RESUMEN
Sudden sensorineural hearing loss (SSNHL) has emerged as a potential complication of COVID-19 infection and vaccination. Various mechanisms by which the SARS-CoV-2 virus can cause hearing loss have been reported, including direct viral invasion, neuroinflammation, blood flow disturbances, and immune-mediated response. However, the temporal relationship between COVID-19 infection and SSNHL remains unclear, with mixed findings and conflicting results reported in different studies. Similarly, while anecdotal reports have linked COVID-19 vaccination to SSNHL, evidence remains scarce. Establishing a correlation between COVID-19 vaccines and SSNHL implies a complex and multifactorial pathogenesis involving interactions between the immune system and the body's stress response. Nevertheless, it is important to consider the overwhelming evidence of the vaccines' safety and efficacy in limiting the spread of the disease and remains the primordial tool in reducing death.
Asunto(s)
Vacunas contra la COVID-19 , COVID-19 , Pérdida Auditiva Súbita , SARS-CoV-2 , Humanos , COVID-19/inmunología , COVID-19/prevención & control , COVID-19/complicaciones , Pérdida Auditiva Súbita/etiología , Pérdida Auditiva Súbita/inmunología , Pérdida Auditiva Súbita/virología , Vacunas contra la COVID-19/efectos adversos , Vacunas contra la COVID-19/inmunología , SARS-CoV-2/inmunología , Vacunación/efectos adversos , Oído Interno/inmunología , Pérdida Auditiva Sensorineural/virología , Pérdida Auditiva Sensorineural/inmunología , Pérdida Auditiva Sensorineural/etiologíaRESUMEN
PURPOSE OF REVIEW: The purpose of this review is to summarize the very recent literature surrounding hearing outcomes of children with congenital cytomegalovirus (cCMV) detected through systematic screening programs. RECENT FINDINGS: There are several different approaches to cCMV screening including forms of targeted vs. universal screening of newborns as well as maternally-derived prenatal testing. However, many studies fail to document hearing-related outcomes both in the newborn period and further into childhood when late-onset sensorineural hearing loss (SNHL) can occur. This systematic review included studies of neonates screened for cCMV reporting hearing outcomes for at least one point in time. Hearing targeted screening appeared the most widely reported for detection of unilateral and bilateral SNHL in those with cCMV. A few studies examined these clinical findings in relation to antiviral treatment. SUMMARY: Congenital CMV is an important and common cause of childhood hearing loss. Newborn screening programs may expand opportunities for early diagnosis and treatment of the infection and its sequelae.
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Infecciones por Citomegalovirus , Pérdida Auditiva Sensorineural , Tamizaje Neonatal , Humanos , Infecciones por Citomegalovirus/congénito , Infecciones por Citomegalovirus/diagnóstico , Infecciones por Citomegalovirus/complicaciones , Recién Nacido , Pérdida Auditiva Sensorineural/virología , Pérdida Auditiva Sensorineural/diagnóstico , Pérdida Auditiva Sensorineural/congénito , Pruebas AuditivasRESUMEN
INTRODUCTION: This prospective cohort study aims to investigate the hearing dynamics and the changes in the central auditory pathways in infants with congenital cytomegalovirus (cCMV) infection. MATERIALS AND METHODS: cCMV-infected neonates aged ≤3 weeks old were recruited and underwent clinical and laboratory tests to detect viremia and symptomatic infection, hearing examinations at three and six months of age, and radiological imaging of brain auditory pathways using diffusion tensor imaging. RESULTS: From 26 eligible infants (52 ears), we detected symptomatic infection in nine (34.6%), viremia in 14 (14/25; 56.0%) and sensorineural hearing loss (SNHL) in 14 infants (53.8%). We observed 40 ears (76.9%) with unstable hearing thresholds, 17 (42.5%) of which fluctuated. Hearing fluctuation and progressivity were more common in symptomatic infection (66.7% vs. 14.7%, p<0.001; and 38.9% vs. 2.9%, p=0.002; respectively). A substantial proportion of ears had reduced fractional anisotropy (FA) in the medial geniculate body (59.1%), superior olivary nucleus (45.5%), trapezoid body (40.9%), auditory radiation (36.4%) and inferior colliculus (31.8%). Symptomatic infection was associated with an increased FA in the medial geniculate body (mean difference, MD: 0.12; 95% Confidence Intervals, 95%CI: 0.03, 0.22) and viremia in the inferior colliculus (MD: 0.09; 95%CI: 0.02, 0.16). An FA in the inferior colliculus of ≥0.404 had a sensitivity and specificity of 68.8% and 83.3% in predicting viremia (area under the curve 0.823; 95%CI: 0.633, 1.000, p=0.022). CONCLUSION: SNHL along with its fluctuation and progression are common in cCMV-infected infants. cCMV infection may induce structural changes in the central auditory pathway.
Asunto(s)
Vías Auditivas , Infecciones por Citomegalovirus , Humanos , Infecciones por Citomegalovirus/congénito , Infecciones por Citomegalovirus/diagnóstico por imagen , Infecciones por Citomegalovirus/complicaciones , Infecciones por Citomegalovirus/fisiopatología , Estudios Prospectivos , Femenino , Masculino , Recién Nacido , Vías Auditivas/diagnóstico por imagen , Vías Auditivas/fisiopatología , Pérdida Auditiva Sensorineural/etiología , Pérdida Auditiva Sensorineural/virología , Pérdida Auditiva Sensorineural/fisiopatología , Pérdida Auditiva Sensorineural/diagnóstico por imagen , Lactante , Pruebas AuditivasRESUMEN
COVID-19 is an acute respiratory coronavirus infection in 2019 caused by the SARS-CoV-2 virus. Currently, the number of neurological complications in the acute or delayed period of coronavirus disease is increasing, including peripheral disorders of the auditory analyzer. OBJECTIVE: To present clinical cases of sensorineural hearing loss in children under 5 years of age after a novel coronavirus infection. MATERIAL AND METHODS: We report 3 cases of unilateral and 1 case of bilateral acquired deep sensorineural hearing loss, while the association with SARS-CoV-2 has been confirmed anamnetically and/or laboratory. RESULTS: The SARS-CoV-2 virus can have a depressing effect on the cochlea on its own or enhance the toxic effect of viruses during the recovery period after COVID-19. The true frequency of acute sensorineural hearing loss of infectious origin in childhood and, as its outcome, the formation of persistent hearing impairment has not been determined. CONCLUSION: Viruses are volatile, contagious, and clinically dangerous due to their complications. Vaccination is the most effective measure for the prevention of infectious diseases.
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COVID-19 , Pérdida Auditiva Sensorineural , Humanos , COVID-19/complicaciones , Pérdida Auditiva Sensorineural/etiología , Pérdida Auditiva Sensorineural/diagnóstico , Pérdida Auditiva Sensorineural/virología , Preescolar , Masculino , Femenino , SARS-CoV-2 , LactanteRESUMEN
Congenital cytomegalovirus (cCMV) is among the most common congenital infections globally. Of 85%-90% cCMV-infected infants without symptoms at birth, 10%-15% develop sequelae, most commonly sensorineural hearing loss (SNHL); their childhood neurodevelopmental outcomes are less well understood. Embase and MEDLINE were searched for publications from 16th September 2016 to 9th February 2024 to identify studies reporting primary data on neurodevelopmental outcomes in children with asymptomatic cCMV (AcCMV), measured using assessment tools or as evaluated by the study investigators, clinicians, educators, or parents. The Newcastle-Ottawa scale was applied to studies to assess risk of bias. Of 28 studies from 18 mostly high-income countries, there were 5-109 children with AcCMV per study and 6/28 had a mean or median age at last follow-up of ≥5 years. Children with AcCMV had better neurodevelopmental outcomes than children with symptomatic cCMV in 16/19 studies. Of 9/28 studies comparing AcCMV with CMV-uninfected children, six reported similar outcomes whilst three reported differences limited to measures of full-scale intelligence and receptive vocabulary among children with AcCMV and SNHL, or more generally in motor impairment. Common limitations of studies for our question were a lack of cCMV-uninfected controls, heterogeneous definitions of AcCMV, lack of focus on neurodevelopment, selection bias and inadequate follow-up. There was little evidence of children with AcCMV having worse neurodevelopmental outcomes than CMV-uninfected children, but this conclusion is limited by study characteristics and quality; findings highlight the need for well-designed and standardised approaches to investigate long-term sequelae.
Asunto(s)
Infecciones Asintomáticas , Infecciones por Citomegalovirus , Humanos , Infecciones por Citomegalovirus/congénito , Infecciones por Citomegalovirus/virología , Infecciones por Citomegalovirus/complicaciones , Infecciones por Citomegalovirus/diagnóstico , Infecciones Asintomáticas/epidemiología , Recién Nacido , Trastornos del Neurodesarrollo/virología , Niño , Lactante , Preescolar , Pérdida Auditiva Sensorineural/virología , CitomegalovirusRESUMEN
Background/aim: Cytomegalovirus (CMV) is the most common congenital viral infection. Although most children with congenital CMV (approximately 85%-90%) are asymptomatic at birth, findings such as sensorineural hearing loss, microcephaly, and neurodevelopmental retardation can be observed during the follow-up. Among the brain magnetic resonance imaging (MRI) findings of CMV are white matter abnormalities, polymicrogyria, and periventricular calcification. Since a definitive diagnosis of congenital CMV cannot be made after the neonatal period, the identification of the associated phenotype is diagnostically important, but data are limited in patients who have been retrospectively diagnosed with congenital CMV infection. The aim of this study was to evaluate the short- and long-term neurological follow-up results of congenital CMV infections in a tertiary hospital. Materials and methods: The neurological results of fifteen patients under the age of 18 years, who had a definitive diagnosis of congenital CMV infection and were followed up in a tertiary care hospital between 2011 and 2020, were retrospectively evaluated. Results: Ten of the patients in our study group were male. The mean age at presentation for neurological evaluation was 2.02 ± 1.54 months, with a median follow-up time of 36.3 months (range: 9.3-129.4 months). Neurological disorders detected during the long-term follow-up included cerebral palsy (46.7%), cognitive impairment (46.7%), epilepsy (40%), and sensorineural hearing loss (26.7%). The most common abnormality observed on MRI scans was white matter involvement (53.3%). Conclusion: Early diagnosis and intervention are crucial in congenital CMV infection, as it commonly results in neurological involvement among the patients in our series. This preventable condition warrants further research regarding prenatal/neonatal screening.
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Infecciones por Citomegalovirus , Imagen por Resonancia Magnética , Humanos , Infecciones por Citomegalovirus/congénito , Infecciones por Citomegalovirus/complicaciones , Infecciones por Citomegalovirus/diagnóstico por imagen , Masculino , Femenino , Estudios Retrospectivos , Lactante , Recién Nacido , Preescolar , Niño , Pérdida Auditiva Sensorineural/virologíaRESUMEN
Objective: To assess the clinical features and effectiveness of antiviral therapy in newborns with sensorineural hearing loss (SNHL) caused by congenital congenital cytomegalovirus (cCMV) infection, and to speculate the risk factors for poor hearing outcomes. Methods: A multicenter prospective cohort study wasconducted, enrolling 176 newborns diagnosed with cCMV at four research centers in Zhejiang Province from March 1, 2021, to April 30, 2024. Clinical characteristics at birth were recorded and hearing was followed up. The children were divided into groups based on their condition at birth, specifically into asymptomatic, mild symptom, and moderate to severe symptom groups. Additionally, they were divided into SNHL and normal hearing groups based on the results of air conduction brainstem audiometry at birth. And they were also divided into treatment and untreated groups according to antiviral treatment. Mann Whitney U test, and chi square test were used for inter group comparison to analyze the differences in clinical features between different disease groups, and to analyze the effects of clinical features, antiviral therapy, and other factors on hearing improvement. Logistic regression analysis was employed to identify the risk factors influencing hearing outcomes. Results: Among the cohort of 176 children diagnosed infection with cCMV, 90 cases were male and 86 cases were female. Of these, 79 cases were asymptomatic, 12 cases classified as mild cCMV and 85 cases as moderate to severe cCMV. Fifty cases belonged to SNHL group, with different degrees of severity, including 30 cases of mild, 9 cases of moderate, 5 cases of severe, and 6 cases of extremely severe SNHL. Among the 121 cases in the normal hearing group, 2 cases (1.7%) exhibited late-onset hearing loss despite having normal hearing at birth. Among 81 cases (46.0%) who completed the hearing follow-up, 71 cases (87.7%) had good hearing outcomes and 10 cases (12.3%) had poor hearing outcomes. Among the 81 children, 29 cases (35.8%) had SNHL at birth. During follow-up, the hearing threshold improved in 19 cases (65.5%), remained stable in 7 cases (24.1%) and progressed in 3 cases (10.3%). A total of 26 cases in the treatment group and 55 cases in the untreated group completed the hearing follow-up assessment. The rate of hearing improvement in the treatment group was found to be higher compared to the untreated group (13 cases (50.0%) vs. 6 cases (10.9%), χ2=15.00, P<0.01), with individuals in the treatment group having a 4.58 times greater likelihood of experiencing hearing improvement (RR=4.58,95%CI 1.96-10.70, P<0.05). However, no statistically significant difference was observed in hearing outcomes between the antiviral treatment group and the untreated group (RR=0.90, 95%CI 0.57-1.41, P=0.517). Multivariate analysis further confirmed SNHL (OR=11.58, 95%CI 2.10-63.93, P=0.005) and preterm birth (OR=4.98, 95%CI 1.06-23.41, P=0.042) as independent risk factors for poor hearing outcomes. Conclusions: SNHL resulting from cCMV infection presents symptoms at birth and can be improved by antiviral therapy. Poor hearing outcomes are associated with SNHL and prematurity.
Asunto(s)
Antivirales , Infecciones por Citomegalovirus , Pérdida Auditiva Sensorineural , Humanos , Infecciones por Citomegalovirus/congénito , Infecciones por Citomegalovirus/complicaciones , Masculino , Femenino , Recién Nacido , Estudios Prospectivos , Pérdida Auditiva Sensorineural/virología , Pérdida Auditiva Sensorineural/etiología , Antivirales/uso terapéutico , Factores de Riesgo , Citomegalovirus , Lactante , Modelos LogísticosRESUMEN
Cytomegalovirus (CMV) is the leading infectious cause of brain defects and neurological dysfunctions, including sensorineural hearing loss (SNHL). Targeted screening in neonates failing the hearing screen is currently recommended in Italy according to national guidelines. However, SNHL may not be present at birth; also, congenital CMV (cCMV) may manifest with subtle signs other than SNHL. Therefore, the inclusion of additional criteria for cCMV screening appears clinically valuable. Starting January 2021, we have implemented expanded targeted cCMV screening at our center, with testing in case of maternal CMV infection during pregnancy, inadequate antenatal care, maternal HIV infection or immunosuppression, birthweight and/or head circumference < 10th centile, failed hearing screen, and prematurity. During the first three years of use of this program (2021-2023), 940 (12.3%) of 7651 live-born infants were tested. The most common indication was birthweight < 10th centile (n = 633, 67.3%). Eleven neonates were diagnosed as congenitally infected, for a prevalence of 1.17% (95%CI 0.48-1.86) on tested neonates and of 0.14% (95%CI 0.06-0.23) on live-born infants. None of the cCMV-infected newborns had a failed hearing screen as a testing indication. Implementation of an expanded cCMV screening program appears feasible and of clinical value.
Asunto(s)
Infecciones por Citomegalovirus , Citomegalovirus , Tamizaje Neonatal , Complicaciones Infecciosas del Embarazo , Humanos , Infecciones por Citomegalovirus/congénito , Infecciones por Citomegalovirus/diagnóstico , Recién Nacido , Femenino , Tamizaje Neonatal/métodos , Embarazo , Italia/epidemiología , Citomegalovirus/genética , Citomegalovirus/aislamiento & purificación , Complicaciones Infecciosas del Embarazo/diagnóstico , Complicaciones Infecciosas del Embarazo/virología , Masculino , Pérdida Auditiva Sensorineural/virología , Pérdida Auditiva Sensorineural/diagnóstico , PrevalenciaRESUMEN
PURPOSE OF REVIEW: Universal and targeted screening of newborns for congenital cytomegalovirus (CMV) infection is increasing globally. Questions remain concerning the management of infants who have been identified with congenital CMV infection, especially those with "minimally symptomatic" or clinically inapparent infection. Our objective is to discuss current management of CMV-infected neonates with a focus on less affected infants with or without sensorineural hearing loss (SNHL). RECENT FINDINGS: Valganciclovir is being prescribed increasingly in neonates with congenital CMV infection for improvement in hearing outcomes through 2 years of age. Treatment initiated in the first month of age is recommended for clinically apparent disease. A recent study showed hearing improvement at 18-22âmonths of age when therapy was initiated at age 1-3 months in infants with clinically inapparent CMV infection and isolated SNHL. SUMMARY: Antiviral therapy with either ganciclovir or valganciclovir has shown moderate benefit in prevention of hearing deterioration among infants with clinically apparent CMV infection or isolated SNHL. Sustainability of benefit beyond 2 years of age remains unknown. At present, infants with clinically inapparent CMV infection (normal complete evaluation including hearing) should not receive antiviral therapy. All CMV-infected infants require close audiological and neurodevelopmental follow-up.
Asunto(s)
Antivirales , Infecciones por Citomegalovirus , Ganciclovir , Pérdida Auditiva Sensorineural , Valganciclovir , Humanos , Infecciones por Citomegalovirus/congénito , Infecciones por Citomegalovirus/tratamiento farmacológico , Infecciones por Citomegalovirus/diagnóstico , Infecciones por Citomegalovirus/complicaciones , Antivirales/uso terapéutico , Pérdida Auditiva Sensorineural/virología , Pérdida Auditiva Sensorineural/diagnóstico , Pérdida Auditiva Sensorineural/etiología , Recién Nacido , Valganciclovir/uso terapéutico , Ganciclovir/uso terapéutico , Ganciclovir/análogos & derivados , Lactante , Tamizaje Neonatal/métodosRESUMEN
PURPOSE OF REVIEW: Congenital CMV (cCMV) infection is the most common infection of newborns and a leading cause of hearing loss and other neurologic disabilities in children. This review focuses on the diagnosis, presentation and management of cCMV infection. RECENT FINDINGS: Cytomegalovirus is one of the leading causes of sensorineural hearing loss in children. It also leads to neurodevelopmental disabilities and learning problems throughout childhood in both symptomatic and asymptomatic newborns. Urine and saliva PCR testing are the preferred methods of testing newborn infants for cCMV. In recent years, newborn-targeted and universal screening programs have been implemented in several states and major medical centers with the goal of identifying infected infants at risk for hearing loss. Treatment for infants diagnosed with cCMV infection should be limited to those who are moderately to severely symptomatic at birth with cCMV infection, though treatment may be beneficial for children who are asymptomatic with isolated sensorineural hearing loss. SUMMARY: As more children with cCMV are being identified through newborn screening, understanding the clinical presentation and sequelae is important for appropriate management of children with cCMV.
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Infecciones por Citomegalovirus , Pérdida Auditiva Sensorineural , Tamizaje Neonatal , Humanos , Infecciones por Citomegalovirus/diagnóstico , Infecciones por Citomegalovirus/congénito , Infecciones por Citomegalovirus/terapia , Infecciones por Citomegalovirus/tratamiento farmacológico , Recién Nacido , Tamizaje Neonatal/métodos , Pérdida Auditiva Sensorineural/diagnóstico , Pérdida Auditiva Sensorineural/virología , Antivirales/uso terapéutico , Citomegalovirus/aislamiento & purificación , Manejo de la EnfermedadRESUMEN
OBJECTIVE: The objective of this study was to determine if valganciclovir initiated after 1 month of age improves congenital cytomegalovirus-associated sensorineural hearing loss. STUDY DESIGN: We conducted a randomized, double-blind, placebo-controlled phase 2 trial of 6 weeks of oral valganciclovir at US (n = 12) and UK (n = 9) sites. Patients of ages 1 month through 3 years with baseline sensorineural hearing loss were enrolled. The primary outcome was change in total ear hearing between baseline and study month 6. Secondary outcome measures included change in best ear hearing and reduction in cytomegalovirus viral load in blood, saliva, and urine. RESULTS: Of 54 participants enrolled, 35 were documented to have congenital cytomegalovirus infection and were randomized (active group: 17; placebo group: 18). Mean age at enrollment was 17.8 ± 15.8 months (valganciclovir) vs 19.5 ± 13.1 months (placebo). Twenty (76.9%) of the 26 ears from subjects in the active treatment group did not have worsening of hearing, compared with 27 (96.4%) of 28 ears from subjects in the placebo group (P = .09). All other comparisons of total ear or best ear hearing outcomes were also not statistically significant. Saliva and urine viral loads decreased significantly in the valganciclovir group but did not correlate with change in hearing outcome. CONCLUSIONS: In this randomized controlled trial, initiation of antiviral therapy beyond the first month of age did not improve hearing outcomes in children with congenital cytomegalovirus-associated sensorineural hearing loss. CLINICAL TRIAL REGISTRATION: ClinicalTrials.gov identifier NCT01649869.
Asunto(s)
Antivirales , Infecciones por Citomegalovirus , Ganciclovir , Pérdida Auditiva Sensorineural , Valganciclovir , Humanos , Infecciones por Citomegalovirus/tratamiento farmacológico , Infecciones por Citomegalovirus/congénito , Infecciones por Citomegalovirus/complicaciones , Valganciclovir/uso terapéutico , Valganciclovir/administración & dosificación , Pérdida Auditiva Sensorineural/tratamiento farmacológico , Pérdida Auditiva Sensorineural/virología , Pérdida Auditiva Sensorineural/etiología , Antivirales/uso terapéutico , Antivirales/administración & dosificación , Masculino , Femenino , Método Doble Ciego , Lactante , Administración Oral , Ganciclovir/análogos & derivados , Ganciclovir/uso terapéutico , Ganciclovir/administración & dosificación , Preescolar , Resultado del Tratamiento , Carga Viral , Recién NacidoRESUMEN
OBJECTIVE: To evaluate the correlation of neonatal parameters with late-onset sensorineural hearing loss (SNHL) and vestibular dysfunction in individuals with congenital cytomegalovirus (cCMV) infection using the National Health Insurance Research Database (NHIRD) in Taiwan. DESIGN: Retrospective cohort study. SETTING: The whole Taiwanese population. PARTICIPANTS: Patients with related diagnostic codes and examinations in their records were regarded as having cCMV infection. Each subject in that group was matched to 10 control individuals with noncongenital CMV infection on the basis of several neonatal parameters, including low gestational age, low birth weight, low Apgar score, maternal history of CMV infection and prolonged cCMV infection. A total of 5893 and 58 930 participants were enrolled in the study and control groups, respectively. MAIN OUTCOME MEASURES: The main outcomes were the development of SNHL and the development of vestibular dysfunction within one year after birth as reflected by diagnostic codes and specific examinations. Cox proportional hazard regression was used to calculate the adjusted hazard ratio (HR) and 95% confidence interval (CI) of each primary outcome between the two groups. RESULTS: Overall, 109 and 397 episodes of SNHL developed in the study group and the control group, respectively, and the study group demonstrated a significantly higher incidence of SNHL (adjusted HR: 2.56; 95% CI: 2.07-3.18). In addition, similar incidence rates of vestibular dysfunction were found in the study group and the control group, with 7 and 90 events, respectively (adjusted HR: 0.77; 95% CI: 0.36-1.67). In subgroup analyses, a higher incidence of SNHL was correlated with lower gestational age (GA) (adjusted HR: 2.09; 95% CI: 1.29-3.39), lower birth weight (BW) (adjusted HR: 2.05; 95% CI: 1.28-3.30) and prolonged cCMV infection (adjusted HR: 3.92; 95% CI: 1.95-7.88). CONCLUSIONS: Low GA, low BW and a long disease course are significantly correlated with late-onset SNHL in cCMV infection.
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Infecciones por Citomegalovirus/congénito , Infecciones por Citomegalovirus/complicaciones , Pérdida Auditiva Sensorineural/virología , Enfermedades Vestibulares/virología , Niño , Preescolar , Estudios de Cohortes , Femenino , Humanos , Lactante , Recién Nacido , Masculino , Tamizaje Neonatal , Estudios Retrospectivos , Factores de RiesgoRESUMEN
Although sensorineural hearing loss (SHL) is relatively common, its cause has not been identified in most cases. Previous studies have suggested that viral infection is a major cause of SHL, especially sudden SHL, but the system that protects against pathogens in the inner ear, which is isolated by the blood-labyrinthine barrier, remains poorly understood. We recently showed that, as audiosensory receptor cells, cochlear hair cells (HCs) are protected by surrounding accessory supporting cells (SCs) and greater epithelial ridge (GER or Kölliker's organ) cells (GERCs) against viral infections. Here, we found that virus-infected SCs and GERCs induce HC death via production of the tumour necrosis factor-related apoptosis-inducing ligand (TRAIL). Notably, the HCs expressed the TRAIL death receptors (DR) DR4 and DR5, and virus-induced HC death was suppressed by TRAIL-neutralizing antibodies. TRAIL-induced HC death was not caused by apoptosis, and was inhibited by necroptosis inhibitors. Moreover, corticosteroids, the only effective drug for SHL, inhibited the virus-induced transformation of SCs and GERCs into macrophage-like cells and HC death, while macrophage depletion also inhibited virus-induced HC death. These results reveal a novel mechanism underlying virus-induced HC death in the cochlear sensory epithelium and suggest a possible target for preventing virus-induced SHL.
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Células Ciliadas Auditivas/virología , Pérdida Auditiva Sensorineural/virología , Necroptosis , Ligando Inductor de Apoptosis Relacionado con TNF/inmunología , Virosis/complicaciones , Animales , Células Cultivadas , Células Ciliadas Auditivas/inmunología , Células Ciliadas Auditivas/patología , Pérdida Auditiva Sensorineural/inmunología , Pérdida Auditiva Sensorineural/patología , Ratones Endogámicos ICR , Virosis/inmunología , Virosis/patologíaRESUMEN
OBJECTIVES: The symptoms of COVID-19 at the time of presentation mainly include fever, cough, respiratory distress and myalgia. On the other hand, as neurological symptoms, disruption of taste and smell and cerebrovascular pathologies are well-known, whereas other neurological symptoms and signs are being newly recognized. Sudden-onset sensorineural hearing loss (SSNHL) and idiopathic acute facial paralysis (Bell's palsy) are otologic emergencies that are frequently encountered by otorhinolaryngology specialists. Although there are many articles describing SSNHL and Bell's palsy in the literature, the literature describing their relationship to COVID-19 is limited. In our study, we aimed to present the neuro-otologic relationship of SSNHL and Bell's palsy with COVID-19. MATERIAL AND METHODS: The pretreatment real-time oronasopharyngeal PCR tests, COVID-19 symptomatology and COVID-19 infection statuses of patients who presented to our clinic with isolated SSNHL and Bell's palsy between April 2020 and April 2021 were questioned, and the data of the patients were collected. Throughout their treatment, the patients were followed-up in terms of COVID-19 infection. This is a prospective study. Moreover, to observe the change in the incidence, the data of patients visiting between January 2019 and January 2020 were also collected. The data of the patients were statistically analyzed using SPSS. RESULTS: The study included a total of 177 patients. The SSNHL group consisted of 91 patients, and the Bell's palsy group consisted of 86 patients. Neither group showed a statistically significant difference in comparison to the year without the pandemic in terms of the patient numbers (incidence), sex, age, morbidity, response to treatment or social habits. There was a statistically significant difference in age only in the Bell's palsy group, but this difference was not medically significant. CONCLUSION: As a result of our study, we did not observe a relationship between COVID-19 and cases of SSNHL and Bell's palsy. It is recommended to apply standard otologic treatment to isolated SSNHL and Bell's palsy patients whose association with COVID-19 is not determined.
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Parálisis de Bell/epidemiología , COVID-19/complicaciones , Parálisis Facial/epidemiología , Pérdida Auditiva Sensorineural/epidemiología , Pérdida Auditiva Súbita/epidemiología , Adulto , Anciano , Parálisis de Bell/diagnóstico , Parálisis de Bell/virología , COVID-19/diagnóstico , COVID-19/epidemiología , Parálisis Facial/diagnóstico , Parálisis Facial/virología , Femenino , Pérdida Auditiva Sensorineural/diagnóstico , Pérdida Auditiva Sensorineural/virología , Pérdida Auditiva Súbita/diagnóstico , Pérdida Auditiva Súbita/virología , Humanos , Incidencia , Masculino , Persona de Mediana Edad , Estudios Prospectivos , Evaluación de Síntomas , TurquíaRESUMEN
To describe the audio-vestibular disorders related to the newly SARS-CoV-2 infection, including the possible ototoxicity side-effects related to the use of drugs included in the SARS-CoV-2 treatment protocols. A systematic review was performed according to the PRISMA protocol. The Medline and Embase databases were searched from March 1, 2020 to April 9, 2021. Initially the search yielded 400 manuscripts, which were reduced to 15, upon the application of inclusion criteria. Sensorineural hearing loss (SNHL) is the most frequent audio-vestibular symptom described, occurring alone or in association with tinnitus and vertigo. The etiopathogenesis of the inner ear disorders related to COVID-19 infection is still poorly understood. The number of reports of COVID-19 infections associated to audio-vestibular disorders is increasing; even if the quality of the studies available is often insufficient, audio-vestibular disorders should be considered as possible manifestations to be included among the symptoms of this infection.
Asunto(s)
COVID-19/complicaciones , Pérdida Auditiva Sensorineural/etiología , Ototoxicidad/etiología , SARS-CoV-2/patogenicidad , Enfermedades Vestibulares/etiología , Pérdida Auditiva Sensorineural/virología , Humanos , Ototoxicidad/virología , Enfermedades Vestibulares/virologíaRESUMEN
BACKGROUND: The incidence of congenital cytomegalovirus (CMV) infection in Israel is 0.7%. Only 10-15% are symptomatic. Valganciclovir has been shown to improve hearing and neurodevelopmental outcomes in neonates with symptomatic congenital CMV infection. Targeted examination of infants who fail routine neonatal hearing screening or have clinical or laboratory findings suggestive of symptomatic congenital CMV infection may be a cost-effective approach. OBJECTIVES: To assess the possibility of targeted examination for the detection of newborns with symptomatic congenital CMV infection. METHODS: A prospective observational study was conducted in 2014-2015 at two medical centers in northern Israel. Included were all newborns who were tested in the first 3 days of life by polymerase chain reaction (PCR) for urine CMV DNA (n=692), either for failure the hearing screening (n=539, 78%), clinical or laboratory findings suggestive of symptomatic congenital CMV infection, or primary CMV infection during pregnancy (n=153, 22%). RESULTS: During the study period 15,433 newborns were born. The predicted rate of infection was 10-15% (symptomatic) of 0.7% of newborns, namely 0.07-0.105% or 10-15 infants. In fact, 15 infants (0.11%, 95% confidence interval 0.066-0.175) were diagnosed with symptomatic congenital CMV infection, 2/539 (0.37%) in the failed hearing group and 13/153 (8%) in the clinical/laboratory findings group. The incidence of symptomatic congenital CMV infection was within the predicted range. CONCLUSIONS: Targeted examination of only 4.5% (n=692) of newborns detected the predicted number of infants with symptomatic congenital CMV infection in whom valganciclovir therapy is recommended.
Asunto(s)
Infecciones por Citomegalovirus/diagnóstico , Pérdida Auditiva Sensorineural/diagnóstico , Tamizaje Neonatal/métodos , Reacción en Cadena de la Polimerasa , Antivirales/administración & dosificación , Infecciones por Citomegalovirus/congénito , Infecciones por Citomegalovirus/tratamiento farmacológico , ADN Viral/orina , Femenino , Pérdida Auditiva Sensorineural/virología , Humanos , Incidencia , Recién Nacido , Israel , Embarazo , Complicaciones Infecciosas del Embarazo/virología , Estudios Prospectivos , Valganciclovir/administración & dosificaciónRESUMEN
BACKGROUND: Sudden sensorineural hearing loss (SSNHL) is commonly encountered in otolaryngologic practice. SARS-CoV-2 infection is typically marked by respiratory symptoms although neurologic manifestations of the disease have also been described. OBJECTIVE: We want to measure the incidence and clinical aspects of persons exhibiting in otolaryngology clinic (OC) with SSNHL during the COVID-19 widespread and in the constant interval of previous year. METHODS: We retrospectively inspected the medical information for admissions to OC in Eskisehir, Turkey, during the COVID-19 widespread to describe the patients SSNHL. Clinical knowledge was saved for each subject and corresponded with that of SSNHL subjects demonstrating in 2019. RESULT: Between 1 April and 30 September 2020, 68 patients admitted to OC for SSNHL; in 2019, there were 41 subjects, for an incidence rate ratio of 8.5 per 100.000 (95% CI 1.02-2.92) for the 2020 cohort. Of the 2020 group, forty-one patients (60.3%) presented with active or recent symptoms consistent with COVID-19 infection, compared with four (9.8%) in 2019 (p < 0.001). Furthermore, subjects in 2020 group were younger (-15.5 years, p = 0.0141) than 2019 group and demonstrated prolonged interim (+1.7 days, p < 0.001) between SSNHL initiation and OC petition. CONCLUSION: We detected increased incidence of SSNHL during the COVID-19 widespread compared to the same interval of the prior year; 60.3% of subjects confronting with SSNHL had signs that were harmonious with COVID-19.
Asunto(s)
COVID-19/complicaciones , Pérdida Auditiva Sensorineural/epidemiología , Pérdida Auditiva Súbita/epidemiología , Adulto , Anciano , COVID-19/diagnóstico , COVID-19/epidemiología , Femenino , Pérdida Auditiva Sensorineural/diagnóstico , Pérdida Auditiva Sensorineural/virología , Pérdida Auditiva Súbita/diagnóstico , Pérdida Auditiva Súbita/virología , Humanos , Incidencia , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Factores de Riesgo , TurquíaRESUMEN
Hearing loss is one of the most prevalent sensory disabilities worldwide with huge social and economic burdens. The leading cause of sensorineural hearing loss (SNHL) in children is congenital cytomegalovirus (CMV) infection. Though the implementation of universal screening and early intervention such as antiviral or anti-inflammatory ameliorate the severity of CMV-associated diseases, direct and targeted therapeutics is still seriously lacking. The major hurdle for it is that the mechanism of CMV induced SNHL has not yet been well understood. In this review, we focus on the impact of CMV infection on the key players in inner ear development including the Wnt and Notch signaling pathways. Investigations on these interactions may gain new insights into viral pathogenesis and reveal novel targets for therapy.
Asunto(s)
Infecciones por Citomegalovirus/complicaciones , Citomegalovirus/patogenicidad , Regulación de la Expresión Génica , Pérdida Auditiva Sensorineural/virología , Receptores Notch/genética , Transducción de Señal , Proteínas Wnt/genética , Animales , Citomegalovirus/genética , Humanos , Ratones , Receptores Notch/metabolismo , Proteínas Wnt/metabolismoRESUMEN
BACKGROUND AND OBJECTIVES: Congenital cytomegalovirus (cCMV) is the leading nongenetic cause of sensorineural hearing loss and developmental disabilities. Because there are limited data from studies of vestibular involvement in select groups of children with cCMV, the true frequency of vestibular disorders in cCMV is likely underestimated. Our objective for this study is to determine the prevalence of vestibular, gaze, and balance disorders in a cohort of children with asymptomatic cCMV. METHODS: Comprehensive vestibular, gaze, and balance assessments were performed in 40 children with asymptomatic cCMV. The function of semicircular canals of the inner ear and vestibulo-visual tract were assessed by measuring vestibulo-ocular reflex in a computer-driven motorized rotary chair; inner ear saccular function was assessed by using cervical vestibular evoked myogenic potential; gaze stability during head movement was assessed by using clinical dynamic visual acuity, and balance was assessed by using the sensory organization test and the Bruininks-Oseretsky Test of Motor Proficiency, Second Edition. Test results for each variable were compared with those of a control group without cCMV and/or compared to age-matched normative published data. RESULTS: Vestibular disorders were evident in 45% of the cohort on the basis of rotary chair and cervical vestibular evoked myogenic potential testing, suggesting abnormalities in semicircular canals, the utricle and saccule of the inner ear, and vestibulo-visual tracts. Additionally, 46% of the cohort had difficulties maintaining gaze during head movement, and one-third to one-half of the cohort had difficulties maintaining balance. CONCLUSIONS: Vestibular, gaze, and balance disorders are highly prevalent in children with asymptomatic cCMV. Systematic screening for vestibular disorders will be used to determine the full clinical impact for the development of effective interventions.
Asunto(s)
Enfermedades Asintomáticas , Infecciones por Citomegalovirus/diagnóstico , Fijación Ocular/fisiología , Pérdida Auditiva Sensorineural/diagnóstico , Equilibrio Postural/fisiología , Enfermedades Vestibulares/diagnóstico , Niño , Estudios de Cohortes , Infecciones por Citomegalovirus/complicaciones , Femenino , Pérdida Auditiva Sensorineural/etiología , Pérdida Auditiva Sensorineural/virología , Humanos , Recién Nacido , Masculino , Tamizaje Neonatal/métodos , Enfermedades Vestibulares/etiología , Enfermedades Vestibulares/virologíaRESUMEN
OBJECTIVE: The correlation between enhancement of the vestibulocochlear nerves on gadolinium-enhanced magnetic resonance imaging (MRI) and vestibulocochlear functional deficits was examined in patients with Ramsay Hunt syndrome (RHS). METHODS: Nineteen patients with RHS who showed herpes zoster oticus, peripheral facial palsy, and vertigo were enrolled. Canal paresis (CP) in the caloric test, abnormal response to ocular and cervical vestibular myogenic potentials (oVEMP and cVEMP), and refractory sensorineural hearing loss were evaluated. MRI images perpendicular to the internal auditory canal were reconstructed to identify the superior (SVN) and inferior vestibular nerves (IVN) and the cochlear nerve (CV). The signal intensity increase (SIinc) of the four-nerve enhancement was calculated as an index. RESULTS: Among RHS patients, 79%, 53%, 17% and 26% showed CP in the caloric test, abnormal responses to oVEMP and cVEMP, and refractory sensorineural hearing loss, respectively. SIinc rates of the SVN were significantly increased in RHS patients with CP in the caloric test, and with abnormal responses to oVEMP and cVEMP. SIinc rates of the SVN tended to increase in RHS patients with refractory sensorineural hearing loss (p = 0.052). SIinc rates of the IVN were significantly increased in RHS patients with abnormal responses to oVEMP and cVEMP, and refractory sensorineural hearing loss, but not in those with CP in the caloric test. SIinc rates of the CN were significantly increased in RHS patients with CP in the caloric test, abnormal response to oVEMP and refractory sensorineural hearing loss, but not in those with abnormal response to cVEMP. CONCLUSION: In patients with RHS, the origin of vertigo may be superior vestibular neuritis, which is affected by reactive varicella-zoster virus from the geniculate ganglion of the facial nerve through the faciovestibular anastomosis. The results also suggested that in some RHS patients, inferior vestibular neuritis contributes to the development of vertigo and that the origin of refractory sensorineural hearing loss is cochlear neuritis.