Effects of high intensity interval training on neuro-cardiovascular dynamic changes and mitochondrial dysfunction induced by high-fat diet in rats

This research was supported by the Brazilian National Council for Scientific and Technologic Development (CNPq) (Grant number: 474116/2008-5) and Carlos Chagas Filho Foundation for Research Support in the State of Rio de Janeiro (FAPERJ) (Grant number: E-26/ 111.732/2011), both received by Eliete Bouskela. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.Peer reviewedPublisher PD

Cortical Auditory Evoked Potentials in Children with Prenatal Exposure to Zika Virus.

Prenatal exposure to ZIKV can cause neurologic and auditory damage. The electrophysiological responses obtained by Cortical Auditory Evoked Potentials (CAEP) may provide an objective method to investigate the function of cortical auditory pathways in children exposed to ZIKV. This case series analyzed the findings of CAEP in prenatal-period ZIKV-exposed children with and without microcephaly. The CAEP was performed in a total of 24 children. Five magnetic resonance imaging (MRI) images of the inner ear and brain of microcephalic children were analyzed and compared with CAEP measurements. Ventriculomegaly (80%), cortical/subcortical calcification (80%), and brain reduction (60%) were the most common alterations in the MRI. The P1-N1-P2 complex of the CAEP was observed in all children evaluated. The peak N2 was absent in two children. In the comparison of the CAEP measurements between the groups, children with microcephaly presented a higher amplitude of P2 (p = 0.017), which may reflect immaturity of the auditory pathways. Microcephalic and normocephalic children with prenatal exposure to ZIKV presented with the mandatory components of the CAEPs, regardless of changes in the CNS, suggesting that this population has, to some extent, the cortical ability to process sound stimuli preserved

Novo sistema de estabilização instrumental em microcirurgia laríngea New system of instrument stabilization in laryngeal microsurgery

A microcirurgia laríngea é uma forma de tratamento para diversas doenças da laringe. Devido à necessidade de instrumentos longos e manobras delicadas, movimentos involuntários representam importante dificuldade, podendo ser responsáveis por resultados pós-operatórios inadequados. OBJETIVO: Esse trabalho propõe um novo sistema de estabilização, flexível e versátil, para reduzir de forma significativa os movimentos involuntários apresentados pelo cirurgião. MATERIAL E MÉTODOS: Esse estudo experimental comparou a amplitude dos movimentos involuntários apresentados por cirurgiões com e sem o sistema de estabilização. Dez cirurgiões realizaram um total de seis manobras que mimetizavam movimentos utilizados nas microcirurgias de laringe, sendo duas delas sem o sistema de estabilização. As manobras eram repetidas com o sistema de estabilização e o fio tensionado, após isso o fio era então alongado 3 mm e as manobras eram executadas. As médias da deslocação máxima do instrumento foram comparadas entre os grupos. RESULTADOS: O deslocamento máximo foi maior na manobra com microtesoura parada sem o sistema, quando comparada com o sistema de estabilização em três situações diferentes. A média também foi maior na manobra de abrir-fechar a microtesoura sem o sistema de estabilização e com esse. CONCLUSÃO: O sistema de estabilização proposto foi eficaz na redução do tremor nas situações testadas.<br>Laryngeal microsurgery is a kind of treatment for various laryngeal diseases. Because of the need of long instruments and delicate maneuvers, involuntary movements represent relevant difficulty and may be responsible for unintended post-operative results. AIM: This study proposes a new stabilization system, flexible and versatile, which can significantly reduce involuntary movements made by surgeons. METHODS: This experimental study compared the amplitude of surgeons' involuntary movements with and without the stabilization system. Ten surgeons performed a total of six movements mimicking movements used in laryngeal microsurgery, two of them without the stabilization system. The maneuvers were repeated with the stabilization system and the wire stretched, and after this, the wire was then expanded 3mm and the maneuvers were performed. The average values of the maximum instrument displacement were compared between the groups. RESULTS: The maximum displacement was higher during the maneuver with the still micro-scissors without the system, when compared with the stabilization system in three different situations. The average was also higher in the maneuver to open and close the micro scissors without the system and with it. CONCLUSION: The proposed stabilization system was effective in reducing surgeon shaking in the different situations tested

Prótese auditiva: satisfação do usuário com sua prótese e com seu meio ambiente Hearing aid: user satisfaction with their hearing aid and with their environment

OBJETIVO: avaliar o nível de satisfação dos usuários com sua prótese auditiva e com seu meio ambiente. MÉTODOS: estudo descritivo de corte transversal, com 256 indivíduos (m= 48,33%; f= 51,67%), com idade média de 50 anos, recém protetizados, com perda auditiva do tipo sensorioneural (n= 268) e mista (n=32), através do questionário de auto-avaliação International Outcome Inventory for Hearing Aids - IOI-HA para determinar o grau do benefício e a satisfação dada pela amplificação sonora. RESULTADOS: para 68% o uso da prótese melhorou a qualidade de vida, evidenciado pela alta pontuação (média=26,45). A relação do usuário com sua prótese foi significativamente melhor (pPURPOSE: to evaluate the level of user satisfaction with the hearing aids and with their environment. METHODS: cross study of a group, with 256 subjects (m= 48.33%; f= 51.67%), average age of 50 years, just fitted with their hearing aid, with sensorioneural (n=268) and mixed (n=32) hearing impairment, through the Questionnaire International Outcome Inventory for Hearing Aids Outcome Inventory - IOI-HA to determine the degree of the benefit and the satisfaction brought by the sound amplification. RESULTS: for 68% the use of the hearing aids improved their quality of life, revealed by their high punctuation (mean= 26.45). The relationship of the user with its hearing aid was significantly better (p<0.001*) than that related to the environment. In the subjective evaluation of the auditory problems, 78.5% have stated to have auditory problem of light to moderate degree and 21.5% problems of moderately severe to severe. CONCLUSION: the IOI-HA is a tool, simple and easy to apply and it is used as an instrument in helping us during the period of acclimatization with the hearing aid. The improvement in the quality of life of the men that were most referred was about the satisfaction level with the hearing aid and with less impact concerning the others. The level of difficulties about the subjective problems referred in the daily life, was more useful than the information revealed in the audiogram. The analysis showed the strong association regarding the self perception with the degree of hearing loss. The subjects with perception of severe or moderately severe auditory loss degree showed more participation restriction in their life

Effect of sugarcane biopolymer gel injected in rabbit vocal fold

INTRODUCTION: Alterations in the vocal folds that involve volume reduction and glottal closure failure result in exaggerated air escape during speech. For such situations, the use of implants or grafts of different materials has been proposed. OBJECTIVE: To define the effect of sugarcane biopolymer gel when implanted in the vocal folds of rabbits. METHODS: This was an experimental study. The vocal folds of rabbits injected with sugarcane biopolymer and saline solution were histologically evaluated after 21 and 90 days. RESULTS: Mild to moderate inflammation and increased volume were observed in all vocal folds injected with biopolymer, when compared to controls. There were no cases of necrosis or calcification. DISCUSSION: This study showed higher inflammatory reaction in cases than in controls and biopolymer biointegration to the vocal fold. This fibrogenic response with absence of epithelial repercussions suggests that the biopolymer in its gel form can be bioactive and preserve the normal vibratory function of the epithelium. CONCLUSION: We show that in spite of producing an inflammatory reaction in vocal fold tissues, the material remained in vocal fold throughout the study period

Middle ear packing materials: comparison between absorbable hemostatic gelatine sponge and sugarcane biopolymer sponge in rats

INTRODUCTION: Several biomaterials can be used in ear surgery to pack the middle ear or support the graft. The absorbable gelatin sponge is the most widely used, but it may produce fibrosis and impair ventilation of the middle ear. OBJECTIVE: This experimental study aimed to investigate the inflammatory effects of the sugarcane biopolymer sponge (BP) in the rat middle ear compared with absorbable gelatin sponge (AGS). MATERIALS AND METHODS: Prospective experimental study design. Thirty adult female Wistar rats were allocated to receive the BP sponge into the right ear and AGS into the left ear. Animals were randomly killed at 4 and 12 weeks post-procedure. Qualitative histological assessments were performed to evaluate the inflammatory reaction in the tympanic bullae. RESULTS: The BP sponge caused inflammation more intense and persistent than AGS. The BP was not absorbed during the experiment. Fibrosis was observed only in the ears with AGS. There were thickening of the mucosa and neoangiogenesis in the group of AGS. CONCLUSION: Despite inflammation, the BP sponge produced less fibrosis and neoangiogenesis compared to AGS. The sponge BP appeared to be a non-absorbable biomaterial in the middle ear

Conhecimento de ginecologistas e pediatras de hospitais públicos do Recife a respeito dos fatores de risco para surdez The knowledge of gynecologists and pediatricians from Recife public hospitals about hight risk factors for deafness

A audição é uma das principais formas de ligação entre o ser humano e o ambiente no qual ele vive, porém, a deficiência auditiva ainda é diagnosticada tardiamente no Brasil interferindo diretamente no desenvolvimento global da criança. OBJETIVO: Verificar o conhecimento de pediatras e ginecologistas a respeito dos fatores de risco para a surdez, o modo de aquisição do conhecimento e ocorrência de orientação aos pais a respeito do tema. MATERIAL E MÉTODO: Participaram 119 médicos, pertencentes a três hospitais públicos da cidade do Recife. Foi aplicada uma entrevista, antes e após campanha de esclarecimento sobre o tema. O estudo foi descritivo, transversal, tipo série de casos. A análise dos dados foi descritiva. RESULTADOS: Constatou-se que apenas 3 dos 18 fatores de risco para surdez listados obtiveram respostas acima de 50% na etapa inicial e 53,84% dos profissionais faziam orientações as famílias. Todas as respostas aumentaram na segunda etapa. CONCLUSÃO: Existe uma maior necessidade de campanhas de orientação, as ações de atenção primária à surdez constituem o meio mais barato e eficaz no combate a perda auditiva. Os otorrinolaringologistas e fonoaudiólogos devem estar presentes desempenhando trabalho educativo e de diagnóstico que visa intervenção o mais cedo possível.<br>Hearing is one of the main forms of connection between human being and the environment; however, hearing loss is still diagnosed very late in Brazil, which directly interferes with the child's development. AIM: The aim of this study was to check the knowledge pediatricians and gynecologists have about the risk factors for the deafness, the way they acquired such knowledge and parent education about the subject. MATERIALS AND METHODS: We enrolled 119 doctors from three public hospitals of the city of Recife. An interview was applied, before and after the educational campaign on the matter. The study was descriptive, cross-sectional, case series-type. Data analysis was descriptive and inferential. RESULTS: The results showed that only 3 of the 18 hearing loss risk factors listed had gotten answers above 50% in the initial stage of the study and 53.84% of the professionals educated the families. All the answers had increased in the second stage. CONCLUSION: The results emphasize the need to pay more attention to this matter; therefore, primary care is an inexpensive and efficient way to fight hearing loss