Consulta: creatorFacets:"Pedrazzoli,M."
Registros recuperados: 5
Data/hora: 11/06/2024 00:44:33

Sleep disorder or simple sleep ontogeny? Tendency for morningness is associated with worse sleep quality in the elderly
Provedor de dados: 56
Autores: Barbosa,A.A.; Miguel,M.A.L.; Tufik,S.; Sabino,F.C.; Cendoroglo,M.S.; Pedrazzoli,M.
The objective of this study was to evaluate the alterations in sleep and circadian parameters during the aging process. The study sample comprises volunteers older than 18 up to 90 years of age that answered the Pittsburgh Sleep Quality Index (PSQI) and the Horne and Östberg circadian preference questionnaire. We observed that the shift to morningness with increasing age is associated with a significant worsening in sleep quality. We discuss that this sleep profile characterized by morningness and worse sleep quality observed in elderly, when compared to younger people, reflects not necessarily a pathological state, but an expected profile for this age group.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Elderly; Sleep quality; Circadian rhythmicity; Chronotype; Sleep ontogeny.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2016001000606

Chronotype ontogeny related to gender
Provedor de dados: 56
Autores: Duarte,L.L.; Menna-Barreto,L.; Miguel,M.A.L.; Louzada,F.; Araújo,J.; Alam,M.; Areas,R.; Pedrazzoli,M.
Chronotype is an established concept designed to identify distinct phase relationships between the expression of circadian rhythms and external synchronizers in humans. Although it has been widely accepted that chronotype is subjected to ontogenetic modulation, there is no consensus on the interaction between age and gender. This study aimed to determine the relationship between age- and gender-related changes in the morningness-eveningness character in a large sample of people. A total of 14,650 volunteers were asked to complete the Brazilian version of the Horne and Östberg chronotype questionnaire. The data demonstrated that, on average, women were more morning-oriented than men until the age of 30 and there were no significant differences between men...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chronotype; Gender; Ontogeny; Circadian rhythms; Sleep timing.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2014000400316

Do Caucasian and Asian clocks tick differently?
Provedor de dados: 56
Autores: Barbosa,A.A.; Pedrazzoli,M.; Koike,B.D.V.; Tufik,S.
The Period 3 and Clock genes are important components of the mammalian molecular circadian system. Studies have shown association between polymorphisms in these clock genes and circadian phenotypes in different populations. Nevertheless, differences in the pattern of allele frequency and genotyping distribution are systematically observed in studies with different ethnic groups. To investigate and compare the pattern of distribution in a sample of Asian and Caucasian populations living in Brazil, we evaluated two well-studied polymorphisms in the clock genes: a variable number of tandem repeats (VNTR) in PER3 and a single nucleotide polymorphism (SNP) in CLOCK. The aim of this investigation was to search for clues about human evolutionary processes related...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: PER3 gene; CLOCK gene; Circadian rhythms; Asian; Caucasian; Ethnic.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2010000100013

Influence of chronotype and social zeitgebers on sleep/wake patterns
Provedor de dados: 56
Autores: Korczak,A.L.; Martynhak,B.J.; Pedrazzoli,M.; Brito,A.F.; Louzada,F.M.
Inter-individual differences in the phase of the endogenous circadian rhythms have been established. Individuals with early circadian phase are called morning types; those with late circadian phase are evening types. The Horne and Östberg Morningness-Eveningness Questionnaire (MEQ) is the most frequently used to assess individual chronotype. The distribution of MEQ scores is likely to be biased by several fact, ors, such as gender, age, genetic background, latitude, and social habits. The objective of the present study was to determine the effect of different social synchronizers on the sleep/wake cycle of persons with different chronotypes. Volunteers were selected from a total of 1232 UFPR undergraduate students who completed the MEQ. Thirty-two subjects...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chronotype; Sleep/wake cycle; Morning types; Evening types; Circadian rhythm; Social zeitgebers.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2008001000014

Two pedigrees with restless legs syndrome in Brazil
Provedor de dados: 56
Autores: Esteves,A.M.; Pedrazzoli,M.; Bagnato,M.; Moreira,F.; Mello,M.T. de; Tufik,S.
Numerous studies have suggested a substantial genetic contribution in the etiology of the primary form of restless legs syndrome (RLS) and periodic leg movements (PLM). We describe the symptoms, the sleep profiles and physiological parameters of two families in which several members present RLS/PLM. The proband of family 1 is a 70-year-old woman and the proband of family 2 is a 57-year-old woman; both have exhibited the symptoms since the age of 20 years. All patients in both families were diagnosed with RLS according to the criteria of the International RLS Study Group. Polysomnographic recordings were performed to quantify and to describe PLM during sleep. Sleep parameters showed decreased sleep efficiency, increased sleep latency in the arousal index...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Restless legs syndrome; Periodic leg movements; Genetics; Sleep.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2008000200005