Papers by FLAVIA CAMPOS CORGOSINHO
Sleep Medicine, 2020
This is a PDF file of an article that has undergone enhancements after acceptance, such as the ad... more This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.
Nutrition Reviews, 2020
Optimal nutrition can improve well-being and might mitigate the risk and morbidity associated wit... more Optimal nutrition can improve well-being and might mitigate the risk and morbidity associated with coronavirus disease 2019 (COVID-19), caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). This review summarizes nutritional guidelines to support dietary counseling provided by dietitians and health-related professionals. The majority of documents encouraged the consumption of fruits, vegetables, and whole grain foods. Thirty-one percent of the guidelines highlighted the importance of minerals and vitamins such as zinc and vitamins C, A, and D to maintain a well-functioning immune system. Dietary supplementation has not been linked to COVID-19 prevention. However, supplementation with vitamins C and D, as well as with zinc and selenium, was highlighted as potentially beneficial for individuals with, or at risk of, respiratory viral infections or for those in whom nutrient deficiency is detected. There was no convincing evidence that food or food packaging is ass...
Sleep Medicine, 2019
(DSPS). They underwent two nights of polysomnography. The first night was used as an adaptation n... more (DSPS). They underwent two nights of polysomnography. The first night was used as an adaptation night. Sleep architecture variables from the second night were compared across participants with and without the dissociative subtype using analyses of variance controlling for sex. Results: Six participants (42%) met criteria for the dissociative subtype. Compared to the non-dissociative subgroup, the dissociative subgroup had significantly shorter total sleep time (F(1,11)¼7.2, p¼.021), longer sleep onset latency (F(1,11)¼6.6, p¼.026), poorer sleep efficiency (F(1,11)¼8.6, p¼.013), and a lower amount of NREM 2 sleep (F(1,11)¼9.6, p¼.010). There was no other significant group difference in sleep architecture. Across the entire sample, after controlling for sex, lower amount (r¼-.71, p¼.005) and percentage (r¼-68, p¼.007) of NREM 2 sleep correlated with worse depersonalization symptoms severity. Higher percentage of REM sleep also correlated with worse depersonalization symptoms severity (r¼.55, p¼.043). Conclusions: In this preliminary study, worse sleep abnormalities were observed in people with the dissociative PTSD subtype compared to those with non-dissociative PTSD. This included more difficulties falling asleep, more fragmented sleep, and shorter sleep durations. Furthermore, increased REM sleep at the expanse of NREM2 was linked to an increase in the severity of depersonalization. Since sleep deprivation may actively worsen dissociative symptoms, sleep abnormalities linked to PTSD could possibly play a role in the severity of dissociative symptoms, and in turn, engender greater distress.Further work is required to examine finer sleep features in larger samples of people with the dissociative PTSD subtype. This could highlight biological features supporting differences in PTSD subtypes, and enable the development of better tailored sleep interventions for people with PTSD.
Neuropeptides, Jan 2, 2017
Leptin is an adipokine released mainly by adipose tissue, with many functions including regulatio... more Leptin is an adipokine released mainly by adipose tissue, with many functions including regulation of energy balance. However, little is known about the effect of LEPR polymorphism on orexigenic and anorexigenic neuropeptides. Thus, the aim of the present study is to verify the influence of LEPR polymorphism (rs2767485) on serum orexigenic (NPY, MCH and AgRP) and anorexigenic (Leptin and α-MSH) neuropeptides levels among obese adolescents submitted to 1year of multicomponent weight loss therapy. Seventy-six adolescents with obesity were enrolled in 1year of weight loss therapy including clinical, nutritional, psychological and exercise-related. Blood samples were collected to analyze neuropeptides (NPY, MCH, AgRP and leptin) and LEPR genotyping. Visceral fat was measured by ultrasound and body composition was measured by plethysmography. The parameters were measured at baseline and after one year. Adolescents were grouped according to genotype (TT or CT+CC group). Effect of the weig...
Nutricion hospitalaria, 2015
Metabolic syndrome (MetS) is a constellation of metabolic alteration related to abdominal obesity... more Metabolic syndrome (MetS) is a constellation of metabolic alteration related to abdominal obesity, inflammation and insulin resistance, which increase cardiovascular disease and mortality. The aims of the present study were to identify the prevalence of comorbidities and altered parameters in obese adolescents with and without MetS, and determine cut-off points of waist circumference to predict MetS. 195 obese adolescents were recruited and divided according to MetS diagnosis based on IDF criteria. Blood analyses of glucose, lipids, liver enzymes, adiponectin and leptin were measured. Insulin resistance was assessed by HOMA-IR, QUICKI and HOMA-AD. Visceral, subcutaneous and hepatic fat were ultrasonography obtained. Body composition was estimated by BOD POD system. We observed a prevalence of 25% of MetS (n=50). The MetS group presented significant higher body mass, BMI, body fat (kg), free-fat mass (kg), waist circumference, visceral fat, glucose, insulin, insulin resistance, total...
Endocrine Regulations, 2015
Objectives. This study aimed to investigate the effect of vitamin D on cardiovascular risk in obe... more Objectives. This study aimed to investigate the effect of vitamin D on cardiovascular risk in obese adolescents.Methods. Thirty (16 females/14 males) post-puberty obese adolescents (15-19 years) were involved and measurements of inflammatory biomarkers, body composition, visceral fat, and vitamin D (serum and intake) were performed. The adolescents were submitted to a long-term interdisciplinary therapy with physical exercise, nutritional, psychological, and clinical interventions.Results. Negative correlations between vitamin D intake with plasminogen activator inhibitor-1 (PAI-1) (r=-0.69; p=0.01) and vascular cell adhesion molecule (VCAM-1) (r=-0.82; p=0.001) were found in the population analyzed. Improvement in PAI-1, VCAM-1, body composition, and visceral fat, were observed.Conclusions. We showed that low vitamin D intake is associated with an increase in the cardiovascular risk factors in obese adolescents. vitamin D, obesity, adolescent, cardiovascular risk.
Objectives: The aims of the present study were to verify whether sleep pattern could influence th... more Objectives: The aims of the present study were to verify whether sleep pattern could influence the food intake profile as well as to examine the impact of body composition on sleep pattern in obese adolescents. Methods: This is a cross-sectional study comprised of 55 post-puberty adolescents (15 to 19 years of age) with body mass indices greater than the 95 th percentile. The anthropometric variables analysed were waist circumference, body weight, height, body mass index and body composition. Nutritional data were obtained throughout a 3-day dietary record, and sleep parameters were recorded using a 7-day sleep diary. Statistical analyses were performed using multiple linear regressions with significance set at p < 0.05, and the effect size (r) was calculated for both models. Results: The models models of multiple linear regression analyses adjusted by gender revealed that body fat mass (kg) was an independent predictor of greater influence of sleep latency and the total sleep time on lipid intake. It was observed that a reduction in sleep time might contribute to the development and maintenance of obesity through an increase in fat intake. Furthermore, the data suggest that the total fat mass might be associated with higher sleep latency, contributing with a reduction in sleep duration, confirmed by an expressive effect size. Conclusion: The results indicate that an association between reduced sleep duration and irregular eating habits can promote a vicious cycle difficult obesity control in adolescents.
International Journal of Endocrinology, 2013
The prevention of obesity and health concerns related to body fat is a major challenge worldwide.... more The prevention of obesity and health concerns related to body fat is a major challenge worldwide. The aim of this study was to investigate the role of a medically supervised, multidisciplinary approach, on reduction in the prevalence of obesity related comorbidities, inflammatory profile, and neuroendocrine regulation of energy balance in a sample of obese adolescents. A total of 97 postpuberty obese adolescents were enrolled in this study. Body composition, neuropeptides, and adipokines were analysed. The metabolic syndrome was defined by the International Diabetes Federation (IDF). The abdominal ultrasonography was performed to measure visceral, subcutaneous fat and hepatic steatosis. All measures were performed at baseline and after one year of therapy. The multidisciplinary management promoted the control of obesity reducing body fat mass. The prevalence of metabolic syndrome, asthma, nonalcoholic fatty liver disease (NAFLD), binge eating, and hyperleptinemia was reduced. An imp...
Peptides, 2015
Several studies have sought to clarify the association between adolescent obesity and psychologic... more Several studies have sought to clarify the association between adolescent obesity and psychological distress. Recently, a biological link between leptin resistance and depression has been proposed. The aim of the present study was to examine changes in leptin concentrations as a potential predictor of reduced depression symptoms in obese adolescents during long-term interdisciplinary weight loss therapy. Seventy-five obese adolescents (age: 16.28±2.37 years; BMI: 35.65±4.64kg/m(2)) engaged in a long-term interdisciplinary therapy for weight loss. They were evaluated at baseline and after 1 year of treatment for body composition, serum analyses and depression symptomatology. After therapy, body mass BMI, fat mass (% and kg), waist circumference, visceral, subcutaneous and visceral/subcutaneous fat and depression symptoms decreased and lean mass (%) increased significantly. There was an improvement in inflammatory profiles with a significant reduction in leptin and increase in adiponectin. Regression analyses showed that decreased leptin predicted amelioration in depression symptoms independent of age, gender and changes in visceral fat, body mass, fat mass (%) and leptin/adiponectin ratio. These associations appear stronger in girls than boys. The attenuation of hyperleptinemia appears to play an important role in the association between weight loss and depression, particularly in obese girls.
Metabolic syndrome and related disorders, Jan 26, 2015
Obesity is considered a chronic subinflammatory disease and is a risk factor for many diseases su... more Obesity is considered a chronic subinflammatory disease and is a risk factor for many diseases such as sleep-disordered breathing (SDB). Although the interaction between obesity and sleep has been explored, not much is known about SDB in the adolescent population. Thus, the aims of this study were, first, to verify the effect of 1 year of interdisciplinary therapy on inflammatory markers in SDB and without SDB and, second, to investigate the influence of SDB on the result of the therapy by comparing these groups. A total of 36 obese adolescents were enrolled; however, only 24 completed the therapy (SDB group, n=12; non-SDB obese group, n=12). Sleep, anthropometric, metabolic, and inflammatory profiles were evaluated at baseline and after the treatment. In both groups, the therapy was able to improve all anthropometric variables. Metabolic parameters such as insulin, homeostasis model assessment (HOMA), and quantitative insulin sensitivity check index (QUICKI) were significantly impr...
Journal of Strength and Conditioning Research, 2014
Obesity is a worldwide epidemic with a high prevalence of comorbidities, including alterations in... more Obesity is a worldwide epidemic with a high prevalence of comorbidities, including alterations in bone mineral metabolism. The purpose of this yearlong study was to evaluate the role of 2 types of exercise training (aerobic and aerobic plus resistance exercise) on adipokines parameters and bone metabolism in adolescents who are obese. This was a clinical trial study with interdisciplinary weight loss therapy. Forty-two postpubertal adolescents who are obese were subjected to interdisciplinary weight loss therapy with physical exercise, medical monitoring, nutritional intervention, and psychological intervention. Data were collected from serum analyses of leptin, ghrelin, adiponectin, glucose, and insulin. Anthropometric measurements of body composition, bone mineral density, visceral, and subcutaneous fat were also performed. Statistical tests were applied using repeated-measures analysis of variance. Correlations were established using the Pearson test, and dependencies of variables were established using simple linear regression test. Both training types promoted reductions in body mass index, total central, visceral and subcutaneous fat, insulin concentration, and homeostasis model assessment insulin resistance (HOMA-IR) index, but only aerobic plus resistance training showed statistical improvements in the bone mineral content, adiponectin concentration, and lean tissue. Effective reduction in the visceral/subcutaneous ratio, central/peripheral ratio, and leptin concentration was observed. Insulin and the HOMA-IR index were negative predictors of bone mineral content in the combined training group. Moreover, fat distribution was a negative predictor for bone mineral density in both groups. Aerobic plus resistance training promotes a protective role in bone mineral content associated with an improvement in adiponectin and leptin concentrations, favoring the control of the inflammatory state related to obesity in adolescents. Aerobic plus resistance training combined with interdisciplinary interventions provides important strategies to approach obesity, and these strategies may contribute to clinical practice.
Journal of Pediatric Endocrinology and Metabolism, 2013
Obesity is a chronic inflammatory condition with numerous metabolic consequences to the organism,... more Obesity is a chronic inflammatory condition with numerous metabolic consequences to the organism, highlighting its influence on bone mass. Therefore, the aim of this study was to verify the role of visceral fat, leptin, adiponectin and ghrelin on bone mineral density in obese post-puberty adolescents girls, submitted to an interdisciplinary therapy. The study involved 20 post-puberty obese adolescent girls: 16 ± 1.5 years of age, 98.9 ± 15.8 kg (weight), 1.60 ± 0.72 m (height) and 37.2 ± 4.8 kg/m 2 [body mass index (BMI)]. Anthropometric measurements, body composition, visceral fat, subcutaneous fat, bone mineral density and content were determined. Ghrelin, leptin and adiponectin were analyzed and the leptin/adiponectin ratio was calculated. Our findings showed a significant increase in adiponectin concentration and a reduction in body weight, BMI, total fat mass, visceral and subcutaneous fat. In addition, ghrelin (r 2 =-0.53; p = 0.02) visceral fat (r 2 =-0.46, p = 0.04) (r 2-0.66, p = 0.001) and leptin/adiponectin ratio (r 2-0.56, p = 0.01) were negative predictors for bone mineral density and content in obese adolescent girls, respectively. It provides a novel physiologically concept that may shed light on the etiology of osteoporosis and help to identify new therapeutic targets. However this should be confirmed in a large cohort study.
Inflammation, 2013
The low-grade systemic inflammation seen in obesity may affect the actions of some adipose tissue... more The low-grade systemic inflammation seen in obesity may affect the actions of some adipose tissue-derived adipokines that are involved in the regulation of vascular function. We sought to verify whether hyperleptinemia may influence the inflammatory and atherogenic responses in obese adolescents undergoing interdisciplinary therapy. Thirty-four obese adolescents underwent interdisciplinary therapy for 1 year. Subjects were considered hyperleptinemic if they had baseline values of leptin above 20 ng/mL for boys and 24 ng/mL for girls. Both groups showed an improvement in body composition and a reduction in carotid intima-media thickness. However, only subjects in the non-hyperleptinemic group showed an increase in adiponectin concentration after therapy. Moreover, leptin concentration was positively correlated with adiponectin and inversely correlated with PAI-1 in this group. Hyperleptinemic state may impair the attenuation of inflammation in obese adolescents undergoing interdisciplinary therapy, particularly by impeding the increase in adiponectin concentration, which is directly involved in vascular protection.
Hormone and Metabolic Research, 2013
Hyperleptinemia has emerged as a marker of proinflammatory status, while the adiponectin/leptin r... more Hyperleptinemia has emerged as a marker of proinflammatory status, while the adiponectin/leptin ratio has been used to identify anti-inflammatory state. In this context, the aims of the present study were to investigate the role of leptinemia, adjusted by tertiles, on inflammatory state in obese adults according to obesity degree. This is a cross-sectional study comprised of 43 obese adults. The anthropometric variables and body composition were analyzed, as well as markers of inflammation such as leptin, adiponectin, and plasminogen activator inhibitor. Subjects were grouped using adjusted tertiles of the leptin levels. The major finding was the negative correlation between leptin concentration with adiponectin/leptin ratio (r=-0.622, p=0.000) and the positive correlation with leptin/adiponectin ratio (r=0.622, p=0.000). Indeed, both ratios were decreased and increased, respectively, according to the obesity degree. Furthermore, in the stepwise multiple linear regression analysis, the high degree of obesity was an independent predictor of leptinemia when adjusted for age and BMI (β=0.588, p=0.000 and β=0.778, p=0.005). Finally, the strong negatively correlation between the leptinemia with adiponectin/leptin ratio and the positive correlation with leptin/adiponectin ratio reinforce the role of this adipokine as a biomarker of inflammation in obese adults, according to obesity degree. Our findings can elucidate that hyperleptinemic status was a major factor in the proinflammatory status related to higher obesity degree. All together, these data reinforce the role of leptinemia state as a mediator of inflammation in obese adults.
European Journal of Gastroenterology & Hepatology, 2012
Conclusion The long-term interdisciplinary therapy with AT + RT protocol was more effective in si... more Conclusion The long-term interdisciplinary therapy with AT + RT protocol was more effective in significantly improving noninvasive biomarkers of NAFLD that are associated with the highest risk of disease progression in the pediatric population.
Endocrine, 2012
To investigate the role of pro-and antiinflammatory adipokines in the bone metabolism of nonalcoh... more To investigate the role of pro-and antiinflammatory adipokines in the bone metabolism of nonalcoholic fatty liver disease (NAFLD) obese adolescents as well as the effects of long-term interdisciplinary therapy on metabolic-related risk factors. Forty post-puberty obese adolescents were randomly assigned into two groups: (1) NAFLD group and (2) non-NAFLD group (diagnosis by ultrasonography) and submitted to a weight loss therapy. Body composition was analyzed by air displacement plethysmography, bone mineral density (BMD) and content by dual-energy X-ray absorptiometry, blood samples were collected to measure lipid profile, hepatic enzymes, and adipokines. Leptin and adiponectin concentrations were measured by ELISA. A decrease in total body mass, BMI, body fat, visceral and subcutaneous fat, insulin concentration, HOMA-IR, total cholesterol and an increase in lean body mass were observed in both groups after therapy. It was found positive correlation between the D BMD and the D fat mass (%) (r = 0.31, P = 0.01) and negative correlations between D BMC with D HOMA-IR (r =-0.34, P = 0.02) and D HOMA-IR with D leptin (r =-0.34, P = 0.02). In addition, increased levels of adiponectin and reduction in leptin concentrations were observed in NAFLD group. In the simple regression analysis, the HOMA-IR was an independent predictor changes in BMC in total obese adolescents and in the non-NAFLD group. One year of interdisciplinary weight loss therapy for obese adolescents with or without NAFLD, could regulate bone mineral metabolism as result of an increased BMC and improved inflammatory state.
Clinical Endocrinology, 2013
Obesity is a chronic disease defined by an excess amount of adipose tissue and presents a low-gra... more Obesity is a chronic disease defined by an excess amount of adipose tissue and presents a low-grade inflammatory state, increasing cardiovascular risk. To assess the effect of weight loss magnitude on the inflammatory profile and carotid intima-media thickness (cIMT) in obese adolescents engaged in interdisciplinary therapy. Seventy-seven postpubertal obese adolescents with a BMI greater than the 95th percentile (37·18 ± 5·14), of both genders and between the ages of 14 and 19 years (16·74 ± 1·59) were subjected to a 1-year period of interdisciplinary intervention (nutrition, psychology, physical exercise and clinical support). Blood samples were collected to analyse glucose, lipid and adipokine concentrations. Body composition, anthropometric profiles and cIMT were measured. The results are presented according to quartiles of weight loss: 1st (≤5·80 kg) = low; 2nd (5·80-10·90 kg) = low to moderate; 3rd (10·90-15·90 kg) = moderate; and 4th (&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;gt;15·90 kg) = massive. Leptin, the leptin/adiponectin ratio and plasminogen activator inhibitor 1 (PAI-1) were decreased significantly in the low-to-moderate weight loss. The cIMT was reduced in the moderate weight loss. Moreover, adiponectin was increased only in the massive weight loss. Additionally, weight loss was an independent predictor of changes in leptin level, the adiponectin/leptin ratio (A/L ratio) and PAI-1 when the data were adjusted for age and gender. BMI changes were predictors of changes in leptin and PAI-1 levels. A/L ratio was associated with lean body mass (%), independent of gender and age. In addition, changes in A/L ratio were independent predictors of cIMT alterations. Interdisciplinary therapy may reduce cardiovascular risk factors among adolescents depending on their degree of weight loss (moderate to massive) and when correlated with their inflammatory profile, metabolic state and cIMT.
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Papers by FLAVIA CAMPOS CORGOSINHO