Sergio Tufik's research while affiliated with Universidade Federal de São Paulo and other places

Publications (621)

Article
Full-text available
Abstract Objective: The present prospective clinical study aimed to investigate the effects of rapid maxillary expansion on the airway, correlating airway volumes obtained on multi-slice computed tomography and polysomnography assessment of oxygen saturation and apnea/hypopnea index. Methods: Twenty-four patients (11 with obstructive sleep apnea an...
Article
Introduction The COVID-19 pandemic has subjected most of the world population to changes in daily life activities, mostly related to social isolation, family distancing and home confinement. Children with autism spectrum disorder (ASD) and other neurodevelopmental syndromes, such as cri du chat syndrome (CDC) might be especially sensitive to the co...
Article
Introduction Sleepiness is a behavioural consequence of sleep pressure and is associated with negative outcomes with interindividual variation, possibly related to central sleep mechanisms. However, there is a lack of evidence linking progressive sleep need and sleepiness with factors of individual variability, which could be tested by total acute...
Article
Full-text available
Cutaneous homeostasis is modulated by sleep. Although there is little evidence about the efficacy of medications topically applied in the morning compared to those administered in the evening, they are commonly prescribed to be used overnight. Poor sleep may affect the tegument, but its repercussion on dermatological therapy is not clear. This comm...
Article
Objective To establish the prevalence of upper airway resistance syndrome (UARS) according to different diagnostic criteria and evaluate its epidemiological characteristics in a representative sample of a large urban center. Methods This was a single-center evaluation involving volunteers from EPISONO, an epidemiological study focused on sleep dis...
Article
Full-text available
Purpose The identification of subgroups of obstructive sleep apnea (OSA) is critical to understand disease outcome and treatment response and ultimately develop optimal care strategies customized for each subgroup. In this sense, we aimed to perform a cluster analysis to identify subgroups of individuals with OSA based on clinical parameters in the...
Article
Full-text available
Purpose Obstructive sleep apnea (OSA) is a chronic sleep disorder, and its prevalence is increasing worldwide. This disorder has been consistently associated with several comorbidities. Although it is clear that obstructive sleep apnea severity is associated with inflammation, the trigger for this phenomenon continues to puzzle scientists. Here, we...
Article
Multiple elements modulate drug use, including sleep, which is increasingly being considered as an important contributor to substance use and abuse. The present study aimed to evaluate the association between sleep, psychiatric and socioeconomic/demographic factors and substance use in a large-scale representative sample from the city of São Paulo,...
Article
Aim To evaluate the thermographic characteristics of orofacial structures and submental triangle of participants with obstructive sleep apnea (OSA), as well as to investigate its correlation with the anatomy, posture and functions of the orofacial structures. Method Eighteen patients diagnosed with OSA by polysomnography (OSA group; 57.4±15.8 year...
Article
Telogen effluvium (TE), a common hair disease, is supposed to be related to stress, which could be secondary to poor sleep. We call attention to the current COVID‐19 pandemic, that is leading to an increase in the prevalence of sleep disturbances, and as a consequence, higher states of stress and anxiety, which are possible triggers for TE. In para...
Article
Full-text available
Purpose: The negative association between obstructive sleep apnea (OSA) and adverse cardiovascular outcomes in patients undergoing percutaneous coronary intervention (PCI) is well documented. However, little is known about the influence of OSA on fibrinolytic therapy. The aim of this study was to evaluate the impact of severe OSA on pharmacoinvasi...
Article
Misuse of prescription medications has risen to popularity. Reasons for this practice include the self-medication of sleep and psychiatric disorders and attempts to counteract the dysphoric side effects of stimulant drugs. Clonazepam, a commonly prescribed benzodiazepine, has been increasingly used as a countermeasure to cocaine side-effects, inclu...
Article
Full-text available
Glutamate is the most excitatory neurotransmitter in the central nervous system and it is involved in the initiation and maintaining of waking and rapid-eye-movement (REM) sleep. Homer proteins act in the trafficking and/or clustering of metabotropic glutamate receptors, and polymorphisms in the HOMER1 gene have been associated with phenotypes rela...
Article
Background: It is well-established that sleep regulates immune functions. Immunological functions are dependent on circadian rhythms and regular sleep as both have an impact on the magnitude of immune responses following antigenic challenge (eg, in vaccination). Here we investigated whether nocturnal shift work can influence post-vaccination respo...
Article
Introduction Narcolepsy is a sleep disorder associated with loss of hypocretin cells characterized by irrepressible need to sleep, often accompanied by cataplexy, sleep fragmentation, hypnagogical and hypnopompic hallucinations and sleep paralysis. It is also correlated with alterations in the sleep-wake cycle, dysautonomia, olfactory dysfunction,...
Article
Full-text available
Objective: To evaluate the safety and efficacy of a 5 mg sublingual dose of zolpidem, compared to a 10 mg oral dose, at bedtime and “as needed” following middle-of-the-night awakenings. Methods: Participants were randomized into an oral group (oral zolpidem 10 mg and sublingual placebo at bedtime and “as-needed”) and a sublingual group (oral place...
Article
Full-text available
Our aim was to explore the influence of sleep and circadian preference on upper extremity (UE) rehabilitation in stroke patients after constraint-induced movement therapy (CIMT) in a cross-sectional retrospective observational study. Forty-three patients were selected to complete questionnaires on circadian preference, sleep quality, excessive dayt...
Article
Full-text available
Resumo O uso de animais para fins didáticos e de pesquisa requer cuidados específicos. Atualmente, vigora no Brasil a Lei 11.794/2008, que rege parâmetros legais de manejo e conduta neste caso. Esta lei foi acompanhada da instalação ou adequação de comissões de ética em instituições que utilizam animais para ensino e investigação, bem como da criaç...
Article
Objective/background: Obstructive sleep apnea (OSA) is a sleep-related breathing disorder that has a complex phenotype. Currently, few genes have been linked with OSA. Thus, the aim of this study was to conduct a genome-wide association study (GWAS) of the apnea-hypopnea index (AHI) variation along time (delta-AHI) in a prospective cohort. Method...
Article
Full-text available
Background: Studies on adults have reported inverse association between the homeostatic model assessment (HOMA) of adiponectin (HOMA-Adiponectin) and the insulin resistance assessed by the glucose clamp technique. To our knowledge, in the pediatric population this association has not been previously investigated. Objectives: To evaluate the asso...
Article
Full-text available
Introduction: Manual titration is the gold standard to determinate optimal continuous positive airway pressure, and the prediction of the optimal pressure is important to avoid delays in prescribing a continuous positive airway pressure treatment. Objective: To verify whether anthropometric, polysomnographic, cephalometric, and upper airway clin...
Article
Background: Exercise and CPAP improve OSA. This study examined the effects of exercise in patients with heart failure (HF) and OSA. Methods: Patients with HF and OSA were randomized to the following study groups: control, exercise, CPAP, and exercise + CPAP. Results: Sixty-five participants completed the protocol. Comparing baseline vs 3 month...
Article
Objective: To compare vascular endothelial function between dipping (D) and nondipping (ND) patterns in patients with and without mild obstructive sleep apnea (OSA) using EndoPAT, a test of reactive hyperemia used to assess peripheral vascular endothelial function. Methods: The sample consisted of individuals of both genders between 18 and 65 ye...
Article
Obstructive sleep apnea (OSA) is a frequent sleeping breathing disorder associated with cognitive impairments. Neprilysin (NEP) is responsible for degrading several substrates related to cognition; however, the effect of chronic intermittent hypoxia (CIH) on NEP is still unknown. This study aimed to evaluate the expression and activity of NEP under...
Article
Sleep deprivation (SD) and amphetamine use are commonly associated conditions. SD shares similar neurobiological effects with psychostimulants, playing an important role in drug addiction, especially through conditioning manipulations. The aim of the present study was to investigate the effects of SD on the development of amphetamine-induced condit...
Article
Full-text available
Introduction: Sleep deprivation can impair several physiological systems and recently, new evidence has pointed to the relationship between a lack of sleep and carbohydrate metabolism, consequently resulting in insulin resistance. To minimize this effect, High-Intensity Interval Training (HIIT) is emerging as a potential strategy. Objective: The ai...
Article
Objectives: To evaluate the long term effects of an oral appliance on clinical symptoms, respiratory sleep parameters, sleep quality and sustained attention in patients with Upper Airway Resistance Syndrome (UARS) compared with placebo. Methods: This study was a randomized placebo-controlled clinical trial. Thirty UARS patients were randomized i...
Article
Full-text available
This study analyzed the effects of carbohydrate and glutamine supplementation on salivary immunity after exercise at a simulated altitude of 4500 m. Fifteen volunteers performed exercise of 70% of VO2peak until exhaustion and were divided into three groups: hypoxia placebo, hypoxia 8% maltodextrin (200 mL/20 min), and hypoxia after six days glutami...
Article
Full-text available
Atualmente a SAOS é reconhecida como um preditor independente para a obesidade, e esta, por sua vez, caracteriza-se como o principal fator de risco para a SAOS. Com isso, o presente artigo visa revisar a literatura existente sobre a relação entre SAOS e obesidade, considerando os aspectos endócrinos e metabólicos desta relação, bem como discutir o...
Article
Objective: Our aim was to investigate the influence of an acute exercise session on sleep pattern in rats with temporal lobe epilepsy (TLE). Methods: Twenty male Wistar rats were randomly assigned to 4 groups: control (C); acute exercise (EX); epilepsy (E) and epilepsy acute exercise (EEX). Two sleep electrocorticography recordings were performe...
Article
Full-text available
Introdução: A poluição do ar é um importante fator ambiental relacionado a doenças crônicas não transmissíveis, como doenças cardiovasculares e respiratórias. Essa relação torna-se importante em cidades com alta atividade industrial, como Vitória/ES. Esta pesquisa utilizou três revisões sistemáticas (RSs) distintas para avaliar a epidemiologia das...
Article
Full-text available
Sleep duration varies widely across individuals and appears to be trait-like. Differences in the stability of underlying sleep processes may underlie this phenomenon. To investigate underlying mechanisms, we examined the relationship between sleep duration and sleep continuity in baseline polysomnography (PSG) recordings from three independently co...
Article
Full-text available
Background: Resistance training promotes cardiovascular health benefits that may affected by sleep deprivation. Objective: To evaluate the effect of high-intensity resistance training on myocardial contractility in rats subsequently subjected to paradoxical sleep deprivation. Methods: Forty male Wistar rats were distributed into control group (CT...
Article
Intravenous injections of potassium cyanide (KCN) both elicit escape by its own and facilitate escape to electrical stimulation of the periaqueductal gray matter (PAG). Moreover, whereas the KCN-evoked escape is potentiated by CO2, it is suppressed by both lesions of PAG and clinically-effective treatments with panicolytics. These and other data su...
Article
Full-text available
Objective:: To assess the interaction of chronotype with anxiety in patients with chronic primary insomnia. Methods:: Sixty-four patients (50 women) with mean age 43.9±8.1 years were investigated with the Horne and Östberg Morningness-Eveningness Questionnaire (MEQ) and State-Trait Anxiety Inventory (STAI). Results:: Significant negative corre...
Article
Objectives: Sleep is essential for physical and mental well-being. However, poor sleep is a common complaint among caregivers. The aim of the present study was to determine sleep patterns of caregiver-mothers (CM group) of sons with Duchenne muscular dystrophy (DMD) and also to examine the differences between non-carriers and carriers of the gene...
Article
Full-text available
Background Paradoxical sleep deprivation activates the sympathetic nervous system and the hypothalamus-pituitary-adrenal axis, subsequently interfering with the cardiovascular system. The beneficial effects of resistance training are related to hemodynamic, metabolic and hormonal homeostasis. We hypothesized that resistance training can prevent the...
Article
Full-text available
Introduction: Exercise performed at the hypoxia equivalent of an altitude of 4200 m is associated with elevated inflammatory mediators and changes in the Th1/Th2 response. By contrast, supplementation with carbohydrates has an anti-inflammatory effect when exercise is performed under normoxic conditions. The objective of this study was to evaluate...
Article
Full-text available
Obstructive sleep apnea (OSA) is characterized by episodes of pharyngeal collapse during sleep. Craniofacial alterations such as retrognathia are often found in OSA patients. Maxillomandibular advancement (MMA) surgeries increase the pharyngeal space and are a treatment option for OSA. The aim of this study was to present a successful case of MMA s...
Article
Full-text available
Aging is associated with an increase in the prevalence of obstructive sleep apnea syndrome (OSAS) as well as the shortening of telomeres. It is known that OSAS-related factors are stimuli that can contribute to the acceleration of cellular senescence. Thus, the present study aimed to compare the leukocyte telomere length (LTL) between OSAS patients...
Article
Full-text available
OBJECTIVES: Considering that changes in the maternal environment may result in changes in progeny, the aim of this study was to investigate the influence of sleep restriction during the last week of pregnancy on renal function and autonomic responses in male descendants at an adult age. METHODS: After confirmation of pregnancy, female Wistar rats...
Article
Increased anxiety levels have been widely recognized as one of the most important consequences of sleep deprivation. However, despite this general consensus, there are still aspects of this relationship, such as the extent of the anxiogenic potential and the specific effects of different types of sleep deprivation, which remain unclear. As no broad...
Article
Full-text available
The influence of sleep restriction (SR) during pregnancy on blood pressure and renal function among female adult offspring was investigated. Pregnant Wistar rats were distributed into control and SR groups. The SR was performed between the 14th and 20th days of pregnancy (multiple platforms method for 20 h/day). At 2 months of age, half of the offs...