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1.
Laryngoscope ; 2024 Apr 08.
Artículo en Inglés | MEDLINE | ID: mdl-38587164

RESUMEN

OBJECTIVE: To describe types and outcomes of elective otolaryngological surgeries undergone by patients ≥90 years of age and to assess whether very old age is an independent risk factor for postsurgical complications and death. METHODS: The National Surgical Quality Improvement Program, a validated national prospective surgical outcomes database, was used to identify all patients aged 65 years and older who underwent elective otolaryngological procedures from 2011 to 2020. Study outcomes included minor complications, major life-threatening complications, and 30-day mortality. Predictors of outcomes, including frailty, were identified using univariable analyses and age was added into the final logistic regression models with stepwise selection. RESULTS: A total of 40,723 patients met inclusion criteria; 629 (1.5%) patients were ≥90 years of age. Of the 63,389 procedures, head and neck (67.6%) and facial plastics and reconstructive (15.0%) procedures were most common. The overall incidence of major life-threatening complications, minor complications, and death was 2.0%, 3.5%, and 0.4%, respectively. Age ≥90 was significantly associated with an increased risk for 30-day mortality, but not with major or minor postoperative complications. A high modified frailty index was significantly associated with an increased risk for major postoperative complications and death amongst patients ≥90 years. CONCLUSIONS: Elective otolaryngological surgery can be safe in relatively healthy nonagenarians and centenarians, though there is a small increased risk of 30-day mortality. Although older age can predispose patients to other comorbidities, age alone should not deter surgeons and patients from considering elective otolaryngological procedures. Frailty may be a better predictor for surgical outcomes. LEVEL OF EVIDENCE: Level IV Laryngoscope, 2024.

2.
Nat Commun ; 15(1): 1165, 2024 Feb 07.
Artículo en Inglés | MEDLINE | ID: mdl-38326311

RESUMEN

The t(X,17) chromosomal translocation, generating the ASPSCR1::TFE3 fusion oncoprotein, is the singular genetic driver of alveolar soft part sarcoma (ASPS) and some Xp11-rearranged renal cell carcinomas (RCCs), frustrating efforts to identify therapeutic targets for these rare cancers. Here, proteomic analysis identifies VCP/p97, an AAA+ ATPase with known segregase function, as strongly enriched in co-immunoprecipitated nuclear complexes with ASPSCR1::TFE3. We demonstrate that VCP is a likely obligate co-factor of ASPSCR1::TFE3, one of the only such fusion oncoprotein co-factors identified in cancer biology. Specifically, VCP co-distributes with ASPSCR1::TFE3 across chromatin in association with enhancers genome-wide. VCP presence, its hexameric assembly, and its enzymatic function orchestrate the oncogenic transcriptional signature of ASPSCR1::TFE3, by facilitating assembly of higher-order chromatin conformation structures demonstrated by HiChIP. Finally, ASPSCR1::TFE3 and VCP demonstrate co-dependence for cancer cell proliferation and tumorigenesis in vitro and in ASPS and RCC mouse models, underscoring VCP's potential as a novel therapeutic target.


Asunto(s)
Carcinoma de Células Renales , Neoplasias Renales , Animales , Ratones , Humanos , Proteómica , Carcinoma de Células Renales/genética , Carcinoma de Células Renales/patología , Translocación Genética , Proteínas de Fusión Oncogénica/genética , Proteínas de Fusión Oncogénica/metabolismo , Neoplasias Renales/genética , Cromatina/genética , Factores de Transcripción Básicos con Cremalleras de Leucinas y Motivos Hélice-Asa-Hélice/metabolismo , Cromosomas Humanos X/metabolismo , Péptidos y Proteínas de Señalización Intracelular/genética , Proteína que Contiene Valosina/genética
3.
bioRxiv ; 2023 Oct 02.
Artículo en Inglés | MEDLINE | ID: mdl-37873234

RESUMEN

The t(X,17) chromosomal translocation, generating the ASPSCR1-TFE3 fusion oncoprotein, is the singular genetic driver of alveolar soft part sarcoma (ASPS) and some Xp11-rearranged renal cell carcinomas (RCC), frustrating efforts to identify therapeutic targets for these rare cancers. Proteomic analysis showed that VCP/p97, an AAA+ ATPase with known segregase function, was strongly enriched in co-immunoprecipitated nuclear complexes with ASPSCR1-TFE3. We demonstrate that VCP is a likely obligate co-factor of ASPSCR1-TFE3, one of the only such fusion oncoprotein co-factors identified in cancer biology. Specifically, VCP co-distributed with ASPSCR1-TFE3 across chromatin in association with enhancers genome-wide. VCP presence, its hexameric assembly, and its enzymatic function orchestrated the oncogenic transcriptional signature of ASPSCR1-TFE3, by facilitating assembly of higher-order chromatin conformation structures as demonstrated by HiChIP. Finally, ASPSCR1-TFE3 and VCP demonstrated co-dependence for cancer cell proliferation and tumorigenesis in vitro and in ASPS and RCC mouse models, underscoring VCP's potential as a novel therapeutic target.

4.
Facial Plast Surg ; 39(3): 317-322, 2023 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-36878678

RESUMEN

Among zygomaticomaxillary complex (ZMC) fractures presenting to a tertiary urban academic center, the authors hypothesized the presence of both clinical and radiographic predictors of operative management. The investigators conducted a retrospective cohort study of 1,914 patients with facial fractures managed at an academic medical center in New York City between 2008 and 2017. The predictor variables were based on both clinical data and features of pertinent imaging studies, and the outcome variable was an operative intervention. Descriptive and bivariate statistics were computed and the p-value was set at 0.05. In total, 196 patients sustained ZMC fractures (5.0%) and 121 (61.7%) ZMC fractures were treated surgically. All patients who presented with globe injury, blindness, retrobulbar injury, restricted gaze, or enophthalmos and a concurrent ZMC fracture were managed surgically. The most common surgical approach was the gingivobuccal corridor (31.9% of all approaches), and there were no significant immediate postoperative complications. Younger patients (38.9 ± 18 years vs. 56.1 ± 23.5 years, p < 0.0001) and patients with greater than or equal to 4 mm of orbital floor displacement were more likely to receive surgical treatment than observation (82 vs. 56%, p = 0.045), as were patients with comminuted orbital floor fractures (52 vs. 26%, p = 0.011). In this cohort, patients more likely to undergo surgical reduction were young patients with ophthalmologic symptoms on presentation and at least 4 mm displacement of the orbital floor. Low kinetic energy ZMC fractures may warrant surgical management as often as high-energy ZMC fractures. While orbital floor comminution has been shown to be a predictor for operative reduction, in this study we also demonstrated a difference in the rate of reduction based on the severity of orbital floor displacement. This may have significant implications in both the triage and selection of patients most suitable for operative repair.


Asunto(s)
Fracturas Conminutas , Fracturas Maxilares , Fracturas Orbitales , Fracturas Craneales , Fracturas Cigomáticas , Humanos , Estudios Retrospectivos , Fracturas Cigomáticas/cirugía , Fracturas Maxilares/cirugía , Fracturas Orbitales/complicaciones , Fracturas Conminutas/complicaciones
5.
Bio Protoc ; 13(2)2023 Jan 20.
Artículo en Inglés | MEDLINE | ID: mdl-36789166

RESUMEN

Single-particle electron cryo-microscopy (cryo-EM) is an effective tool to determine high-resolution structures of macromolecular complexes. Its lower requirements for sample concentration and purity make it an accessible method to determine structures of low-abundant protein complexes, such as those isolated from native sources. While there are many approaches to protein purification for cryo-EM, attaining suitable particle quality and abundance is generally the major bottleneck to the typical single-particle project workflow. Here, we present a protocol using budding yeast ( S. cerevisiae ), in which a tractable immunoprecipitation tag (3xFLAG) is appended at the endogenous locus of a gene of interest (GOI). The modified gene is expressed under its endogenous promoter, and cells are grown and harvested using standard procedures. Our protocol describes the steps in which the tagged proteins and their associated complexes are isolated within three hours of thawing cell lysates, after which the recovered proteins are used directly for cryo-EM specimen preparation. The prioritization of speed maximizes the ability to recover intact, scarce complexes. The protocol is generalizable to soluble yeast proteins that tolerate C-terminal epitope tags. Graphical abstract Overview of lysate-to-grid workflow. Yeast cells are transformed to express a tractable tag on a gene of interest. Following cell culture and lysis, particles of interest are rapidly isolated by co-immunoprecipitation and prepared for cryo-EM imaging (created with BioRender.com).

6.
Laryngoscope ; 133(4): 755-763, 2023 04.
Artículo en Inglés | MEDLINE | ID: mdl-35394648

RESUMEN

OBJECTIVE: Demographic minorities are underrepresented in clinical trials. For the approval of new drug applications (NDAs), the Food and Drug Administration (FDA) has asserted that clinical trial enrollment should represent the demographics of patients likely to receive the trial drug. The aim of this study is to assess the demographics of clinical trials included in NDAs and biologics license applications (BLAs) approved by the FDA since 1990 for allergic rhinitis (AR), a condition whose demographic prevalence mirrors the US population. METHODS: Federal Freedom of Information Act requests were submitted to the US government to obtain documents related to all relevant NDAs and BLAs. The Drugs@FDA database was queried for all clinical trial documentation. Demographic data were extracted from clinical trials used to inform FDA approval for AR pharmacotherapies. Demographics were analyzed relative to national US Census data. RESULTS: Since 1990, 22 drugs have been approved for AR. The racial, ethnic, and sex composition of all included study populations differed significantly (p < 0.05) from the demographics of AR and from US Census data. Most NDAs and BLAs included overrepresentation of White participants and underrepresentation of Black, Asian, Pacific Island, Native American, and Hispanic participants. CONCLUSION: The patients enrolled in clinical trials used to inform FDA approval for AR pharmacotherapeutics do not represent the demographics of the United States or the demographics of AR. The clinical significance of unrepresentative demography between study and treatment populations has been examined for several medical disorders, but has not been studied for AR. LEVEL OF EVIDENCE: 4 Laryngoscope, 133:755-763, 2023.


Asunto(s)
Aprobación de Drogas , Grupos Minoritarios , Humanos , Estados Unidos , Preparaciones Farmacéuticas , Selección de Paciente , United States Food and Drug Administration , Demografía
7.
Laryngoscope ; 133(1): 43-50, 2023 01.
Artículo en Inglés | MEDLINE | ID: mdl-35147223

RESUMEN

OBJECTIVE: The United States Patient Protection and Affordable Care Act allocated funds for states to expand Medicaid coverage. However, several states declined expansion. We aim to determine whether Medicaid expansion is associated with healthcare coverage, cancer stage at diagnosis, treatment, and survival among patients with rhinologic cancer. Rhinologic cancer was defined to include cancer of the nasal cavity, paranasal sinus, nasopharynx, or olfactory nerve. STUDY DESIGN: Cohort study. METHODS: Patients diagnosed with primary rhinologic malignancies between 2007 to 2016 were extracted from the National Cancer Institute Surveillance, Epidemiology, End Results (SEER) registry. Patients were grouped by diagnosis before and after 2014 (when Medicaid expansion became effective) and whether their state had expanded Medicaid. Multivariable logistic regression controlling for age, sex, race, ethnicity, and income/education was utilized to examine associations between Medicaid expansion/insurance status and stage at diagnosis, treatment, and survival. Overall and disease-specific survival were examined using Kaplan-Meier analysis. RESULTS: Analysis included 10,164 patients. The proportion of uninsured patients decreased after 2014 (2.4%) compared to before 2014 (4.8%, P < .001). After 2014, patients in nonexpanded states were more likely to be diagnosed with advanced stage disease compared to patients in expanded states (N = 2,364; OR = 1.27, 95% CI 1.01-1.60). Being uninsured in any state was associated with advanced stage disease at diagnosis (OR = 1.75, 95% CI 1.41-2.22) and increased risk of disease-specific death (HR = 1.54, 95% CI 1.32-1.82). Survival measures were not associated with diagnosis before versus after 2014 or Medicaid expansion. CONCLUSIONS: Patients lacking insurance or residing in nonexpanded states may be more likely to present with advanced stage rhinologic cancer. Longitudinal studies should validate these findings. LEVEL OF EVIDENCE: 3 Laryngoscope, 133:43-50, 2023.


Asunto(s)
Neoplasias , Patient Protection and Affordable Care Act , Estados Unidos/epidemiología , Humanos , Estudios de Cohortes , Medicaid , Cobertura del Seguro
8.
Neuropharmacology ; 195: 108688, 2021 09 01.
Artículo en Inglés | MEDLINE | ID: mdl-34174263

RESUMEN

Behaviour of a mammal relies on the brain's excitatory circuits equipped with glutamatergic synapses. In most cases, glutamate escaping from the synaptic cleft is rapidly buffered and taken up by high-affinity transporters expressed by nearby perisynaptic astroglial processes (PAPs). The spatial relationship between glutamatergic synapses and PAPs thus plays a crucial role in understanding glutamate signalling actions, yet its intricate features can only be fully appreciated using methods that operate beyond the diffraction limit of light. Here, we examine principal aspects pertaining to the receptor actions of glutamate, inside and outside the synaptic cleft in the brain, where the organisation of synaptic micro-physiology and micro-environment play a critical part. In what conditions and how far glutamate can escape the synaptic cleft activating its target receptors outside the immediate synapse has long been the subject of debate. Evidence is also emerging that neuronal activity- and astroglia-dependent glutamate spillover actions could be important across the spectrum of cognitive functions This article is part of the special issue on 'Glutamate Receptors - The Glutamatergic Synapse'.


Asunto(s)
Espinas Dendríticas/metabolismo , Ácido Glutámico/metabolismo , Neuronas/metabolismo , Receptores de Glutamato/metabolismo , Sinapsis/metabolismo , Animales , Astrocitos/metabolismo , Humanos
9.
Facial Plast Surg ; 37(5): 564-570, 2021 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-33621987

RESUMEN

This study aimed to define better the clinical presentation, fracture patterns, and features predictive of associated injuries and need for surgery in pediatric facial trauma patients in an urban setting. Charts of patients 18 years or younger with International Classification of Disease 9th and 10th revision (ICD-9/ICD-10) codes specific for facial fractures (excluding isolated nasal fractures) at NY-Presbyterian/Weill Cornell Medical Center between 2008 and 2017 were retrospectively reviewed. Of 204 patients, most were referred to the emergency department by a physician's office or self-presented. Children (age 0-6 years) were most likely to have been injured by falls, while more patients 7 to 12 years and 13 to 18 years were injured during sporting activities (p < 0.0001). Roughly half (50.5%) of the patients had a single fracture, and the likelihood of surgery increased with greater numbers of fractures. Older patients with either orbital or mandibular fractures were more likely to undergo surgery than younger ones (p = 0.0048 and p = 0.0053, respectively). Cranial bone fractures, CSF leaks, and intracranial injuries were more common in younger patients (p < 0.0001) than older patients and were more likely after high energy injuries; however, 16.2% of patients sustaining low energy injuries also sustained cranial bone, CSF leak, or intracranial injury. In an urban environment, significant pediatric facial fractures and associated injuries may occur after nonclassic low kinetic energy traumatic events. The age of the patient impacts both the injuries sustained and the treatment rendered. It is essential to maintain a high index of suspicion for associated injuries in all pediatric facial trauma patients.


Asunto(s)
Traumatismos Faciales , Fracturas Craneales , Accidentes por Caídas , Niño , Preescolar , Huesos Faciales , Traumatismos Faciales/epidemiología , Humanos , Lactante , Recién Nacido , Estudios Retrospectivos , Fracturas Craneales/epidemiología , Fracturas Craneales/cirugía
10.
Am J Otolaryngol ; 42(4): 102960, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-33610921

RESUMEN

PURPOSE: Telemedicine use in otolaryngology waxed and waned during the COVID-19 pandemic outbreak in the U.S. Assessing the patterns of telemedicine use and its perceived limitations during the COVID-19 outbreak in 2020 allows identification and correction of impediments to consistent telemedicine use by otolaryngologists. MATERIALS AND METHODS: Full-time faculty of 2 academic otolaryngology departments in New York City were surveyed regarding their telemedicine use from March through August 2020 during the "first wave" of the COVID-19 pandemic. Based on these findings, a method of "augmented outpatient otolaryngology teleconsultation" designed to enhance the quality of the physical examination was developed and employed from August to December 2020. Patients receiving this augmented teleconsult were anonymously surveyed about their telemedical experience. RESULTS: Telemedicine use by faculty was minimal prior to the pandemic, but as total outpatient volume decreased 65-84% across subspecialties, it was used by all otolaryngologists during COVID-19. Physicians were less confident in making a telemedical diagnosis at all phases of the study in all subspecialties. Patients who had an augmented otolaryngology teleconsultation were satisfied with it, believed it facilitated earlier care, limited the time and cost of travel to the physician's office and felt their physician was able to perform a sufficient physical examination. CONCLUSIONS: During the COVID-19 crisis, physicians utilized teleotolaryngology to provide care but were less satisfied with their ability to make an accurate diagnosis. Inexpensive direct-to-consumer digital otoscopes can improve the quality of the physical examination provided and can address both patient and physician needs.


Asunto(s)
Atención Ambulatoria/organización & administración , COVID-19/prevención & control , Control de Enfermedades Transmisibles , Otolaringología/organización & administración , Consulta Remota/organización & administración , Adolescente , Adulto , Anciano , COVID-19/epidemiología , COVID-19/transmisión , Femenino , Humanos , Masculino , Persona de Mediana Edad , Satisfacción del Paciente , Examen Físico , Pautas de la Práctica en Medicina , Adulto Joven
11.
Elife ; 102021 02 16.
Artículo en Inglés | MEDLINE | ID: mdl-33591274

RESUMEN

Chromosome segregation during cell division requires engagement of kinetochores of sister chromatids with microtubules emanating from opposite poles. As the corresponding microtubules shorten, these 'bioriented' sister kinetochores experience tension-dependent stabilization of microtubule attachments. The yeast XMAP215 family member and microtubule polymerase, Stu2, associates with kinetochores and contributes to tension-dependent stabilization in vitro. We show here that a C-terminal segment of Stu2 binds the four-way junction of the Ndc80 complex (Ndc80c) and that residues conserved both in yeast Stu2 orthologs and in their metazoan counterparts make specific contacts with Ndc80 and Spc24. Mutations that perturb this interaction prevent association of Stu2 with kinetochores, impair cell viability, produce biorientation defects, and delay cell cycle progression. Ectopic tethering of the mutant Stu2 species to the Ndc80c junction restores wild-type function in vivo. These findings show that the role of Stu2 in tension-sensing depends on its association with kinetochores by binding with Ndc80c.


Asunto(s)
Cinetocoros/metabolismo , Proteínas Asociadas a Microtúbulos/metabolismo , Proteínas Nucleares/metabolismo , Proteínas de Saccharomyces cerevisiae/metabolismo , Segregación Cromosómica , Proteínas Asociadas a Microtúbulos/genética , Mutación , Proteínas Nucleares/genética , Saccharomyces cerevisiae/genética , Saccharomyces cerevisiae/metabolismo , Proteínas de Saccharomyces cerevisiae/genética
12.
Laryngoscope ; 131(7): E2176-E2180, 2021 07.
Artículo en Inglés | MEDLINE | ID: mdl-33433012

RESUMEN

OBJECTIVE/HYPOTHESIS: To report characteristics and management of facial fractures in a major metropolitan center within the United States. STUDY DESIGN: Retrospective chart review. METHODS: Retrospective review at a level 1 trauma academic medical center of 3,946 facial fractures in 1,914 patients who presented from 2008 to 2017. Demographics, injury mechanism, associated injuries, and treatment information were collected. Logistic regression analyses were performed to determine factors associated with management. RESULTS: There were 1,280 males and 630 females with a median age of 42 years. Orbital fractures were the most common (41.4%) followed by maxilla fractures (21.9%). The most common mechanism was fall (43.6%). Surgical management was recommended for 38% of patients. The odds of surgical management were less for females (OR 0.59, 95% CI 0.48-0.73). Patients over 70 years were significantly less likely to undergo surgery compared to other age groups (OR 0.15-0.36, P < .001). The odds of surgical management were 1.69 times greater for patients with more than three fractures than for a single fracture (95% CI 1.18-2.42) and 2.23 times greater for traffic injuries compared to injuries from activities of daily living (95% CI 1.42-3.5). CONCLUSIONS: This represents one of the largest comprehensive databases of facial fractures. Our patients were most frequently injured during activities of daily living, most commonly from falls. The majority of patients were managed conservatively. Gender, age, fracture number, and mechanism of injury were independently associated with the decision to treat surgically. Our data are in stark contrast to that from other populations in which assault or motor vehicle accidents predominate. LEVEL OF EVIDENCE: 4 Laryngoscope, 131:E2176-E2180, 2021.


Asunto(s)
Huesos Faciales/lesiones , Traumatismos Faciales/epidemiología , Pautas de la Práctica en Medicina/estadística & datos numéricos , Fracturas Craneales/epidemiología , Centros Traumatológicos/estadística & datos numéricos , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Niño , Preescolar , Tratamiento Conservador/estadística & datos numéricos , Bases de Datos Factuales , Traumatismos Faciales/terapia , Femenino , Fijación de Fractura/estadística & datos numéricos , Humanos , Lactante , Masculino , Persona de Mediana Edad , Fracturas Orbitales/epidemiología , Fracturas Orbitales/terapia , Estudios Retrospectivos , Fracturas Craneales/terapia , Estados Unidos , Adulto Joven
13.
J Neurosci ; 41(11): 2329-2343, 2021 03 17.
Artículo en Inglés | MEDLINE | ID: mdl-33472821

RESUMEN

Cognitive processes that require spatial information rely on synaptic plasticity in the dorsal CA1 area (dCA1) of the hippocampus. Since the function of the hippocampus is impaired in aged individuals, it remains unknown how aged animals make spatial choices. Here, we used IntelliCage to study behavioral processes that support spatial choices of aged female mice living in a group. As a proxy of training-induced synaptic plasticity, we analyzed the morphology of dendritic spines and the expression of a synaptic scaffold protein, PSD-95. We observed that spatial choice training in young adult mice induced correlated shrinkage of dendritic spines and downregulation of PSD-95 in dCA1. Moreover, long-term depletion of PSD-95 by shRNA in dCA1 limited correct choices to a reward corner, while reward preference was intact. In contrast, old mice used behavioral strategies characterized by an increased tendency for perseverative visits and social interactions. This strategy resulted in a robust preference for the reward corner during the spatial choice task. Moreover, training decreased the correlation between PSD-95 expression and the size of dendritic spines. Furthermore, PSD-95 depletion did not impair place choice or reward preference in old mice. Thus, our data indicate that while young mice require PSD-95-dependent synaptic plasticity in dCA1 to make correct spatial choices, old animals observe cage mates and stick to a preferred corner to seek the reward. This strategy is resistant to the depletion of PSD-95 in the CA1 area. Overall, our study demonstrates that aged mice combine alternative behavioral and molecular strategies to approach and consume rewards in a complex environment.SIGNIFICANCE STATEMENT It remains poorly understood how aging affects behavioral and molecular processes that support cognitive functions. It is, however, essential to understand these processes to develop therapeutic interventions that support successful cognitive aging. Our data indicate that while young mice require PSD-95-dependent synaptic plasticity in dCA1 to make correct spatial choices (i.e., choices that require spatial information), old animals observe cage mates and stick to a preferred corner to seek the reward. This strategy is resistant to the depletion of PSD-95 in the CA1 area. Overall, our study demonstrates that aged mice combine alternative behavioral and molecular strategies to approach and consume rewards in a complex environment. Second, the contribution of PSD-95-dependent synaptic functions in spatial choice changes with age.


Asunto(s)
Región CA1 Hipocampal/fisiología , Conducta de Elección/fisiología , Homólogo 4 de la Proteína Discs Large/fisiología , Percepción Espacial/fisiología , Envejecimiento/fisiología , Envejecimiento/psicología , Animales , Espinas Dendríticas/fisiología , Homólogo 4 de la Proteína Discs Large/genética , Ambiente , Femenino , Regulación de la Expresión Génica/genética , Ratones , Ratones Endogámicos C57BL , Plasticidad Neuronal/fisiología , Recompensa , Interacción Social
14.
Ear Nose Throat J ; 100(6): 425-429, 2021 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-31558059

RESUMEN

PURPOSE: To evaluate the improvement in epiphora and need for surgical revision in patients with acquired nasolacrimal duct obstruction following balloon-assisted, middle meatal endoscopic dacryocystorhinostomy with chitosan-based dressing versus bioresorbable polyurethane packing versus no packing. PATIENTS AND METHODS: This was a retrospective study of consecutive adult patients seen from 2015 to 2018 with follow-up evaluation of epiphora at least 3 months after balloon-assisted, middle meatal endoscopic dacryocystorhinostomy. Patients with a history of prior punctoplasty, septoplasty, sinus surgery, or dacryocystorhinostomy of any kind were excluded. Those meeting criteria were stratified by postoperative hemostatic intervention: no packing, bioresorbable packing, and chitosan-based dressing (groups 1, 2, and 3, respectively). Procedural outcomes were graded as successes or failures based on subjective report and anatomical findings at most recent visit within an 18-month postoperative window. Instances of recommendation for revision surgery were also recorded. RESULTS: Forty-three cases (36 patients) met the abovementioned criteria. Groups 1, 2, and 3 comprised 12, 17, and 14 cases each, respectively. Average patient age was 55.3 years old, and average duration of follow-up was 6.7 months. Significant variation in outcomes was detected across the 3 groups (P = .0495), particularly between groups 1 and 3 (P = .033). Use of chitosan-based dressing trended toward reduced rates of recommendation for surgical revision (P = .203, P = .113). CONCLUSIONS: Use of chitosan-based dressing after endoscopic dacryocystorhinostomy was associated with improved subjective and anatomical outcomes. It may also contribute to less frequent need for revision surgery. Further study in a larger prospective trial is recommended.


Asunto(s)
Apósitos Biológicos , Quitosano/uso terapéutico , Dacriocistorrinostomía/instrumentación , Enfermedades del Aparato Lagrimal/cirugía , Obstrucción del Conducto Lagrimal , Hemorragia Posoperatoria/prevención & control , Implantes Absorbibles , Dacriocistorrinostomía/métodos , Dilatación , Femenino , Humanos , Masculino , Persona de Mediana Edad , Conducto Nasolagrimal/cirugía , Poliuretanos , Reoperación/estadística & datos numéricos , Resultado del Tratamiento
16.
Otolaryngol Head Neck Surg ; 164(3): 528-541, 2021 03.
Artículo en Inglés | MEDLINE | ID: mdl-32867585

RESUMEN

OBJECTIVE: The COVID-19 health crisis abruptly disrupted the practice of otolaryngology. This article aims to define the changes needed to operate an academic otolaryngology practice safely and efficiently from within the epicenter of the pandemic. We define the areas of normal patient workflow that have been affected by COVID-19, and we offer mitigation strategies with attention paid to the specific needs of subspecialties. DATA SOURCES: The article includes data specific to the office practice metrics of the Weill Cornell Medicine Department of Otolaryngology-Head and Neck Surgery, as well as publically available data from New York Presbyterian Hospital system and the New York Times. REVIEW METHODS: Expert opinion. CONCLUSIONS: Through careful planning and execution, it is possible to reestablish safe otolaryngologic patient care during the COVID-19 pandemic. It will require a significant change from prior practice models for successful implementation. Additionally, telemedicine can be positively integrated into the treatment of otolaryngology diseases for new and established patients. IMPLICATIONS FOR PRACTICE: The information conveyed in this review can be used as a guide by large and small otolaryngology groups to identify aspects of the patient visit that are "at risk" due to COVID-19, and it suggests sensible responses that can be made without a significant disruption to normal practice. The methods used to identify vulnerabilities with the patient visit process can be applied to future unforeseen crises, such as a resurgence of COVID-19 or a novel pandemic.


Asunto(s)
COVID-19/prevención & control , Otolaringología , Enfermedades Otorrinolaringológicas/terapia , Consultorios Médicos/organización & administración , Reinserción al Trabajo , COVID-19/transmisión , Humanos , New York
19.
Neuron ; 108(5): 919-936.e11, 2020 12 09.
Artículo en Inglés | MEDLINE | ID: mdl-32976770

RESUMEN

Extrasynaptic actions of glutamate are limited by high-affinity transporters expressed by perisynaptic astroglial processes (PAPs): this helps maintain point-to-point transmission in excitatory circuits. Memory formation in the brain is associated with synaptic remodeling, but how this affects PAPs and therefore extrasynaptic glutamate actions is poorly understood. Here, we used advanced imaging methods, in situ and in vivo, to find that a classical synaptic memory mechanism, long-term potentiation (LTP), triggers withdrawal of PAPs from potentiated synapses. Optical glutamate sensors combined with patch-clamp and 3D molecular localization reveal that LTP induction thus prompts spatial retreat of astroglial glutamate transporters, boosting glutamate spillover and NMDA-receptor-mediated inter-synaptic cross-talk. The LTP-triggered PAP withdrawal involves NKCC1 transporters and the actin-controlling protein cofilin but does not depend on major Ca2+-dependent cascades in astrocytes. We have therefore uncovered a mechanism by which a memory trace at one synapse could alter signal handling by multiple neighboring connections.


Asunto(s)
Astrocitos/metabolismo , Ácido Glutámico/metabolismo , Potenciación a Largo Plazo/fisiología , Sinapsis/metabolismo , Animales , Astrocitos/ultraestructura , Femenino , Imagenología Tridimensional/métodos , Masculino , Ratones , Ratones Endogámicos C57BL , Ratones Noqueados , Ratones Transgénicos , Técnicas de Cultivo de Órganos , Ratas , Ratas Sprague-Dawley , Ratas Wistar , Sinapsis/ultraestructura
20.
Otolaryngol Head Neck Surg ; 163(6): 1178-1185, 2020 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-32660341

RESUMEN

OBJECTIVE: To quantify pain and opioid use after otorhinolaryngologic surgery. To determine the effect of patient and surgical factors on primary outcomes. STUDY DESIGN: Prospective cohort. SETTING: Tertiary academic hospital. SUBJECTS AND METHODS: Patients undergoing elective otorhinolaryngologic surgery were prospectively enrolled. Patients completed demographic surveys and psychometric questionnaires assessing attitudes toward pain and baseline anxiety and depression before surgery. After surgery, patients documented peak pain levels (0-100 mm, visual analog scale) and daily prescription and nonprescription analgesic requirements over a 2-week period. Average daily and cumulative pain and opioid use were calculated and compared among patient cohorts stratified by procedure and preoperative factors. RESULTS: A total of 134 patients were enrolled. Total tonsillectomy was associated with significantly higher pain scores and opioid consumption, as compared to all other procedures. There was moderate correlation between average cumulative pain and opioid use. Older patients required significantly fewer doses of opioids. There was no effect of sex, marital status, or education level on postoperative pain or opioid use. Psychometric instrument scores and chronic pain or analgesic use were not associated with significant differences in pain or opioid requirements. Most patients were prescribed substantially more opioids than they actually required. CONCLUSION: Postoperative pain following elective otorhinolaryngologic surgery decreases dramatically within the first week and requires only few days of opioid analgesia, with the exception of tonsillectomy. Almost all patients required fewer than 15 doses of opioids.


Asunto(s)
Analgésicos Opioides/uso terapéutico , Procedimientos Quirúrgicos Otorrinolaringológicos , Manejo del Dolor/métodos , Dolor Postoperatorio/tratamiento farmacológico , Femenino , Humanos , Masculino , Persona de Mediana Edad , Dimensión del Dolor , Estudios Prospectivos , Psicometría , Encuestas y Cuestionarios
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