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This study investigated the effects of fish oil (FO) treatment, particularly enriched with eicosapentaenoic acid (EPA), on obesity induced by a high-fat diet (HFD) in mice. The investigation focused on elucidating the impact of FO on epigenetic modifications in white adipose tissue (WAT) and the involvement of adipose-derived stem cells (ASCs). C57BL/6j mice were divided into two groups: control diet and HFD for 16 weeks. In the last 8 weeks, the HFD group was subdivided into HFD and HFD + FO (treated with FO). WAT was removed for RNA and protein extraction, while ASCs were isolated, cultured, and treated with leptin. All samples were analyzed using functional genomics tools, including PCR-array, RT-PCR, and Western Blot assays. Mice receiving an HFD displayed increased body mass, fat accumulation, and altered gene expression associated with WAT inflammation and dysfunction. FO supplementation attenuated these effects, a potential protective role against HFD-induced obesity. Analysis of H3K27 revealed HFD-induced changes in histone, which were partially reversed by FO treatment. This study further explored leptin signaling in ASCs, suggesting a potential mechanism for ASC dysfunction in the obesity-rich leptin environment of WAT. Overall, FO supplementation demonstrated efficacy in mitigating HFD-induced obesity, influencing epigenetic and molecular pathways, and shedding light on the role of ASCs and leptin signaling in WAT dysfunction associated with obesity.
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Type 2 diabetes mellitus (T2DM) stands as a prevalent global public health issue caused by deficiencies in the action of insulin and/or insulin production. In the liver, insulin plays an important role by inhibiting hepatic glucose production and stimulating glycogen storage, thereby contributing to blood glucose regulation. Kaempferitrin (KP) and kaempferol (KM), flavonoids found in Bauhinia forficata, exhibit insulin-mimetic properties, showing promise in managing T2DM. In this study, we aimed to assess the potential of these compounds in modulating the insulin signaling pathway and/or glucose metabolism. Cell viability assays confirmed the non-cytotoxic nature of both compounds toward HepG2 cells at the concentrations and times evaluated. Theoretical molecular docking studies revealed that KM had the best docking pose with the IR ß subunit when compared to the KP. Moreover, Langmuir monolayer evaluation indicated molecular incorporation for both KM and KP. Specifically, KM exhibited the capability to increase AKT phosphorylation, a key kinase in insulin signaling, regardless of insulin receptor (IR) activation. Notably, KM showed an additional synergistic effect with insulin in activating AKT. In conclusion, our findings suggest the potential of KM as a promising compound for stimulating AKT activation, thereby influencing energy metabolism in T2DM.
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Technology-facilitated sexual abuse refers to the use of information and communication technologies to facilitate both virtual and in-person sexual crimes. Research on this topic has focused on rates, risk factors, and consequences. This scoping review aims to understand whether and how forensic psychological procedures are adapted to assess adolescent victims and how Internet-based information might be useful as complementary data. Following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses extensions for Scoping Reviews guidelines, searches were conducted in April 2023 in five electronic databases to include Portuguese, Spanish, or English quantitative, qualitative, or mixed-method peer-reviewed studies. Of the 2523 studies, six were considered eligible. Identified procedures include forensic interviews following the National Institute for Child Health and Human Development Protocol, and risk and trauma assessments. While discussing technology's role in abuse during interviews was informative, confronting adolescents with evidence of their abuse had adverse effects on their testimony and recovery. The assessment tools often had a narrow focus or overlooked the abuse unless explicitly disclosed, implied a referral, or when safeguarding concerns were raised. Clinical, forensic, and criminal implications are elaborated.
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Psicologia Forense , Delitos Sexuais , Humanos , Adolescente , Delitos Sexuais/psicologia , Vítimas de Crime/psicologia , Abuso Sexual na Infância/psicologia , Internet , TecnologiaRESUMO
This descriptive prospective study investigated the clinical features and treatment adherence of individuals who started the treatment for Pulmonary tuberculosis (TB) during the COVID-19 pandemic in São Luís. Thirty-six TB patients and thirty-five age/sex-matched individuals were recruited between January 2021 and January 2022. The clinical features, sociodemographic information, and serum were obtained at the diagnosis time. Adherence to treatment and adverse reactions were investigated monthly. The most common symptoms in TB patients were cough (91.6%) and fever (83.3%). All TB patients had elevated pre-therapy levels of CRP and reduced HDL: 88.9% presented hypocalcemia and 47.2% showed elevated ALP and GGT. TB patients showed higher levels of ALT, AST, ALP, GGT, CRP, amylase, and triglycerides than the comparison group (p < 0.05), while the calcium levels were reduced (p < 0.0001). TB patients with anti-SARS-CoV-2-IgG antibodies (seroprevalence of 66.7%) presented higher values of amylase and lower CRP levels (p < 0.05). Most patients (~70%) reported at least one adverse drug reaction, mainly pruritus and nausea. The treatment abandonment rate was 19.2%. In conclusion, TB patients showed elevated pre-therapy levels of CRP, low levels of HDL, and hypocalcemia. Liver and pancreatic functions were also compromised in several patients before the therapy. The treatment non-adherence rate observed was similar to other studies performed before the pandemic period.
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Mixtures of cationic and anionic surfactants often originate bilayer structures, such as vesicles and lamellar liquid crystals, that can be explored as model membranes for fundamental studies or as drug and gene nanocarriers. Here, we investigated the aggregation properties of two catanionic mixtures containing biomimetic surfactants derived from serine. The mixtures are designated as 12Ser/8-8Ser and 14Ser/10-10Ser, where mSer is a cationic, single-chained surfactant and n-nSer is an anionic, double-chained one (m and n being the C atoms in the alkyl chains). Our goal was to investigate the effects of total chain length and chain length asymmetry of the catanionic pair on the formation of catanionic vesicles, the vesicle properties and the vesicle/micelle transitions. Ocular observations, surface tension measurements, video-enhanced light microscopy, cryogenic scanning electron microscopy, dynamic and electrophoretic light scattering were used to monitor the self-assembly process and the aggregate properties. Catanionic vesicles were indeed found in both systems for molar fractions of cationic surfactant ≥0.40, always possessing positive zeta potentials (ζ = +35-50 mV), even for equimolar sample compositions. Furthermore, the 14Ser/10-10Ser vesicles were only found as single aggregates (i.e., without coexisting micelles) in a very narrow compositional range and as a bimodal population (average diameters of 80 and 300 nm). In contrast, the 12Ser/8-8Ser vesicles were found for a wider sample compositional range and as unimodal or bimodal populations, depending on the mixing ratio. The aggregate size, pH and zeta potential of the mixtures were further investigated. The unimodal 12Ser/8-8Ser vesicles (
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Background: Nursing is at the forefront of palliative care. Games are an innovative strategy in palliative care training. Aims: This study aimed to examine the usefulness of games for nurses in palliative care. Methods: A scoping review was conducted using the following databases: CINAHL and PUBMED (which includes MEDLINE, PsycINFO, SCOPUS and SciELO). The steps outlined by the Joanna Briggs Institute were followed. Findings: Of the 685 articles initially identified, 17 were included for analysis. Games used were role-play (n=12), card games (n=1), digital games (n=1), board games (n=1), reflection games (n=1) and experimental games (n=1). Games were aimed at nurses (n=6) and nursing students (n= 1 1). Game advantages included: improved palliative care knowledge, increased communication skills, reduced negative emotions and increased multidisciplinary team skills. Conclusions: Effective and innovative pedagogical techniques are required training techniques for nurses and nursing students who provide palliative care, as they can reduce negative emotions such as fear, anguish and guilt.
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Enfermagem de Cuidados Paliativos na Terminalidade da Vida , Enfermeiras e Enfermeiros , Humanos , Cuidados Paliativos , Competência ClínicaRESUMO
OBJECTIVE: There has been increasing recognition of the potential of games in health; however, knowledge of their application in palliative care is lacking. Therefore, this study aimed to identify and map the available evidence on the use of games in palliative care, analyzing how research has been conducted on this topic and identifying gaps in knowledge. METHOD: A scoping review was carried out. The literature search was conducted using the respective descriptors and search syntax appropriate to each of the databases searched. The review included all study types with no time limits. RESULTS: Of the 685 articles initially identified, 53 were included for final analysis. Several different game types were identified, with the majority of studies using role-play (n = 29) and card games (n = 17). The games analyzed were essentially aimed at empowering patients (n = 14), and in some cases, extended to families or caregivers, as well as to medical and nursing students. The analysis of the articles in this review resulted in two major themes: Role-playing for training in palliative care and card games to discuss end-of-life care. SIGNIFICANCE OF RESULTS: Games allow space for the expression of emotions and promote creativity. They can be applied both in a training context, to enable health professionals to develop essential skills in palliative care, and for patients, families, and caregivers, allowing them to talk about serious things while playing.
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Cuidados Paliativos na Terminalidade da Vida , Enfermagem de Cuidados Paliativos na Terminalidade da Vida , Assistência Terminal , Humanos , Cuidados Paliativos/métodos , Pessoal de Saúde/educaçãoRESUMO
Sea turtles are considered as bio-indicators for monitoring the efficiency of restoration measures to reduce marine litter impacts on health. However, the lack of extended and standardised empirical data has prevented the accurate analysis of the factors influencing litter ingestion and the relationships with individual health. Historic data collected from 1988 and standard data collected from 2016 were harmonised to enable such analyses on necropsied loggerhead turtles (Caretta caretta) in eight Mediterranean and North-East Atlantic countries. Litter was found in 69.24 % of the 1121 individuals, mostly single-use and fishing-related plastics. Spatial location, sex and life history stage explained a minor part of litter ingestion. While no relationships with health could be detected, indicating that all individuals can be integrated as bio-indicators, the mechanistic models published in literature suggest that the high proportion of plastics in the digestive contents (38.77 % per individual) could have long-term repercussions on population dynamics.
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Tartarugas , Animais , Plásticos , Autopsia , Europa (Continente) , Ingestão de AlimentosRESUMO
Adipose tissue (AT) secretes adipokines, modulators of low-grade chronic inflammation in obesity. Molecules that induce the emergence of new and functional adipocytes in AT can alleviate or prevent inflammatory and metabolic disorders. The objective of this study was to investigate the role of palmitoleic acid (n7) in 3T3-L1 and primary pre-adipocyte differentiation and AT inflammation. C57BL/6j mice were submitted to a control or high-fat diet (HFD) for 8 weeks, and treated with n7 for 4 weeks. Mice consuming a HFD presented an increase in body weight, epididymal (Epi) fat mass, and Epi adipocytes size. N7 treatment attenuated the body weight gain and completely prevented the hypertrophy of Epi adipocytes, but not the increment in Epi mass induced by the HFD, suggesting a greater adipocytes hyperplasia in animals treated with n7. It was agreed that n7 increased 3T3-L1 proliferation and differentiation, as well as the expression of genes involved in adipogenesis, such as Cebpa, Pparg, aP2, Perilipin, and Scl2a4. Furthermore, n7 decreased the inflammatory cytokines Mcp1, Tnfa, Il6, Cxcl10, and Nos2 genes in Epi vascular stromal cells, but not in the whole AT. These findings show that n7 exerts anti-hypertrophic effects in adipocytes which influence the surrounding cells by attenuating the overexpression of pro-inflammatory cytokines triggered by a HFD.
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Smaller adipocytes are related to the reversal of metabolic disorders, suggesting that molecules that can act in the adipogenesis pathway are of great interest. The objective of this study was to investigate the effect of Ginkgo biloba extract (GbE) in modulating the differentiation in preadipocytes. 3T3-L1 preadipocytes were differentiated for 7 days into adipocytes without (control group) and with GbE at 1.0 mg/mL. Lipid content and gene expression were analyzed on day 7 (D7) by Oil Red O staining and PCR Array Gene Expression. Western blotting analysis of the key adipogenesis markers was evaluated during the differentiation process at days 3 (D3), 5 (D5), and 7 (D7). GbE increased lipid content and raised the gene expression of the main adipogenesis markers. Key proteins of the differentiation process were modulated by GbE, since C/EBPß levels were decreased, while C/EBPα levels were increased at D7. Regarding the mature adipocytes' markers, GbE enhanced the levels of both FABP4 at D5, and perilipin at D3 and D5. In summary, the present findings showed that GbE modulated the adipogenesis pathway suggesting that the treatment could accelerate the preadipocyte maturation, stimulating the expression of mature adipocyte proteins earlier than expected.
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Cyber-harassment refers to a pattern of repeated, intentional, and unwanted annoyances, impositions, threats, or other aggravating actions mediated by Information and Communication Technologies. Globally, substantial proportions of adolescents experience cyber-harassment, resulting in a host of deleterious health-related consequences. This study tested the empirical utility of the Lifestyle-Routine Activities Theory in accounting for adolescent cyber-victimization. A representative sample of 627 adolescents, aged 12-16, enrolled in schools from northern Portugal and Azores, were surveyed. Consistent with the theoretical assumptions, older adolescents, who used tablets, published information on social network profiles, added unknown people as friends, met face-to-face with them, and had parents with less knowledge of their online contacts were at increased risk of being cyber-victimized. Theoretical and practical implications are elaborated.
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Bullying , Vítimas de Crime , Cyberbullying , Adolescente , Humanos , Estilo de Vida , PortugalRESUMO
Several studies have demonstrated that a maternal low-protein diet induces long-term metabolic disorders, but the involved mechanisms are unclear. This study investigated the molecular effects of a low-protein diet during pregnancy and lactation on glucose and protein metabolism in soleus muscle isolated from adult male rats. Female rats were fed either a normal protein diet or low-protein diet during gestation and lactation. After weaning, all pups were fed a normal protein diet until the 210th day postpartum. In the 7th month of life, mass, contractile function, protein and glucose metabolism, and the Akt-mTOR pathway were measured in the soleus muscles of male pups. Dry weight and contractile function of soleus muscle in the low-protein diet group rats were found to be lower compared to the control group. Lipid synthesis was evaluated by measuring palmitate incorporation in white adipose tissue. Palmitate incorporation was higher in the white adipose tissue of the low-protein diet group. When incubated soleus muscles were stimulated with insulin, protein synthesis, total amino acid incorporation and free amino acid content, glucose incorporation and uptake, and glycogen synthesis were found to be reduced in low-protein diet group rats. Fasting glycemia was higher in the low-protein diet group. These metabolic changes were associated with a decrease in Akt and GSK-3ß signaling responses to insulin and a reduction in RPS6 in the absence of the hormone. There was also notably lower expression of Akt in the isolated soleus muscle of low-protein diet group rats. This study is the first to demonstrate how maternal diet restriction can reduce skeletal muscle protein and mass by downregulating the Akt-mTOR pathway in adulthood.
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OBJECTIVE: The study goal was to analyze the effects of a high-fat diet (HFD) on the histone 3 lysine 27 (H3K27) posttranscriptional modifications and the expression of histone-modifying enzymes in adipose-derived stromal cells (ASCs) from white adipose tissue (WAT). METHODS: Male C57BL/6J mice received control or HFD for 12 weeks. The ASCs were isolated from subcutaneous and visceral (epididymal) WAT, cultivated, and evaluated for expression of H3K27 trimethylation (H3K27me3) and H3K27 acetylation (H3K27ac) by Western blot. The transcription of histone-modifying enzymes was analyzed by real-time polymerase chain reaction. RESULTS: When compared with control, HFD ASCs showed a decrease in H3K27ac enrichment in subcutaneous and visceral WAT and ATP-citrate lyase expression in subcutaneous WAT. Curiously, the expression of CREB-binding protein was increased in visceral ASCs from HFD-fed mice. CONCLUSIONS: These results show that an HFD significantly reduces acetylation of H3K27 in ASCs and the expression of ATP-citrate lyase in subcutaneous ASCs, suggesting that, in this fat depot, the H3K27ac reduction could be partly due to lower acetyl-coenzyme A availability. H3K27ac is an epigenetic mark responsible for increasing the transcription rate and its reduction can have an important impact on ASC proliferation and differentiation potential.
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Dieta Hiperlipídica , Histonas , Acetilação , Trifosfato de Adenosina , Animais , Proteína de Ligação a CREB/metabolismo , Coenzima A/metabolismo , Histonas/metabolismo , Lisina/metabolismo , Masculino , Camundongos , Camundongos Endogâmicos C57BL , Células Estromais/metabolismoRESUMO
The complexity, and the diversity of the different types of cancers allied to the tendency to form metastasis make treatment efficiency so tricky and often impossible due to the advanced stage of the disease in the diagnosis. In recent years, due to tremendous scientific breakthroughs, we have witnessed exponential growth in the elucidation of mechanisms that underlie carcinogenesis and metastasis. The development of more selective therapies made it possible to improve cancer treatment. Although interdisciplinary research leads to encouraging results, scientists still have a long exploration journey. RNA technology represents a promise as a therapeutic intervention for targeted gene silencing in cancer, and there are already some RNA-based formulations in clinical trials. However, the use of RNA as a therapeutic tool presents severe limitations, mainly related to its low stability and poor cellular uptake. Thus, the use of nanomedicine employing nanoparticles to encapsulate RNA may represent a suitable platform to address the major challenges hampering its therapeutic application. In this review, we have revisited the potential of RNA and RNA-associated therapies to fight cancer, also providing, as support, a general overview of nanoplatforms for RNA delivery.
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Lung inflammation is modulated by cholinergic signaling and exercise training protects mice against pulmonary emphysema development; however, whether exercise training engages cholinergic signaling is unknown. AIMS: As cholinergic signaling is directly linked to the vesicular acetylcholine transporter (VAChT) levels, we evaluated whether the effects of aerobic exercise training depend on the VAChT levels in mice with pulmonary emphysema. MAIN METHODS: Wild-type (WT) and mutant (KDHOM) mice (65-70% of reduction in VAChT levels) were exposed to cigarette smoke (30 min, 2×/day, 5×/week, 12 weeks) and submitted or not to aerobic exercise training on a treadmill (60 min/day, 5×/week, 12 weeks). Lung function and inflammation were evaluated. KEY FINDINGS: Cigarette smoke reduced body mass in mice (p < 0.001) and increased alveolar diameter (p < 0.001), inflammation (p < 0.001) and collagen deposition (p < 0.01) in lung tissue. Both trained groups improved their performance in the final physical test compared to the initial test (p < 0.001). In WT mice, exercise training protected against emphysema development (p < 0.05), reduced mononuclear cells infiltrate (p < 0.001) and increased MAC-2 positive cells in lung parenchyma (p < 0.05); however, these effects were not observed in KDHOM mice. The exercise training reduced iNOS-positive cells (p < 0.001) and collagen fibers deposition (p < 0.05) in lung parenchyma of WT and KDHOM mice, although KDHOM mice showed higher levels of iNOS-positive cells. SIGNIFICANCE: Our data suggest that the protective effects of aerobic exercise training on pulmonary emphysema are, at least in part, dependent on the integrity of the lung cholinergic signaling.
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Fumar Cigarros , Enfisema , Enfisema Pulmonar , Animais , Colinérgicos , Inflamação , Pulmão , Camundongos , Camundongos Endogâmicos C57BL , Enfisema Pulmonar/etiologia , Enfisema Pulmonar/prevenção & controle , Proteínas Vesiculares de Transporte de AcetilcolinaRESUMO
In this work, a method for total sulphur determination in automotive gasoline using dried matrix spot sampling is proposed. The method is based on the deposition of the sample on a cellulose-based filter paper and subsequent sulphur quantification via CS diatomic molecule using high-resolution continuum source graphite furnace molecular absorption spectrometry (HR-CS GF MAS). The sample deposition was carried out, along with the chemical modifier, on a 20-mm filter paper disc previously adapted into a polytetrafluoroethylene (PTFE) mould. The liquid phase was removed by heating the PTFE mould, and then the gasoline sample-embedded filter paper was punched in smaller discs (procedure A) or pulverised (procedure B) before the analyses. The mixture of Pd and Mg was used as chemical modifier to stabilise the sulphur compounds on the filter paper and on the graphite furnace. All the calibration curves constructed using seven different sulphur-containing compounds had a coefficient of determination higher than 0.995 and a linear range from 2 to 150 mg kg-1 S. By using the optimised conditions, the best characteristic mass, limits of detection and quantitation were 6 ng, 0.6 and 1.8 mg kg-1, respectively. The two sampling procedures (A and B) were evaluated for real samples, and procedure B was chosen since it markedly improved the precision. Using this procedure, satisfactory recovery values from 95 to 106% were obtained in the spike-recovery tests. In addition, the S concentrations for the certified reference materials were not statistically different from the certified values at 95% confidence level. Sulphur concentrations from 20 to 46 mg kg-1 were found in the six analysed gasoline samples, and these values were statistically assessed using a reference method (ASTM 5453). Spectral interference caused by MgF and MgCl diatomic molecules was observed and investigated.
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Gasolina , Grafite , Calibragem , Espectrofotometria Atômica , EnxofreRESUMO
OBJECTIVE: Carry out a reflective analysis on the relationship of obesity as a risk factor for the worsening of COVID-19. METHOD: Reflective study, supported by scientific evidence, which contributed to a critical-reflexive construction on the theme "Obesity" in interface with "Covid-19". RESULTS: This study brought up important reflections for health professionals, researchers and managers, from the beginning of the pandemic, a period in which obesity was not recognized as a risk factor, until the current scenario, in which a series of pathophysiological mechanisms that clinically connect these diseases are being proposed. CONCLUSION: Obesity is a risk factor for the worsening of COVID-19, which is contributing to the overload of health services, and which requires differentiated health care, with adjustments in care, pharmacological protocols and commitment to health education in the within the Unified Health System.
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COVID-19/etiologia , Progressão da Doença , Obesidade/complicações , Pandemias , COVID-19/epidemiologia , COVID-19/mortalidade , Humanos , Obesidade/epidemiologia , Obesidade/mortalidade , Fatores de Risco , SARS-CoV-2/patogenicidadeRESUMO
The increasing impact of obesity on global human health intensifies the importance of studies focusing on agents interfering with the metabolism and remodeling not only of the white adipose tissue (WAT) but also of the liver. In the present study, we have addressed the impact of n-3 PUFA in adipose cells' proliferation and adipogenesis, as well as in the hepatic lipid profile and morphology. Mice were induced to obesity by the consumption of a high-fat diet (HFD) for 16 weeks. At the 9th week, the treatment with fish oil (FO) was initiated and maintained until the end of the period. The FO treatment reduced the animals' body mass, plasma lipids, glucose, plasma transaminases, liver mass, triacylglycerol, and cholesterol liver content when compared to animals consuming only HFD. FO also decreased the inguinal (ing) WAT mass, reduced adipocyte volume, increased adipose cellularity (hyperplasia), and increased the proliferation of adipose-derived stromal cells (AdSCs) which corroborates the increment in the proliferation of 3T3-L1 pre-adipocytes or AdSCs treated in vitro with n-3 PUFA. After submitting the in vitro treated (n-3 PUFA) cells, 3T3-L1 and AdSCs, to an adipogenic cocktail, there was an increase in the mRNA expression of adipogenic transcriptional factors and other late adipocyte markers, as well as an increase in lipid accumulation when compared to not treated cells. Finally, the expression of browning-related genes was also higher in the n-3 PUFA treated group. We conclude that n-3 PUFA exerts an attenuating effect on body mass, dyslipidemia, and hepatic steatosis induced by HFD. FO treatment led to decreasing adiposity and adipocyte hypertrophy in ingWAT while increasing hyperplasia. Data suggest that FO treatment might induce recruitment (by increased proliferation and differentiation) of new adipocytes (white and/or beige) to the ingWAT, which is fundamental for the healthy expansion of WAT.
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Adipogenia/efeitos dos fármacos , Ácidos Graxos Ômega-3/farmacologia , Óleos de Peixe/farmacologia , Hepatopatia Gordurosa não Alcoólica/prevenção & controle , Obesidade/terapia , Células 3T3-L1 , Adipócitos/efeitos dos fármacos , Tecido Adiposo Branco/efeitos dos fármacos , Adiposidade/efeitos dos fármacos , Animais , Diferenciação Celular/efeitos dos fármacos , Proliferação de Células/efeitos dos fármacos , Dieta Hiperlipídica , Masculino , Camundongos , Camundongos Endogâmicos C57BL , Hepatopatia Gordurosa não Alcoólica/etiologia , Obesidade/complicaçõesRESUMO
This study aimed to investigate the effects of two commercially available fish oils (FOs) containing different proportions of two omega-3 fatty acids (FA), eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), on the metabolic and endocrine dysfunctions of white adipose tissue resulting from obesity. Male C57BL/6J mice, 8 weeks old, received a control or high-fat diet (CO and HF groups, with 9% and 59% energy from fat, respectively) for 8 weeks. The next 8 weeks, the HF group was subdivided into HF, HF+FO/E (HF+5:1 EPA:DHA), and HF+FO/D (HF+5:1 DHA:EPA). Supplementation was performed by gavage, three times a week. All groups that received the HF diet had lower food and caloric intake, but a higher fat intake, body weight (BW) gain, glucose intolerance, and a significant increase in inguinal (ING), retroperitoneal (RP), and epididymal (EPI) adipose tissues when compared to the CO group. Additionally, HF and HF+FO/D groups showed insulin resistance, adipocyte hypertrophy, increased lipolysis and secretion of TNF-α, resistin and IL-10 adipokines by ING and RP adipocytes, and adiponectin only by the HF+FO/D group in ING adipocytes. All of these effects were completely reversed in the HF+FO/E group, which also showed partial reversion in BW gain and glucose intolerance. Both the HF+FO/E and HF+FO/D groups showed a reduction in ING and RP adipose depots when compared to the HF group, but only HF+FO/E in the EPI depot. HF+FO/E, but not HF+FO/D, was able to prevent the changes triggered by obesity in TNF-α, Il-10, and resistin secretion in ING and RP depots. These results strongly suggest that different EPA:DHA ratios have different impacts on the adipose tissue metabolism, FO being rich in EPA, but not in DHA, and effective in reversing the changes induced by obesity.
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Ácido Eicosapentaenoico/farmacologia , Óleos de Peixe/farmacologia , Alimentos Fortificados , Síndrome Metabólica/terapia , Obesidade/terapia , Adipócitos/efeitos dos fármacos , Tecido Adiposo/metabolismo , Animais , Dieta Hiperlipídica/efeitos adversos , Modelos Animais de Doenças , Ácidos Docosa-Hexaenoicos/farmacologia , Resistência à Insulina/fisiologia , Masculino , Síndrome Metabólica/complicações , Síndrome Metabólica/fisiopatologia , Camundongos , Camundongos Endogâmicos C57BL , Camundongos Obesos , Obesidade/complicações , Obesidade/fisiopatologia , Aumento de Peso/efeitos dos fármacosRESUMO
ABSTRACT Objective: Carry out a reflective analysis on the relationship of obesity as a risk factor for the worsening of COVID-19. Method: Reflective study, supported by scientific evidence, which contributed to a critical-reflexive construction on the theme "Obesity" in interface with "Covid-19". Results: This study brought up important reflections for health professionals, researchers and managers, from the beginning of the pandemic, a period in which obesity was not recognized as a risk factor, until the current scenario, in which a series of pathophysiological mechanisms that clinically connect these diseases are being proposed. Conclusion: Obesity is a risk factor for the worsening of COVID-19, which is contributing to the overload of health services, and which requires differentiated health care, with adjustments in care, pharmacological protocols and commitment to health education in the within the Unified Health System.
RESUMEN Objetivo: Realizar un análisis reflexivo sobre la relación de la obesidad como factor de riesgo para el agravamiento de COVID-19. Método: Estudio reflexivo, sustentado en evidencia científica, que contribuyó a una construcción crítico-reflexiva sobre el tema "Obesidad" en interfaz con "Covid-19". Resultados: Este estudio trajo reflexiones importantes para los profesionales de la salud, investigadores y gestores, desde el inicio de la pandemia, período en el que la obesidad no fue reconocida como factor de riesgo, hasta el escenario actual, en el que una serie de mecanismos fisiopatológicos que conectan clínicamente estas enfermedades. Conclusión: la obesidad es un factor de riesgo para el agravamiento del COVID-19, que está contribuyendo a la congestión de los servicios de salud, y que requiere una atención de salud diferenciada, con ajustes en la atención, protocolos farmacológicos y compromiso con la educación en salud en el dentro del Sistema Único de Salud.
RESUMO Objetivo: Realizar uma análise reflexiva sobre a relação da obesidade como fator de risco para o agravamento dos quadros de COVID-19. Método: Estudo reflexivo, subsidiado por evidências científicas, que contribuíram para uma construção crítico-reflexiva sobre a temática "Obesidade" em interface à "Covid-19". Resultados: Este estudo traz à tona reflexões importantes para os profissionais de saúde, pesquisadores e gestores, desde o princípio da pandemia, período no qual a obesidade não era reconhecida como fator de risco, até o cenário atual, no qual uma serie de mecanismos fisiopatológicos que conectam clinicamente essas doenças estão sendo propostos. Conclusão: A obesidade é um fator de risco para agravamento da COVID-19, que está contribuindo para o congestionamento dos serviços de saúde, e que requer uma assistência de saúde diferenciada, com ajustes de protocolos assistenciais, farmacológicos e empenho na educação em saúde no âmbito do Sistema Único de Saúde.