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Junior MSC, Bezerra AG, Curado DF, Gregório RP, Galduróz JCF. Preliminary investigation of the administration of biperiden to reduce relapses in individuals with cocaine/crack user disorder: A randomized controlled clinical trial. Pharmacol Biochem Behav 2024; 237:173725. [PMID: 38340989 DOI: 10.1016/j.pbb.2024.173725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 01/17/2024] [Accepted: 02/05/2024] [Indexed: 02/12/2024]
Abstract
BACKGROUND Several studies have demonstrated that ACh modulates the dopaminergic circuit in the nucleus accumbens, and its blockade appears to be associated with the inhibition of the reinforced effect or the increase in dopamine caused by cocaine use. The objective of this study was to evaluate the effect of biperiden (a muscarinic receptor antagonist with a relatively higher affinity for the M1 receptor) on crack/cocaine use relapse compared to a control group that received placebo. METHODS This study is a double-blind, randomized, placebo-controlled clinical trial. The intervention group received 2 mg of biperiden, 3 times a day, for a period of 3 months. The control group received identical placebo capsules, at the same frequency and over the same period. All participants were followed for a period of six months. RESULTS The sample comprised 128 people, with 61 in the control group and 67 in the biperiden group. Lower substance consumption was observed in the group that received biperiden treatment two (bT2 = -2.2 [-3.3; -1.0], p < 0.001) and six months (bT4 = -6, 2 [-8.6; -3.9], p < 0.001) after the beginning of the intervention. The biperiden group had a higher latency until a possible first day of consumption, in the same evaluation periods (bT2 = 0.26 [0.080; 0.44], p = 0.004; bT4 = 0.63 [0.32; 0.93], p < 0.001). CONCLUSIONS Despite the major limitations of the present study, the group that received biperiden reduced the number of days of cocaine/crack use and showed an increase in the latency time for relapse. More studies are needed to confirm the utility of this approach.
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Bezerra AG, Pires GN, Andersen ML, Tufik S, Hachul H. The Effects of Hormonal Contraceptives on the Sleep of Women of Reproductive Age. Sleep Med Clin 2023; 18:435-448. [PMID: 38501516 DOI: 10.1016/j.jsmc.2023.06.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/20/2024]
Abstract
Research about the effects of hormonal contraceptives on sleep has been performed but is subjected to important levels of methodological heterogeneity. Hormonal contraceptives impact sleep, but the direction of this association is not clear. Most studies describe a negative sleep profile among contraceptive users, including increased sleepiness, insomnia symptoms, decreased sleep efficiency, and a reduced overall sleep quality. Hormonal intrauterine contraceptives are associated with less negative effects. More research on the field, especially randomized controlled trials, is needed to increase the level and certainty of evidence about the effects of hormonal contraceptives on sleep.
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Affiliation(s)
- Andréia Gomes Bezerra
- Departamento de Psicobiologia, Universidade Federal de São Paulo, Rua Napoleão de Barros, 925 - CEP: 04024-002, São Paulo, Brazil
| | - Gabriel Natan Pires
- Departamento de Psicobiologia, Universidade Federal de São Paulo, Rua Napoleão de Barros, 925 - CEP: 04024-002, São Paulo, Brazil; Sleep Institute, Rua Marselhesa, 500 - CEP: 04020-060, São Paulo, Brazil
| | - Monica L Andersen
- Departamento de Psicobiologia, Universidade Federal de São Paulo, Rua Napoleão de Barros, 925 - CEP: 04024-002, São Paulo, Brazil; Sleep Institute, Rua Marselhesa, 500 - CEP: 04020-060, São Paulo, Brazil
| | - Sergio Tufik
- Departamento de Psicobiologia, Universidade Federal de São Paulo, Rua Napoleão de Barros, 925 - CEP: 04024-002, São Paulo, Brazil; Sleep Institute, Rua Marselhesa, 500 - CEP: 04020-060, São Paulo, Brazil
| | - Helena Hachul
- Departamento de Psicobiologia, Universidade Federal de São Paulo, Rua Napoleão de Barros, 925 - CEP: 04024-002, São Paulo, Brazil; Sleep Institute, Rua Marselhesa, 500 - CEP: 04020-060, São Paulo, Brazil.
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Tufik SB, Pires GN, Porcacchia AS, Bezerra AG, Andersen ML, Tufik S. Impact of the early months of the COVID-19 pandemic on the sleep patterns of a Brazilian population sample. Chronobiol Int 2023; 40:1133-1145. [PMID: 37700530 DOI: 10.1080/07420528.2023.2255667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 08/24/2023] [Accepted: 08/31/2023] [Indexed: 09/14/2023]
Abstract
Humanitarian and health crisis have drastic effects on the physical and mental well-being of people. The COVID-19 pandemic forced many countries to impose containment measures on its population to halt the spread of the new coronavirus (SARS-CoV-2). This aim of this study was to explore self-reported sleep quality and insomnia symptoms in a sample of the Brazilian population before and during the COVID-19 quarantine period. Our data was collected through online questionnaires, including the Pittsburgh Sleep Quality Index, the Insomnia Severity Index, and the Sleep Hygiene Index. The final sample comprised 1,109 volunteers. Generalized estimating equations (GEE) revealed that during the initial months of the COVID-19 pandemic, alterations in self-reported sleep parameters were observed in the participants. Sleep efficiency and sleep duration increased, but there was a worsening in sleep quality and an increase in symptoms related to insomnia.
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Affiliation(s)
| | - Gabriel Natan Pires
- Instituto do Sono, São Paulo, Brazil
- Departamento de Psicobiologia, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Allan Saj Porcacchia
- Departamento de Psicobiologia, Universidade Federal de São Paulo, São Paulo, Brazil
| | | | - Monica Levy Andersen
- Instituto do Sono, São Paulo, Brazil
- Departamento de Psicobiologia, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Sergio Tufik
- Instituto do Sono, São Paulo, Brazil
- Departamento de Psicobiologia, Universidade Federal de São Paulo, São Paulo, Brazil
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Bezerra AG, Andersen ML, Pires GN, Tufik S, Hachul H. The effects of hormonal contraceptive use on sleep in women: A systematic review and meta-analysis. J Sleep Res 2023; 32:e13757. [PMID: 36319606 DOI: 10.1111/jsr.13757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Revised: 09/11/2022] [Accepted: 09/27/2022] [Indexed: 05/10/2023]
Abstract
Hormonal contraceptives are some of the most widely used medications worldwide, but studies on their effects on sleep are contradictory, with some reporting a sleep-promoting effect, while others a sleep-inhibiting effect. Our objective was, therefore, to undertake a systematic review and meta-analysis of the literature on this subject to try to clarify their effects. A search was conducted in three databases (PubMed, Scopus and Web of Science). Only studies evaluating hormonal contraception use were considered eligible, and both objective and subjective sleep-related outcomes were considered. Individual effect size was calculated for each article, and meta-analyses were performed using a DerSimonian and Laird random effects method. The initial search identified 2076 articles, of which 13 met the criteria for the study after full text evaluation. A total of 33 meta-analyses were performed, three of them related to subjective measures and 30 considering data from polysomnography. The only statistically significant result between contraceptive users and non-contraceptive users was observed in respect of wake after sleep onset, which was 7 min shorter among contraceptive users (-7.12 [-12.80; -1.44]; I2 = 65%; p = 0.01). In conclusion, hormonal contraceptives are not associated with clinically relevant changes in sleep patterns in women.
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Affiliation(s)
| | - Monica Levy Andersen
- Departamento de Psicobiologia, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Gabriel Natan Pires
- Departamento de Psicobiologia, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Sergio Tufik
- Departamento de Psicobiologia, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Helena Hachul
- Departamento de Psicobiologia, Universidade Federal de São Paulo, São Paulo, Brazil
- Departamento de Ginecologia, Casa de Saúde Hospital Santa Marcelina, São Paulo, Brazil
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Chagas C, Martins LB, Bezerra AG, Paula TCSD, Xavier ACA, Zangari W, Galduróz JCF. A Systematic Review on Alcohol Consumption among Non-Religious and Religious Adults. Subst Use Misuse 2023; 58:238-256. [PMID: 36510842 DOI: 10.1080/10826084.2022.2155477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Background: Research has suggested that religiosity is a protective factor in alcohol use, but this is an area that could be further explored. Objective: To undertake a systematic review of the literature on drinking patterns and their relationship with religiosity and non-religiosity in adult populations. Methods: We searched for relevant studies using the PubMed, LILACS, Web of Science, Scopus, and Psych-INFO databases. This review included only studies of people aged 18 and over which had a non-religious group as a comparison measure. Results: Fifty-one studies met the inclusion criteria. The present review showed that religious people tend to have lower alcohol consumption compared to those with no religion. However, this difference appears only when religions are analyzed together without differentiating between religious affiliations (Catholicism, Buddhism, Evangelicalism, etc.). Some religious affiliations, such as Buddhism, Catholicism and Lutheranism, appear to be risk factors for alcohol consumption. Definitions of risk consumption showed high heterogeneity, ranging from eight to 21 or more doses per week, a difference of 13 doses of alcohol between studies. Conclusions: The present review showed that religious people tend to have lower alcohol consumption compared to non-religious people. However, the results are contradictory when religious affiliations are analyzed separately and compared with non-religious participants. Adequately understanding which dimensions of religiosity and non-religiosity (e.g., group processes, engagement, meaning, rules of behavior) are protective in adulthood is fundamental to the construction of more effective interventions in this age group.
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Affiliation(s)
- Camila Chagas
- Department of Psychobiology, Universidade Federal de São Paulo - UNIFESP, São Paulo, Brazil
| | | | - Andréia Gomes Bezerra
- Department of Psychobiology, Universidade Federal de São Paulo - UNIFESP, São Paulo, Brazil
| | | | | | - Wellington Zangari
- Department of Social Psychology, Universidade de São Paulo - USP, São Paulo, Brazil
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Pauluci R, Noto AR, Curado DF, Siqueira-Campos M, Bezerra AG, Galduróz JCF. Omega-3 for the Prevention of Alcohol Use Disorder Relapse: A Placebo-Controlled, Randomized Clinical Trial. Front Psychiatry 2022; 13:826448. [PMID: 35463514 PMCID: PMC9026182 DOI: 10.3389/fpsyt.2022.826448] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 03/02/2022] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Recent studies have sought to identify the possible benefits of the intake of omega-3, an important component of neuronal membranes, for the treatment of alcohol use disorder. AIM The objective of the present study was to evaluate whether omega-3 supplementation is protective against alcohol use disorder relapse after hospital discharge. METHODS A randomized, double-blind, placebo-controlled study was carried out with severe alcohol dependence. Male inpatients were randomized to treatment with omega-3 (n = 59) or placebo (n = 52) for 3 months, participants were assessed after discharge at 1 month (T1), 2 months (T2), 3 months (T3), and 6 months (T4) with assessments made using self-report instruments. The primary outcomes were the possible reduction with assessments made using self-report instruments. The primary outcomes were the possible reduction in the number, intensity of relapses, amount of consumption in each relapse and number of days of consumption during relapses; as secondary outcomes were assessed symptoms of anxiety, depression, degree of dependence, compulsion, and craving. RESULTS The groups were similar regarding consumption amount parameters and propensity to relapse; however, an effect of treatment with omega-3 was found on the number of days of drinking at 2 months [B = 0.65 (0.09; 1, 21), p = 0.01] and 3 months [B = 2.6 (1.61; 3.58), p < 0.001] after discharge, favoring the intervention group. The effect was not maintained at follow up of 6 months. No differences were found in psychiatric symptoms and severity of addiction. CONCLUSION Despite the major limitations of the present study, the group that received omega-3 had a lower number of days of consumption of standard doses of alcohol in the evaluations of 60 and 90 days after discharge. More robust studies are needed to confirm or refute these findings. Brazilian Registry of Clinical Trials: n° RBR-48mkgz7 (URL: https://ensaiosclinicos.gov.br/rg/RBR-48mkgz7).
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Affiliation(s)
- Renata Pauluci
- Departamento de Psicobiologia, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Ana Regina Noto
- Departamento de Psicobiologia, Universidade Federal de São Paulo, São Paulo, Brazil
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Hachul H, Castro LS, Bezerra AG, Pires GN, Poyares D, Andersen ML, Bittencourt LR, Tufik S. Hot flashes, insomnia, and the reproductive stages: a cross-sectional observation of women from the EPISONO study. J Clin Sleep Med 2021; 17:2257-2267. [PMID: 34170233 DOI: 10.5664/jcsm.9432] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
STUDY OBJECTIVES To investigate the association of hot flashes and insomnia in women in premenopause and postmenopause. METHODS The study was performed using data from the São Paulo Epidemiological Sleep Study. Women in premenopause were classified as having regular menstrual cycles, being anovulatory, or using hormonal contraceptives. Women in menopause were classified as being in perimenopause, early postmenopause, or late postmenopause. Women reporting frequent insomnia symptoms and relevant daytime complaints were classified as having insomnia disorder. Polysomnography alterations suggestive of insomnia were also identified. RESULTS The frequency of hot flashes was 42% among women in postmenopause (mainly in early postmenopause) and 9% among women in premenopause (mainly anovulatory; P < .01). Approximately 18.7% had insomnia disorder, 48% had isolated insomnia symptoms, and 32.4% had polysomnography alterations. Comparing women in menopause with those in premenopause, the diagnosis of insomnia was similar (premenopause: 18.9% vs menopause: 17.5%), but women in menopause had more frequent isolated insomnia symptoms (premenopause: 43.9% vs menopause: 55.9%; P = .02) and polysomnography correlates of insomnia (premenopause: 26.5% vs menopause: 42.6%; P < .01). Hot flashes were more frequent among women with insomnia disorders (25.5%) and with isolated insomnia symptoms (23.0%) when compared with good sleepers (12.6%) in the entire sample (P = .01). Among women in late menopause, the prevalence of hot flashes was higher in both women with insomnia disorders (42.1%) and with isolated insomnia symptoms (37.5%) when compared with women who were good sleepers (14.3%; P = .05). CONCLUSIONS Hot flashes are associated with insomnia and polysomnography alterations suggestive of insomnia. The prevalence of hot flashes among women with insomnia disorder is especially high among women in late postmenopause. CITATION Hachul H, Castro LS, Bezerra AG, et al. Hot flashes, insomnia, and the reproductive stages: a cross-sectional observation of women from the EPISONO study. J Clin Sleep Med. 2021;17(11):2257-2267.
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Affiliation(s)
- Helena Hachul
- Departamento de Psicobiologia, Universidade Federal de São Paulo, São Paulo, Brazil.,Departamento de Ginecologia, Universidade Federal de São Paulo, São Paulo, Brazil
| | | | | | - Gabriel Natan Pires
- Departamento de Psicobiologia, Universidade Federal de São Paulo, São Paulo, Brazil.,Department of Physiological Sciences, Santa Casa de São Paulo School of Medical Sciences, São Paulo, Brazil
| | - Dalva Poyares
- Departamento de Psicobiologia, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Monica Levy Andersen
- Departamento de Psicobiologia, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Lia Rita Bittencourt
- Departamento de Psicobiologia, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Sergio Tufik
- Departamento de Psicobiologia, Universidade Federal de São Paulo, São Paulo, Brazil
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Adinolfi AC, Bezerra AG, Curado DF, de Souza AAL, Galduróz JCF. Drug Use Frequency Variation and Mental Health During the COVID-19 Pandemic: an Online Survey. Int J Ment Health Addict 2021; 20:2755-2769. [PMID: 34483783 PMCID: PMC8404543 DOI: 10.1007/s11469-021-00546-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 05/17/2021] [Indexed: 11/25/2022] Open
Abstract
In December 2019, a new disease caused by a coronavirus was first identified in China and quickly spread across the world, causing a large number of deaths. Quarantine has been implemented in many countries as a measure to prevent the spread of the disease. The impact of this situation on drug use and mental health is still poorly understood. Therefore, this cross-sectional study sought to assess possible associations between quarantine, the use of psychoactive substances, and symptoms of depression and anxiety. The assessment instruments used were the Patient Health Questionnaire-9 (PHQ-9); the General Anxiety Disorder-7 (GAD-7) scale; and an adaptation of the Alcohol, Smoking and Substance Involvement Screening Test (ASSIST). The sample consisted of 2398 participants who met the following inclusion criteria: being in quarantine, aged 18 years or older, and living in Brazil. There was a decrease in the frequency of use of practically all drugs investigated in the evaluated sample. However, some factors were associated with less variations in the frequency of substance use before and during quarantine. These factors were being male, single, and having an occupation different from homemaker.
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Affiliation(s)
- Ana Carolina Adinolfi
- Departamento de Psicobiologia, Universidade Federal de São Paulo, Rua Napoleão de Barros, 925 CEP, São Paulo, SP 04024-002 Brazil
| | - Andréia Gomes Bezerra
- Departamento de Psicobiologia, Universidade Federal de São Paulo, Rua Napoleão de Barros, 925 CEP, São Paulo, SP 04024-002 Brazil
| | - Daniela Fernández Curado
- Departamento de Psicobiologia, Universidade Federal de São Paulo, Rua Napoleão de Barros, 925 CEP, São Paulo, SP 04024-002 Brazil
| | - Altay Alves Lino de Souza
- Departamento de Psicobiologia, Universidade Federal de São Paulo, Rua Napoleão de Barros, 925 CEP, São Paulo, SP 04024-002 Brazil
| | - José Carlos Fernandes Galduróz
- Departamento de Psicobiologia, Universidade Federal de São Paulo, Rua Napoleão de Barros, 925 CEP, São Paulo, SP 04024-002 Brazil
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Pires GN, Bezerra AG, Oliveira TBD, Chen SFI, Malfatti VDA, Mello VFFD, Niyama A, Pinto VLS, Andersen ML, Tufik S. COVID-19 meta-analyses: a scoping review and quality assessment. Einstein (Sao Paulo) 2021; 19:eAO6002. [PMID: 33729287 PMCID: PMC7942841 DOI: 10.31744/einstein_journal/2021ao6002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Accepted: 10/30/2020] [Indexed: 01/08/2023] Open
Abstract
OBJECTIVE To carry out a scoping review of the meta-analyses published regarding about coronavirus disease 2019 (COVID-19), evaluating their main characteristics, publication trends and methodological quality. METHODS A bibliometric search was performed in PubMed®, Scopus and Web of Science, focusing on meta-analyses about COVID-2019 disease. Bibliometric and descriptive data for the included articles were extracted and the methodological quality of the included meta-analyses was evaluated using A Measurement Tool to Assess Systematic Reviews. RESULTS A total of 348 meta-analyses were considered eligible. The first meta-analysis about COVID-19 disease was published on February 26, 2020, and the number of meta-analyses has grown rapidly since then. Most of them were published in infectious disease and virology journals. The greatest number come from China, followed by the United States, Italy and the United Kingdom. On average, these meta-analyses included 23 studies and 15,200 participants. Overall quality was remarkably low, and only 8.9% of them could be considered as of high confidence level. CONCLUSION Although well-designed meta-analyses about COVID-19 disease have already been published, the majority are of low quality. Thus, all stakeholders playing a role in COVID-19 deseases, including policy makers, researchers, publishers and journals, should prioritize well-designed meta-analyses, performed only when the background information seem suitable, and discouraging those of low quality or that use suboptimal methods.
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Affiliation(s)
| | | | | | - Samuel Fen I Chen
- Faculdade de Ciências Médicas da Santa Casa de São Paulo, São Paulo, SP, Brazil
| | | | | | - Alyne Niyama
- Faculdade de Ciências Médicas da Santa Casa de São Paulo, São Paulo, SP, Brazil
| | | | | | - Sergio Tufik
- Universidade Federal de São Paulo, São Paulo, SP, Brazil
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Palombo P, Engi SA, Yokoyama TS, Bezerra AG, Curado DF, Anésio A, Leão RM, Santos PCJDL, Cruz FC, Galduróz JCF. Effects of biperiden (cholinergic muscarinic m1/m4 receptor antagonist) on ethanol conditioned place preference in mice. Neurosci Lett 2020; 745:135551. [PMID: 33346074 DOI: 10.1016/j.neulet.2020.135551] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Revised: 12/01/2020] [Accepted: 12/04/2020] [Indexed: 10/22/2022]
Abstract
BACKGROUND Previous studies suggest that muscarinic cholinergic receptors might act upon the dopamine release in the mesolimbic system and alter drug-reinforcing values related to drug craving. AIMS We examined the effects of systemic biperiden administration, a muscarinic cholinergic (M1/M4) receptor antagonist, on ethanol (dose of 2 g/Kg) conditioned place preference (CPP), neuronal activation, dopamine and its metabolites levels in the nucleus accumbens. METHODS Thirty minutes before the ethanol-induced CPP test, mice received saline or biperiden at doses of 1.0, 5.0, or 10.0 mg/kg. The time spent in each compartment was recorded for 15 min. After the CPP protocol, animals were euthanized, and we investigated the activation of the nucleus accumbens by immunohistochemistry for Fos. We also quantified dopamine, homovanillic acid (HVA), and dihydroxyphenylacetic acid (DOPAC) levels in the nucleus accumbens by high-performance liquid chromatography (HPLC). Additionally, the rotarod was employed to evaluate the effects of biperiden on motor coordination. RESULTS Biperiden at different doses (1.0, 5.0, and 10.0 mg/kg) blocked the expression of ethanol-induced CPP. These biperiden doses increased the number of Fos-positive cells and the dopamine turnover in the nucleus accumbens. None of the doses affected the motor coordination evaluated by the rotarod. CONCLUSIONS Our results show that biperiden can modulate the effect of alcohol reward, and its mechanism of action may involve a change in dopamine and cholinergic mesolimbic neurotransmission.
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Affiliation(s)
- Paola Palombo
- Departamento de Farmacologia, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Sheila Antonagi Engi
- Departamento de Farmacologia, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Thais Suemi Yokoyama
- Departamento de Farmacologia, Universidade Federal de São Paulo, São Paulo, Brazil
| | | | | | - Augusto Anésio
- Departamento de Farmacologia, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Rodrigo Molini Leão
- Laboratório de Farmacologia, Departamento de Farmacologia, Instituto de Ciências Biomédicas, Universidade Federal de Uberlândia - UFU, Uberlândia, Brazil
| | | | - Fábio Cardoso Cruz
- Departamento de Farmacologia, Universidade Federal de São Paulo, São Paulo, Brazil.
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Bezerra AG, Pires G, Andersen ML, Tufik S, Hachul H. 0830 Hormonal Contraceptive Use and Sleep: A Systematic Review and Meta-Analysis. Sleep 2020. [DOI: 10.1093/sleep/zsaa056.826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Introduction
The effects of hormonal contraceptives on sleep has been matter of debate in current literature. While some articles observed a sleep promoting effect and reduced sleep disordered breathing, others have failed to detect any result or even detected a worse sleep pattern in women using hormonal contraception. As the literature has been growing on this field, a systematic review is necessary to gather and compare all the studies in a comprehensive way.
Methods
A bibliographic search was conducted in Pubmed, Scopus and Web of Science. Studies were selected first based on titles and abstracts, followed by full text analysis and data extraction. Only original studies evaluating women using hormonal contraception were considered eligible. Both objective and subjective sleep-related outcomes were extracted for analyzes. Individual effect size for each articles was calculated using regular or standardized mean differences and meta-analyses were conducted using a DerSimonian and Laird random effects model.
Results
After the bibliographic search, 1787 non-duplicated articles were included in our initial data screening. Articles sample was reduced to 114 records after abstract screening and to ten studies after full text analyses. The following sleep outcomes were eligible for meta-analysis: Pittsburgh Sleep Quality Index (PSQI - 3 studies), total time in bed (4), subjective total sleep time (4), objective total sleep time (3), sleep latency (6), sleep efficiency (6). None of them resulted in statistically significant effects of contraceptive use and the effect size ± 95% interval of confidence overlapped the zero value.
Conclusion
Hormonal contraceptives is not associated to any alteration in sleep patterns in women. This conclusion should be restricted to a general framework, since our sample does not allowed stratified analyses. Future studies should consider the effect of specific hormonal composition (ex.: combined vs. progestogen-only contraceptives) and administration route (contraceptive pills vs. levonorgestrel intrauterine device).
Support
AFIP, CAPES, CNPq
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Affiliation(s)
- A G Bezerra
- Universidade Federal de São Paulo, São Paulo, BRAZIL
| | - G Pires
- Universidade Federal de São Paulo, São Paulo, BRAZIL
- Santa Casa de São Paulo School of Medical Sciences, Sao Paulo, BRAZIL
| | - M L Andersen
- Universidade Federal de São Paulo, São Paulo, BRAZIL
| | - S Tufik
- Universidade Federal de São Paulo, São Paulo, BRAZIL
| | - H Hachul
- Universidade Federal de São Paulo, São Paulo, BRAZIL
- Casa de Saúde Hospital Santa Marcelina, Sao Paulo, BRAZIL
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Banzoli CV, Bezerra AG, D’Almeida V, Andersen ML, Tufik SV, Hachul HV. 1022 Association Between Homocysteine and Sleep in Postmenopausal Women. Sleep 2020. [DOI: 10.1093/sleep/zsaa056.1018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Introduction
Homocysteine (Hcy) is a sulfur amino acid, considered an independent risk factor for cardiovascular disease. Excessive Hcy directly harms the endothelium and can lead to premature atherosclerosis, with progression to stroke and acute myocardial infarction. One of the causes of hyperhomocysteinemia (Hhcy) is known to be hypoestrogenism. Hypoestrogenism increases the cardiovascular risk as well as the occurrence of sleep disorders. Hhcy prevalence varies by population and its value in postmenopausal women in Brazil is unknown. Objective: To evaluate the prevalence of hyperhomocysteinemia in postmenopausal women in the city of São Paulo. Check if there is an association between the variables: Hcy and lipid profile; Hcy and hot flushes; Hcy and subjective sleep parameters
Methods
A population-based cross-sectional study was conducted that included a total of 1,042 volunteers living in the city of São Paulo in 2007. This research is part of the São Paulo Sleep Epidemiological Study (EPISONO). Study approved by the Ethics Committee (CEP # 0593/06) and registered with ClinicalTrials.gov (NCT00596713). Hcy, total cholesterol, HDL, LDL, triglycerides were measured. Sleep questionnaires PSQI, IGI, Epworth Sleepiness Scale were used. The GLzM (Generalized Linear Model) was used to verify the association between the different variables. Dependent variables were used in binominal and gama distribution when needed
Results
The sample consisted of 193 postmenopausal women, with a mean age of 58 years (SD ± 9). The prevalence of Hhcy in this sample was 4.7%, while 14.7% had dyslipidemia 22.8% with hypertriglyceridemia and 29% with low HDL levels. There was an association between Hcy and HDL. There was no association between Hcy and hot flushes, Hcy and LDL, nor with Hcy and sleep parameters.
Conclusion
The studied population presented low prevalence of Hhcy and there was no association between Hcy and sleep parameters.
Support
This research was support by fellowships from Associação Fundo de Incentivo à Pesquisa (AFIP) and Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) - Finance Code 001.
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Affiliation(s)
- C V Banzoli
- Universidade Federal de São Paulo, SAO PAULO, BRAZIL
| | - A G Bezerra
- Universidade Federal de São Paulo, São Paulo, BRAZIL
| | - V D’Almeida
- Universidade Federal de São Paulo, São Paulo, BRAZIL
| | - M L Andersen
- Universidade Federal de São Paulo, São Paulo, BRAZIL
| | - S V Tufik
- Universidade Federal de São Paulo, São Paulo, BRAZIL
| | - H V Hachul
- Universidade Federal de São Paulo, São Paulo, BRAZIL
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Hachul H, Castro LS, Bezerra AG, Poyares D, Andersen ML, Bittencourt L, Tufik S. 0831 Hot Flashes and Insomnia Throughout the Life Span of Women from the Episono Cohort. Sleep 2020. [DOI: 10.1093/sleep/zsaa056.827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Introduction
Hormonal changes may trigger sleep disturbances in women. Insomnia affects one in every three-to-four of them, most likely during pre to post menopause, and especially in association with hot flashes. Thus, the present study aimed to investigate the occurrence of hot flashes among women with and without insomnia and on different reproductive stages.
Methods
Sampling procedure was a three-stage clustering of the population of Sao Paulo, Brazil according to gender, age (20-80 years), and socio-economic status. A total of 574 women were interviewed, underwent polysomnographic recording (PSG), and had fasting-blood samples collected. Hormone levels and a gynecological questionnaire were used to classify reproductive stages. Premenopausal women were classified either in the follicular, luteal, or periovulatory stage or as anovulatory or under hormonal contraceptives; whereas those menopausal were classified in perimenopause or in early or late stages. Individuals reporting frequent and persistent insomnia symptoms accompanied by relevant daytime impairment were classified with insomnia syndrome. Objective insomnia was defined by increased sleep onset latency and/or awake after sleep onset, decreasing sleep duration.
Results
The final sample included 550 women, representing 53% of the EPISONO cohort (n=1,042). Hot flashes were reported by 9% of the premenopausal women (n=339) and by 42% of the menopausal. Complaints were more frequent among women in perimenopause (67%) and those in use of hormonal therapy (60%), and it tended to decrease in later stages (33%); whereas before menopause, hot flashes were especially reported by anovulatory women (26%), while significantly less by those using contraceptives (6%). Hot flashes were associated with a 2-fold increase in insomnia symptoms and while it predicted objective sleep alterations among premenopausal women, they did not after menopause, when alterations in sleep were better explained by an effect of aging.
Conclusion
Our current findings suggest that hot flashes are associated with irregular menstrual cycles among premenopausal women, and particularly with early stages of menopause, predicting both subjective and objective sleep alterations.
Support
This research was supported by fellowships from Associação Fundo de Incentivo à Pesquisa (AFIP) and Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) - Finance Code 001.
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Affiliation(s)
- H Hachul
- Universidadede Federal de Sao Paulo - Department of Psychobiology, Sao Paulo, BRAZIL
| | - L S Castro
- Universidadede Federal de Sao Paulo - Department of Psychobiology, Sao Paulo, BRAZIL
| | - A G Bezerra
- Universidadede Federal de Sao Paulo - Department of Psychobiology, Sao Paulo, BRAZIL
| | - D Poyares
- Universidadede Federal de Sao Paulo - Department of Psychobiology, Sao Paulo, BRAZIL
| | - M L Andersen
- Universidadede Federal de Sao Paulo - Department of Psychobiology, Sao Paulo, BRAZIL
| | - L Bittencourt
- Universidadede Federal de Sao Paulo - Department of Psychobiology, Sao Paulo, BRAZIL
| | - S Tufik
- Universidadede Federal de Sao Paulo - Department of Psychobiology, Sao Paulo, BRAZIL
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Bezerra AG, Andersen ML, Pires GN, Banzoli CV, Polesel DN, Tufik S, Hachul H. Hormonal contraceptive use and subjective sleep reports in women: An online survey. J Sleep Res 2020; 29:e12983. [DOI: 10.1111/jsr.12983] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 12/16/2019] [Accepted: 01/05/2020] [Indexed: 11/28/2022]
Affiliation(s)
| | - Monica Levy Andersen
- Departamento de Psicobiologia Universidade Federal de São Paulo São Paulo Brazil
| | - Gabriel Natan Pires
- Departamento de Psicobiologia Universidade Federal de São Paulo São Paulo Brazil
- Department of Physiological Sciences Santa Casa de São Paulo School of Medical Sciences São Paulo Brazil
| | - Carolina V. Banzoli
- Departamento de Psicobiologia Universidade Federal de São Paulo São Paulo Brazil
- Departamento de Ginecologia Casa de Saúde Hospital Santa Marcelina São Paulo Brazil
| | | | - Sergio Tufik
- Departamento de Psicobiologia Universidade Federal de São Paulo São Paulo Brazil
| | - Helena Hachul
- Departamento de Psicobiologia Universidade Federal de São Paulo São Paulo Brazil
- Departamento de Ginecologia Casa de Saúde Hospital Santa Marcelina São Paulo Brazil
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Galduróz JCF, Bezerra AG, Pires GN, Pauluci R, Noto AR. OMEGA-3 Interventions in Alcohol Dependence and Related Outcomes: A Systematic Review and Propositions. Curr Neuropharmacol 2020; 18:456-462. [PMID: 31989899 PMCID: PMC7457439 DOI: 10.2174/1570159x18666200128120729] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Revised: 12/29/2019] [Accepted: 01/25/2020] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Pharmacological treatment for alcohol dependence has only three approved drugs: disulfiram, naltrexone and acamprosate. The effects of these drugs are, however, limited, presenting several side effects and a modestly higher efficacy compared to placebo. The administration of omega-3 might bring new perspectives to relapse prevention. METHODS This systematic review aimed to analyze the available literature, compiling the studies that used omega-3 to prevent relapse in alcohol dependents. RESULTS The databases used were PubMed and Web of Science. We identified 2,231 studies and only five articles addressed the administration of omega-3 and alcoholism. Preclinical studies evaluating the effects of PUFAs related to chronic alcohol administration showed improvements in behavioral, cellular and molecular levels. The clinical trial yielded inconclusive results. CONCLUSION Despite the reduced number of studies, omega-3 interventions seem to be promising for controlling issues related to alcohol dependence.
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Affiliation(s)
- José Carlos F. Galduróz
- Address correspondence to this author at the Departamento de Psicobiologia, Universidade Federal de São Paulo, São Paulo, Brazil;, Tel: +55 11 2149-0155; E-mail:
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Pires GN, Bezerra AG, de Vries RBM, Leenaars CHC, Ritskes-Hoitinga M, Tufik S, Andersen ML. Effects of experimental sleep deprivation on aggressive, sexual and maternal behaviour in animals: a systematic review protocol. BMJ Open Science 2018; 2:e000041. [PMID: 35047677 PMCID: PMC8749292 DOI: 10.1136/bmjos-2017-000041] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Accepted: 10/24/2018] [Indexed: 12/11/2022] Open
Abstract
Objective Because of the relevance for the research on sleep deprivation and human behaviour, many preclinical studies have been conducted on aggressive, sexual and maternal behaviours in this field. Considering the available data and the complexity of the factors involved, the most appropriate way to summarise the effects of sleep deprivation on these behaviours is through systematic reviews and meta-analyses. This article describes the protocol for three independent systematic reviews and meta-analyses, evaluating the effects of sleep deprivation on aggressive, sexual and maternal behaviours in animals. Search strategy A bibliographic search will be performed in four databases: Pubmed, Scopus, Web of Science and Psychinfo, searching for three domains: sleep deprivation (as the intervention), animals (as the population) and behaviour (as the outcome). Screening and annotation Titles and abstracts will first be screened, followed by analysis of the full text and data extraction. Data management and reporting SYstematic Review Centre for Laboratory Animal Experimentation ’s risk of bias tool will be used to evaluate risk of bias; visual analysis of funnel plots, Egger’s regression and trim-and-fill will be employed to evaluate publication bias. Effect sizes will be calculated from the articles by either direct or standardised mean difference, depending on the nature of the data. Overall estimates will then be calculated using a random effects model. Heterogeneity will be assessed using both I2 index and Cochran’s Q test. These meta-analyses should be useful to summarise the available data on the relationship between sleep deprivation and behaviour, providing a solid background for future behavioural sleep deprivation experiments, improving their validity.
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Affiliation(s)
- Gabriel Natan Pires
- Departamento de Psicobiologia, Universidade Federal de São Paulo, São Paulo, Brazil
- Department of Physiological Sciences, Santa Casa de São Paulo School of Medical Sciences, São Paulo, Brazil
| | | | - Rob B M de Vries
- SYstematic Review Centre for Laboratory Animal Experimentation (SYRCLE) at Central Animal Facility, Radboud University Medical Center, Nijmegen, The Netherlands
| | | | - Merel Ritskes-Hoitinga
- SYstematic Review Centre for Laboratory Animal Experimentation (SYRCLE) at Central Animal Facility, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Sergio Tufik
- Departamento de Psicobiologia, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Monica Levy Andersen
- Departamento de Psicobiologia, Universidade Federal de São Paulo, São Paulo, Brazil
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Frange C, Banzoli CV, Colombo AE, Siegler M, Coelho G, Bezerra AG, Csermak M, Naufel MF, Cesar-Netto C, Andersen ML, Girão MJBC, Tufik S, Hachul H. Women's Sleep Disorders: Integrative Care. ACTA ACUST UNITED AC 2017; 10:174-180. [PMID: 29410750 PMCID: PMC5760052 DOI: 10.5935/1984-0063.20170030] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The integrative care model is rooted in a biopsychosocial approach. Integrative
is a term which refers to increasing the harmony and coherence of your whole
being, and integrative care is therefore focused on the person, not on either
the disease or a therapy. It is provided collaboratively by a health team
comprising physicians, psychologists, physiotherapists, acupuncturists, and
meditation, nutrition, and floral therapy. Previous studies have demonstrated
that interventions based on the integrative care model improved womens lifestyle
and quality of life. Our aim was to describe the use of complementary and
alternative medicine (CAM) alongside traditional medicine among women with sleep
conditions in our Womens Sleep Disorders Integrative Treatment Outpatient
Clinic. We are sharing our experiences and clinical practice as the model we
developed seems to have both physical and psychological benefits for women with
sleep problems. We discuss the wide range of benefits that result from this type
of complex intervention, and the contextual factors that may influence these
benefits. This will inform future practitioners and we hope to contribute to
quantitative research in the clinical setting. The study highlights the
importance of treating sleep complaints with a caring relationship and a CAM
approach, alongside conventional medicine. Exploration of the lived experience
of CAM and its meaning enables healthcare professionals to gain insights into
the patients needs, preferences, and values. Gynecologists, clinicians, and
health care providers should support and guide patients in their decision to use
CAM by providing evidence-based and comprehensive advice on the potential
benefits, risks and related safety issues of this approach.
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Affiliation(s)
- Cristina Frange
- Universidade Federal de São Paulo, Departament Psychobiology - São Paulo - SP - Brazil
| | | | - Ana Elisa Colombo
- Universidade Federal de São Paulo, Department Gynecology - São Paulo - SP - Brazil
| | - Marcele Siegler
- Universidade Federal de São Paulo, Departament Psychobiology - São Paulo - SP - Brazil
| | - Glaury Coelho
- Universidade Federal de São Paulo, Departament Psychobiology - São Paulo - SP - Brazil
| | - Andréia Gomes Bezerra
- Universidade Federal de São Paulo, Departament Psychobiology - São Paulo - SP - Brazil
| | - Marcelo Csermak
- Universidade Federal de São Paulo, Departament Psychobiology - São Paulo - SP - Brazil
| | | | - Cristiana Cesar-Netto
- Universidade Federal de São Paulo, Departament Psychobiology - São Paulo - SP - Brazil
| | - Monica Levy Andersen
- Universidade Federal de São Paulo, Departament Psychobiology - São Paulo - SP - Brazil
| | | | - Sergio Tufik
- Universidade Federal de São Paulo, Departament Psychobiology - São Paulo - SP - Brazil
| | - Helena Hachul
- Universidade Federal de São Paulo, Departament Psychobiology - São Paulo - SP - Brazil.,Universidade Federal de São Paulo, Department Gynecology - São Paulo - SP - Brazil
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Pires GN, Bezerra AG, Tufik S, Andersen ML. Effects of experimental sleep deprivation on anxiety-like behavior in animal research: Systematic review and meta-analysis. Neurosci Biobehav Rev 2016; 68:575-589. [DOI: 10.1016/j.neubiorev.2016.06.028] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2016] [Revised: 06/18/2016] [Accepted: 06/20/2016] [Indexed: 01/15/2023]
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Bezerra AG, Negri G, Duarte-Almeida JM, Smaili SS, Carlini EA. PHYTOCHEMICAL ANALYSIS OF HYDROETHANOLIC EXTRACTS FROM POWDERED ROOTS OF Panax ginsengC. A. Meyer AND Heteropterys tomentosaA. Juss AND EVALUATION OF THEIR EFFECTS ON ASTROCYTE CELL DEATH. QUIM NOVA 2016. [DOI: 10.5935/0100-4042.20160069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Bezerra AG, Negri G, Duarte-Almeida JM, Smaili SS, Carlini EA. Phytochemical analysis of hydroethanolic extract of Turnera diffusa Willd and evaluation of its effects on astrocyte cell death. Einstein (Sao Paulo) 2016; 14:56-63. [PMID: 27074236 PMCID: PMC4872919 DOI: 10.1590/s1679-45082016ao3386] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2015] [Accepted: 01/13/2016] [Indexed: 02/08/2023] Open
Abstract
OBJECTIVE To evaluate the phytochemical composition of hydroethanolic extracts from powdered aerial parts of Turnera diffusa Willd (Turneraceae; T. diffusa), as well as its toxicity in astrocytes. METHODS Chemical analyses of hydroethanolic extract from powdered aerial parts ofT. diffusa were carried out using HPLC-DAD-ESI-MS/MS.In vitro assays using astrocytes culture were performed to evaluate cell death. RESULTS Flavone-C, O-diglycosides, such as, luteolin-8-C-[6-deoxy-2-O-rhamnosyl]-xylo-hexos-3-uloside, apigenin-8-C-[6-deoxy-2-O-rhamnosyl]-xylo-hexos-3-uloside and apigenin-7-O-6"-p-coumaroylglucoside were the main compounds found in this hydroethanolic extract. Concentration time-effect demonstrated the toxicity of this extract at a concentration of 1,000µg/mL in astrocyte culture, after 6 and 24 hours of incubation. CONCLUSION In phytochemical analyses, important antioxidants (mainly flavonoids) were observed. T. diffusa extracts presented cytotoxic effect in high concentrations, leading to increased cell death in astrocyte culture.
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Hachul H, Frange C, Bezerra AG, Hirotsu C, Pires GN, Andersen ML, Bittencourt L, Tufik S. The effect of menopause on objective sleep parameters: Data from an epidemiologic study in São Paulo, Brazil. Maturitas 2015; 80:170-8. [DOI: 10.1016/j.maturitas.2014.11.002] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2014] [Revised: 11/04/2014] [Accepted: 11/06/2014] [Indexed: 10/24/2022]
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Bezerra AG, Smaili SS, Lopes GS, Carlini EA. Effects of Panax ginseng, Turnera diffusa and Heteropterys tomentosa extracts on hippocampal apoptosis of aged rats. Einstein (Sao Paulo) 2014; 11:163-7. [PMID: 23843055 PMCID: PMC4872888 DOI: 10.1590/s1679-45082013000200005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2012] [Accepted: 04/02/2013] [Indexed: 11/21/2022] Open
Abstract
Objective: To verify if the medicinal plants Panax ginseng C.A. Mey, Turnera diffusa Willd. ex Schult., and Heteropterys tomentosa O. Mach., which are amply used by the population as tonics and cognition enhancers, could have a protective effect on cell death by apoptosis, since this could be one of the mechanisms of action of these substances. Methods: Aged male Wistar rats (n=24) were divided into four groups. Over 30 days, three groups received treatments with hydroalcoholic extracts of the plants, and one group received saline solution. A fifth group with young adult male Wistar rats (n=4) received saline solution during the same period. Using the TUNEL technique, the percentage of apoptosis in the hippocampus of these animals was evaluated. Results: No differences were observed between the percentage of apoptotic cells in the hippocampus of aged animals and of young control animals. The percentage of apoptosis in the hippocampus of aged animals treated chronically with the extracts from the three plants also did not differ from the percentage of apoptosis in the hippocampus of the control group of aged animals. Conclusion: Treatment with the hydroalcoholic extracts of Panax ginseng, Turnera diffusa, and Heteropterys tomentosa did not influence the apoptosis of the hippocampal cells of aged rats.
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Bezerra AG, Borissevitch IE, Gomes AS, de Araújo CB. Exploitation of the Z-scan technique as a method to optically probe pK(a) in organic materials: application to porphyrin derivatives. Opt Lett 2000; 25:323-325. [PMID: 18059868 DOI: 10.1364/ol.25.000323] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
We demonstrate the use of the Z-scan technique as a method to measure a chemical parameter, the pK(a) value, that characterizes the equilibrium constant in acid-base reactions. The measurements were performed with picosecond pulses at 532 nm in Fe(III)-meso-tetrakis(4-N-methyl-pyridyl) porphyrin. The results were compared with linear absorption measurements and electron paramagnetic resonance, the usual techniques employed to determine pK(a) values in aqueous solutions, and showed excellent agreement.
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