUMO

OBJECTIVE: Adult-onset laryngomalacia is a rare clinical entity that has been infrequently reported. This study aims to evaluate the clinical presentation, diagnosis, and management of adult-onset laryngomalacia through literature review and report of a case. METHODS: PubMed and Google Scholar databases were queried for articles published from 1960 to 2019 including only patients aged 18 years and older. Included keywords were: 'laryngomalacia', 'adult laryngomalacia', 'acquired laryngomalacia', 'idiopathic laryngomalacia', 'laryngeal obstruction', 'floppy epiglottis', 'floppy epiglottis', and 'epiglottis prolapse'. Data extracted from literature included clinical presentation, diagnostic workup, surgical management, and follow-up care. SOURCES: PubMed and Google Scholar. RESULTS: A total of 21 articles reported 41 cases of adult-onset laryngomalacia. Within these cases, 5 etiologies were identified: neurologic (n = 14), exercise-induced (n = 9), post-operative (n = 7), idiopathic (n = 7), and age-related (n = 4) laryngomalacia. Anterior prolapse of arytenoids and aryepiglottic folds was the most common laryngoscopic finding (n = 21), followed by posterior epiglottic prolapse (n = 20). Management included supraglottoplasty (n = 14), epiglottidectomy (n = 8) or epiglottopexy (n = 2). Neurologic etiology required tracheotomy more often than the other etiologies (n = 5, 36% vs. 15%). Three patients were managed expectantly without surgical intervention and reported symptom resolution. CONCLUSION: Adult laryngomalacia is a rare diagnosis comprising a spectrum of disease. This diagnosis may be overlooked, but association with neurologic injury or trauma should encourage consideration. In comparison to pediatric laryngomalacia, patients often require surgical intervention. Surgical decision is based on the direction of supraglottic collapse, where supraglottoplasty and partial epiglottidectomy are effective interventions. LEVEL OF EVIDENCE: N/A.


Assuntos
Laringomalácia/diagnóstico , Laringomalácia/cirurgia , Procedimentos Cirúrgicos Otorrinolaringológicos/métodos , Adulto , Diagnóstico Diferencial , Feminino , Humanos , Laringomalácia/etiologia , Laringomalácia/patologia , Laringoscopia
10.
Am J Otolaryngol ; 41(6): 102691, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32890807

RESUMO

BACKGROUND: Patients with COVID-19 who are intubated and require mechanical ventilation have been observed to have oropharyngeal bleeding necessitating otolaryngology intervention. METHODS: We report five cases of oropharyngeal hemorrhage in COVID-19 patients on mechanical ventilation requiring evaluation by otolaryngologists at George Washington University Hospital (GWUH) and Boston Medical Center (BMC) from March to April 2020. Institutional Review Board at both institutions exempted this study from informed consent because there were no identifiable patient characteristics, photographs, or imaging studies included. RESULTS: All five patients were managed conservatively; four required packing with Kerlix gauze by an otolaryngologist. Two patients had the additional requirement of extracorporeal membrane oxygenation (ECMO) and associated anticoagulation. Three patients improved with oropharyngeal packing; two had persistent bleeding. Three patients expired. Endotracheal tubes were repositioned less frequently due to the COVID-19 pandemic. CONCLUSIONS: Intubated patients with COVID-19 may have an increased risk of oropharyngeal hemorrhage. This may be due to anticoagulation, prolonged intubation, or decreased frequency of endotracheal tube repositioning. Otolaryngologists should wear appropriate PPE when managing this hemorrhagic complication.


Assuntos
Infecções por Coronavirus/complicações , Hemorragia/etiologia , Doenças Faríngeas/etiologia , Pneumonia Viral/complicações , Adulto , Idoso , Idoso de 80 Anos ou mais , Anticoagulantes/administração & dosagem , Anticoagulantes/efeitos adversos , Betacoronavirus , COVID-19 , Oxigenação por Membrana Extracorpórea , Feminino , Hemorragia/terapia , Humanos , Intubação Intratraqueal , Masculino , Pessoa de Meia-Idade , Pandemias , Doenças Faríngeas/terapia , Respiração Artificial , Síndrome do Desconforto Respiratório/terapia , Síndrome do Desconforto Respiratório/virologia , SARS-CoV-2 , Tampões Cirúrgicos
11.
Wound Repair Regen ; 24(2): 356-65, 2016 03.
Artigo em Inglês | MEDLINE | ID: mdl-26800421

RESUMO

Burn and blast injuries are frequently complicated by invasive infections, which lead to poor wound healing, delay in treatment, disability, or death. Traditional approach centers on early debridement, fluid resuscitation, and adjunct intravenous antibiotics. These modalities often prove inadequate in burns, where compromised local vasculature limits the tissue penetration of systemic antibiotics. Here, we demonstrate the treatment of infected burns with topical delivery of ultrahigh concentrations of antibiotics. Standardized burns were inoculated with Staphylococcus aureus or Pseudomonas aeruginosa. After debridement, burns were treated with either gentamicin (2 mg/mL) or minocycline (1 mg/mL) at concentrations greater than 1,000 times the minimum inhibitory concentration. Amount of bacteria was quantified in tissue biopsies and wound fluid following treatment. After six days of gentamicin or minocycline treatment, S. aureus counts decreased from 4.2 to 0.31 and 0.72 log CFU/g in tissue, respectively. Similarly, P. aeruginosa counts decreased from 2.5 to 0.0 and 1.5 log CFU/g in tissue, respectively. Counts of both S. aureus and P. aeruginosa remained at a baseline of 0.0 log CFU/mL in wound fluid for both treatment groups. The findings here demonstrate that super-therapeutic concentrations of antibiotics delivered topically can rapidly reduce bacterial counts in infected full-thickness porcine burns. This treatment approach may aid wound bed preparation and accelerate time to grafting.


Assuntos
Antibacterianos/administração & dosagem , Antibacterianos/farmacologia , Queimaduras/tratamento farmacológico , Queimaduras/microbiologia , Infecções por Pseudomonas/tratamento farmacológico , Infecções Estafilocócicas/tratamento farmacológico , Infecção dos Ferimentos/tratamento farmacológico , Administração Tópica , Animais , Queimaduras/patologia , Desbridamento , Modelos Animais de Doenças , Feminino , Gentamicinas/administração & dosagem , Gentamicinas/farmacologia , Minociclina/administração & dosagem , Minociclina/farmacologia , Infecções por Pseudomonas/microbiologia , Infecções por Pseudomonas/patologia , Pseudomonas aeruginosa/efeitos dos fármacos , Infecções Estafilocócicas/microbiologia , Infecções Estafilocócicas/patologia , Staphylococcus aureus/efeitos dos fármacos , Suínos , Cicatrização/efeitos dos fármacos , Infecção dos Ferimentos/microbiologia , Infecção dos Ferimentos/patologia
13.
J Reprod Med ; 61(1-2): 87-91, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-26995896

RESUMO

BACKGROUND: Colouterine fistula is one of the rarest complications of diverticulitis, with 23 cases reported in the world literature to our knowledge. Because of its infrequent presentation, there are no standardized diagnostic modalities for this disease, but almost all patients will require surgical treatment. CASE: An afebrile, 66-year-old woman with known diverticulitis presented with vaginal bleeding and discharge of 1 day's duration. Based on imaging she was believed to have a complex adnexal mass. However, it was proven intraoperatively to be a colouterine fistula. CONCLUSION: Although extremely uncommon, the diagnosis of a colouterine fistula can be made with pelvic examination, diagnostic imaging, or surgical exploration. The surgical treatment of colouterine fistulae varies on the acuity of the patient's diverticular disease and the surgeon's suspicion of malignancy.


Assuntos
Doenças dos Anexos , Fístula Intestinal , Doenças Uterinas , Idoso , Diagnóstico Diferencial , Feminino , Humanos , Hemorragia Uterina
14.
Ann Plast Surg ; 74 Suppl 1: S12-4, 2015 May.
Artigo em Inglês | MEDLINE | ID: mdl-25785383

RESUMO

Herpes simplex virus (HSV) primary infection and reactivation has been associated with the inflammation and transient decrease in immunocompetence after surgery and local trauma. In addition, HSV infection is known to impair wound healing, increase risk of scarring, and impede connective tissue graft transplantation. To our knowledge, this is the first case of HSV infection complicating cleft palate repair presented in literature. In this report, we present a case of primary HSV infection occurring in a healthy 26-month-old patient after repair of the secondary cleft palate with mucoperichondrial flaps and V-Y pushback. The patient developed high fever on postoperative day 1, which was followed by perioral vesicular lesions and multiple intraoral ulcerations involving the lips, palate, and posterior pharynx. Unknown to the surgeons, the patient was exposed to HSV before surgery by a sibling with orolabial HSV infection. The infective cause was ascertained via polymerase chain reaction for HSV-1 DNA, and the infection was treated with topical and intravenous acyclovir for 1 week. The patient recovered well with adequate flap healing, good aesthetic outcome, and no complications on 1-month follow-up. This report underscores the importance of prompt recognition of herpetic infections in the patient with craniofacial surgery and reviews the association and complications of HSV infection in surgical healing. Early identification with prompt antiviral therapy and meticulous wound care are essential to ameliorate the scarring and delayed wound healing associated with HSV infection.


Assuntos
Fissura Palatina/cirurgia , Herpes Simples , Complicações Pós-Operatórias/virologia , Estomatite/virologia , Pré-Escolar , Feminino , Herpes Simples/tratamento farmacológico , Humanos , Complicações Pós-Operatórias/tratamento farmacológico , Guias de Prática Clínica como Assunto , Estomatite/tratamento farmacológico
16.
Exp Brain Res ; 232(5): 1443-58, 2014 May.
Artigo em Inglês | MEDLINE | ID: mdl-24481663

RESUMO

Within-session habituation and extinction learning co-occur as do subsequent consolidation of habituation (i.e., between-session habituation) and extinction memory. We sought to determine whether, as we predicted: (1) between-session habituation is greater across a night of sleep versus a day awake; (2) time-of-day accounts for differences; (3) between-session habituation predicts consolidation of extinction memory; (4) sleep predicts between-session habituation and/or extinction memory. Participants (N = 28) completed 4-5 sessions alternating between mornings and evenings over 3 successive days (2 nights) with session 1 in either the morning (N = 13) or evening (N = 15). Twelve participants underwent laboratory polysomnography. During 4 sessions, participants completed a loud-tone habituation protocol, while skin conductance response (SCR), blink startle electromyography (EMG), heart-rate acceleration and heart-rate deceleration (HRD) were recorded. For sessions 1 and 2, between-session habituation of EMG, SCR and HRD was greater across sleep. SCR and HRD were generally lower in the morning. Between-session habituation of SCR for sessions 1 and 2 was positively related to intervening (first night) slow wave sleep. In the evening before night 2, participants also underwent fear conditioning and extinction learning phases of a second protocol. Extinction recall was tested the following morning. Extinction recall was predicted only by between-session habituation of SCR across the same night (second night) and by intervening REM. We conclude that: (1) sleep augments between-session habituation, as does morning testing; (2) extinction recall is predicted by concurrent between-session habituation; and (3) both phenomena may be influenced by sleep.


Assuntos
Ritmo Circadiano/fisiologia , Extinção Psicológica/fisiologia , Habituação Psicofisiológica/fisiologia , Memória/fisiologia , Sono/fisiologia , Vigília/fisiologia , Adulto , Análise de Variância , Condicionamento Psicológico , Eletromiografia , Medo/fisiologia , Resposta Galvânica da Pele , Frequência Cardíaca , Humanos , Masculino , Polissonografia , Autorrelato , Fatores de Tempo , Adulto Jovem
17.
J Craniofac Surg ; 25(6): 2160-3, 2014 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-25318442

RESUMO

Occult submucous cleft palate is a congenital deformity characterized by deficient union of the muscles that normally cross the velum and aid in elevation of the soft palate. Despite this insufficient muscle coverage, occult submucous cleft palate by definition lacks clear external anatomic landmarks. This absence of anatomic signs makes diagnosis of occult submucous cleft less obvious, more dependent on ancillary tests, and potentially missed entirely. Current diagnostic methodologies are limited and often are unrevealing in the presurgical patient; however, a missed diagnosis of occult submucous cleft palate can result in velopharyngeal insufficiency and major functional impairment in patients after surgery on the oropharynx. By accurately and easily diagnosing occult submucous cleft palate, it is possible to defer or modify pharyngeal surgical intervention that may further impair velopharyngeal function in susceptible patients. In this report, we introduce transillumination of the soft palate using a transnasal or transoral flexible endoscope as an inexpensive and simple technique for identification of submucous cleft palate. The use of transillumination of an occult submucous cleft palate is illustrated in a patient case and is compared to other current diagnostic methodologies.


Assuntos
Fissura Palatina/diagnóstico , Transiluminação/métodos , Adulto , Cinerradiografia/métodos , Fissura Palatina/diagnóstico por imagem , Feminino , Humanos , Laringoscópios , Laringoscopia/métodos , Imageamento por Ressonância Magnética/métodos , Orofaringe/cirurgia , Músculos Palatinos/anormalidades , Músculos Palatinos/diagnóstico por imagem , Palato Mole/anormalidades , Palato Mole/diagnóstico por imagem , Abscesso Peritonsilar/cirurgia , Tonsilectomia/efeitos adversos , Ultrassonografia , Insuficiência Velofaríngea/etiologia , Gravação em Vídeo/métodos
18.
Aesthetic Plast Surg ; 38(1): 100-103, 2014 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-24196012

RESUMO

UNLABELLED: Mucocele formation is a very rare complication of rhinoplasty surgery, with only 26 incidences documented in the medical literature. Postrhinoplasty nasal mucoceles are believed to result from the growth of ectopic nasal respiratory epithelium displaced during the rhinoplasty procedure. Although most cases of nasal mucocele present within weeks of rhinoplasty surgery, exceptional accounts describe nasal mucoceles presenting years after rhinoplasty. This case report describes an extremely delayed case of dorsal nasal mucocele that presented 21 years after the patient underwent a septorhinoplasty. The aesthetically bothersome mucocele was successfully removed with an open rhinoplasty approach, and the histopathologic analysis was consistent with a simple benign mucous retention cyst. The history, etiology, and prevention of mucocele formation in rhinoplasty surgery also are discussed. LEVEL OF EVIDENCE V: This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .


Assuntos
Mucocele/etiologia , Doenças Nasais/etiologia , Rinoplastia/efeitos adversos , Humanos , Masculino , Pessoa de Meia-Idade , Fatores de Tempo
19.
Laryngoscope ; 134(4): 1606-1613, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-37732696

RESUMO

OBJECTIVES: Localized laryngotracheal amyloidosis (LA) is a rare disease that can impact phonation and respiration. Treatment options include observation, surgery, and radiation therapy (RT). Given the rare incidence of LA, evidence regarding optimal management and long-term outcomes is limited. STUDY DESIGN: Retrospective cross-sectional analysis. METHODS: All patients with LA presenting to an international amyloid center from 1999 to 2022 were analyzed. Patients were categorized by treatment modality: surgery, RT, or observation. Patient and disease factors including demographics, clinical presentation, and progression with need for additional treatment were evaluated. RESULTS: Seventy-one patients (27M:44F) with LA were treated with surgery (n = 40), RT (n = 11), and observation (n = 20). Gender distribution, age at diagnosis, and systemic workup did not differ significantly between treatment cohorts. A correlation was identified between LA location and treatment modality, with higher rate of subglottic/tracheal amyloid in RT patients vs. surgery and observation patients [(90% and 52% respectively), p < 0.005]. Surgery patients had a median of two surgeries for disease management (range: 1-32) and RT patients had median five surgeries prior to RT (range: 0-17). Six patients required tracheotomy: 3/40 surgery, 3/11 RT and 0/20 in observation cohort. Surgery and RT patients had a longer duration of follow-up (mean 6.7 and 11.7 years) compared with the observation cohort (5.7 years). CONCLUSION: Laryngotracheal amyloidosis is a rare disease with variable presentation. Selective surgery of involved subsites is the primary treatment, though multiple surgeries may be needed to optimize function. Observation is appropriate for those with minimal symptoms. For recalcitrant disease, and particularly subglottic/tracheal amyloid, radiotherapy can be beneficial. LEVEL OF EVIDENCE: 4 Laryngoscope, 134:1606-1613, 2024.


Assuntos
Amiloidose , Doenças Raras , Humanos , Estudos Retrospectivos , Estudos Transversais , Resultado do Tratamento , Amiloidose/diagnóstico , Amiloidose/cirurgia
20.
Ann Otol Rhinol Laryngol ; 132(7): 800-805, 2023 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-35915914

RESUMO

OBJECTIVES: Development of traction pharyngesophageal diverticula following anterior cervical discectomy and fusion (ACDF) is a rare but morbid cause of dysphagia and the optimal surgical management is unclear. METHODS: PubMed, GoogleScholar, Embase database reviews of "traction diverticula/um + anterior cervical/ACDF." Patient demographics, presenting symptoms, surgical technique, and outcomes were compared. RESULTS: Seventeen manuscripts reported 21 cases of pharyngesophageal diverticulum (PED) following ACDF (10 F:11 M, mean age 45 years). Presenting symptoms included dysphagia (n = 18), regurgitation (n = 10), and weight loss (n = 6). The average interval to presentation was 4.5 years after ACDF (range: 6 months-18 years) and ACDF levels most commonly involved were C5-C6 and/or C6-C7 (n = 12). Open diverticulectomy with (n = 12) and without (n = 6) cricopharyngeal myotomy was the most common approach and reinforcement with vascularized tissue was used in 6 patients (29%). Attempted endoscopic diverticula repair was successful in 1 patient, was converted to open repair in 5 patients, and 1 patient did not have surgical repair. ACDF hardware was removed in 11 cases (52%) and was routinely removed when concomitant infection was present. Complications following repair were reported in 6 patients (30%). CONCLUSION: Traction pharyngesophageal diverticula are a rare cause of dysphagia which occur after a variable interval following ACDF. Open surgical diverticulectomy yields superior outcomes compared to the endoscopic approach. In the setting of infection hardware removal is recommended. Vascularized tissue reinforcement can limit potential esophageal leak; however, the risk of post-operative complications remains high.


Assuntos
Transtornos de Deglutição , Divertículo , Fusão Vertebral , Humanos , Pessoa de Meia-Idade , Transtornos de Deglutição/etiologia , Transtornos de Deglutição/cirurgia , Discotomia/efeitos adversos , Divertículo/complicações , Divertículo/cirurgia , Complicações Pós-Operatórias/etiologia , Complicações Pós-Operatórias/cirurgia , Fusão Vertebral/efeitos adversos , Vértebras Cervicais/cirurgia , Resultado do Tratamento
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