Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 86
Filtrar
1.
Mol Cell Endocrinol ; : 112268, 2024 May 10.
Artículo en Inglés | MEDLINE | ID: mdl-38735622

RESUMEN

Menopause causes important bodily and metabolic changes, which favor the increased occurrence of cardiovascular diseases, obesity, diabetes, and osteoporosis. Resveratrol exerts proven effects on body metabolism, improving glucose and lipid homeostasis and reducing inflammation and oxidative stress in various organs and tissues. Accordingly, this study evaluates the effects of resveratrol supplementation on the expression of markers associated with thermogenesis in brown adipose tissue, and on the body, metabolic and hormonal parameters of female mice submitted to bilateral oophorectomy. Eighteen female mice were randomized into three groups: G1: control (CONTROL), G2: oophorectomy (OOF), and G3: oophorectomy + resveratrol (OOF+RSV); the animals were kept under treatment for twelve weeks, being fed a standard diet and treated with resveratrol via gavage. Body, biochemical, hormonal, and histological parameters were measured; in addition to the expression of markers associated with thermogenesis in brown adipose tissue. The results showed that animals supplemented with resveratrol showed reduced body weight and visceral adiposity, in addition to glucose, total cholesterol, and triglyceride levels; decreased serum FSH levels and increased estrogen levels were observed compared to the OOF group and mRNA expression of PRDM16, UCP1, and SIRT3 in brown adipose tissue. The findings of this study suggest the important role of resveratrol in terms of improving body, metabolic, and hormonal parameters, as well as modulating markers associated with thermogenesis in brown adipose tissue of female mice submitted to oophorectomy.

2.
Food Res Int ; 181: 114083, 2024 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-38448094

RESUMEN

Malnutrition is considered one of the major public health problems worldwide and negatively affects the growth, development and learning of schoolchildren. This study developed and evaluated a fermented milk drink with added Umbu (Spondias tuberosa) pulp in the weight gain and renutrition of mice submitted to malnutrition by calorie restriction, and in malnourished children. The supplementation with this fermented milk drink contributed to an increase of 7.2 % in body weight, and 64.3 % in albumin, and a reduction of 35 % in cholesterol in malnourished mice. In humans, a group of nine malnourished children consumed a daily 200 mL serving of the milk drink (for 60 days). For humans, the fermented milk drink allowed an increase of 16.5 % in body weight, and 20.9 % in body mass index in malnourished children. In conclusion, fermented milk drink has a positive effect on the re-nutrition of malnourished mice and helps to improve the nutritional status of malnourished children.


Asunto(s)
Anacardiaceae , Desnutrición , Niño , Humanos , Animales , Ratones , Suero Lácteo , Leche , Estado Nutricional , Proteína de Suero de Leche , Aumento de Peso , Peso Corporal
3.
Support Care Cancer ; 32(1): 82, 2024 Jan 04.
Artículo en Inglés | MEDLINE | ID: mdl-38175289

RESUMEN

OBJECTIVE: To identify predictors of sarcopenia (demographical, anthropometric measurements, tumor-related clinical characteristics, performance status, and serum C-reactive protein (CRP) and albumin levels in individuals with head and neck squamous cell carcinoma (HNSCC). MATERIAL AND METHODS: This cross-sectional study selected diagnosed with HNSCC (n = 125). Sarcopenia was defined as low muscle strength and low physical performance. Association between sarcopenia and anthropometric assessments (weight, height, body mass index, triceps skinfold, mid-upper arm circumference [MUAC], mid-upper arm muscle circumference, mid-upper arm fat area [UFA], mid-upper arm bone free muscle area, calf circumference, and appendicular skeletal muscle mass and index), tumor clinical characteristics (anatomical site, tumor size, and cervical metastasis), performance status scale (Eastern Cooperative Oncology Group Performance Status [ECOG-PS]), and CRP and albumin levels was analyzed using binary logistic regression models. RESULTS: The diagnosis of sarcopenia was identified in 28 (22.4%) individuals with HNSCC. Being an older adult increases the odds of association with sarcopenia in individuals with HNSCC (odds ratio [OR] = 1.05). Increments in MUAC measurement reduce the odds of association with sarcopenia (OR = 0.69), while the increase in the UFA measurement increases the odds of association with sarcopenia (OR = 1.33). Poor ECOG-PS scores increase the odds of association with sarcopenia in individuals with HNSCC (OR = 5.54). CONCLUSION: Early identification of easy-to-perform, cost-effective predictors of sarcopenia tends to favor the implementation of personalized therapeutic and supportive interventions in individuals with HNSCC.


Asunto(s)
Neoplasias de Cabeza y Cuello , Sarcopenia , Humanos , Anciano , Sarcopenia/epidemiología , Sarcopenia/etiología , Carcinoma de Células Escamosas de Cabeza y Cuello , Estudios Transversales , Proteína C-Reactiva , Neoplasias de Cabeza y Cuello/complicaciones
4.
Phytomedicine ; 119: 155000, 2023 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-37541071

RESUMEN

BACKGROUND: Lychnophora ericoides Mart, also known as the Brazilian arnica or fake arnica, belongs to the Asteraceae family. Leaves and roots are used in alcoholic and hydroalcoholic preparations for the treatment of wounds, inflammation, and pain. PURPOSE: The present study aimed to investigate the effects of L. ericoides ethanolic extract (EELE) on cutaneous wound healing and the mechanisms of action involved. METHODS: A total of 72 C57BL/6 mice were randomly divided into four groups of six animals each. An excisional wound was made in the dorsal region of each mouse. The test groups were topically treated with the vehicle, a positive control commercial reference drug, EELE ointment (5%), and EELE ointment (10%). The treatments were applied over 14 days. The wound area was measured every two days to verify the wound closure kinetics. On days 3, 7, and 14 the wound tissue samples were processed for Hematoxylin and Eosin, Masson-Trichrome, and Toluidine blue staining. The expression of renin-angiotensin system (RAS) components, the vascular growth factor-A (VEGF-A), the basic fibroblast growth factor (FGF-2), and type I collagen genes were evaluated. Phytochemical analyses were performed using HPLC-DAD and HPLC-MS/MS. RESULTS: The EELE (10%) significantly reduced the wound area compared to the treatments used for the other groups. Histological analysis demonstrated that wounds treated with L. ericoides for 14 days developed improved anatomical skin features, healed with hair follicles and sebaceous glands, increased collagen production and angiogenesis, and decreased the number of mast cells at the injury site. Real-time PCR data demonstrated that groups treated with EELE (10%) showed increased Type I collagen, VEGF-A, FGF-2, and AT1R and decreased ACE II and receptor MAS. The healing action of L. ericoides may be related to the presence of phenolic compounds, such as phenolic acids, chlorogenic acid derivatives, and C-glycoside flavonoids. CONCLUSION: Topical treatment with EELE increases important factors for wound healing: FGF, VEGF, collagen formation, and the expression of the proliferative axis of the renin-angiotensin system. For the first time, the present study shows the healing action of L. ericoides at the molecular level in an animal model. This process can be used as an alternative therapy for wound healing and the development of herbal therapy.


Asunto(s)
Arnica , Asteraceae , Ratones , Animales , Arnica/metabolismo , Etanol/química , Colágeno Tipo I/metabolismo , Brasil , Espectrometría de Masas en Tándem , Pomadas/metabolismo , Pomadas/farmacología , Factor A de Crecimiento Endotelial Vascular/metabolismo , Factor 2 de Crecimiento de Fibroblastos/metabolismo , Factor 2 de Crecimiento de Fibroblastos/farmacología , Ratones Endogámicos C57BL , Extractos Vegetales/química , Asteraceae/química , Cicatrización de Heridas , Piel , Colágeno/metabolismo
5.
Gene ; 883: 147683, 2023 Oct 20.
Artículo en Inglés | MEDLINE | ID: mdl-37536400

RESUMEN

Sestrins (SESNs) are a family of evolutionarily conserved proteins among mammals. They have several body homeostatic functions such as antioxidant, metabolic, and anti-aging, and are required to regenerate hyperoxidized forms of peroxiredoxins and reactive oxygen species. Sestrin 2 has been studied as a therapeutic agent in obesity treatment. Gallic acid (GA) is a triphenolic compound with beneficial biological activities including anti-inflammatory, antidiabetic, antihypertensive, and antioxidant effects. Recent studies demonstrated the GA's ability to reduce body weight gain and improve glycemic parameters. In this sense, the present study aims to investigate the GA activating potential of Sestrin using the molecular docking method. The 3D structure of gallic acid was retrieved from the NCBI PubChem database and the chemical structure of the Sestrin2 protein from the RCSB Protein Data Bank (5DJ4). The docking calculus was performed via UCSF Chimera and AutoDock Vinaprograms. The results showed that amino acids Arg390, Glu451, Trp444, Thr386, Arg448, Thr374, Tyr375, Asn376, Thr377, Leu389, His454, Ser450, His86, and Val455 are very important for GA stabilization, resembling the interactions that permit Leucine to activate SESN2. In this context, the obesity therapeutic property of GA can be understood from a Sestrin activating process through amino acid metabolism.


Asunto(s)
Ácido Gálico , Sestrinas , Animales , Simulación del Acoplamiento Molecular , Ácido Gálico/farmacología , Ácido Gálico/uso terapéutico , Obesidad/tratamiento farmacológico , Antioxidantes , Mamíferos
6.
Biol Res Nurs ; 25(4): 647-657, 2023 10.
Artículo en Inglés | MEDLINE | ID: mdl-37246238

RESUMEN

BACKGROUND: Preeclampsia (PE) is a multifunctional and multisystem disorder. Several factors favor the development of PE, including obesity. Cytokines are also expressed in the placenta, predisposing to local alterations that favor the development of distinct pathological processes, including PE. This study aimed to evaluate the apelin and visfatin mRNA expression in the placental tissue of women with preeclampsia and overweight/obesity and correlates with maternal and fetal variables. METHODS: A cross-sectional analytical study was performed with 60 pregnant women and their newborns. Clinical, anthropometric, and laboratory variables were collected. Placental tissue samples were obtained, and the apelin and visfatin mRNA expression levels were assessed by qRT-PCR. RESULTS: The main findings evidenced lower levels of apelin expression in overweight/obese women, accompanied by a negative correlation with BMI and pre-pregnancy weight; a higher expression of apelin was also observed in women with late PE and no personal history of PE. For visfatin levels, higher expression levels were observed in women with late PE and term delivery. Furthermore, a positive correlation was observed between visfatin levels and fetal anthropometric parameters, such as weight, length, and head circumference. CONCLUSION: Apelin levels were less expressed in overweight/obese women. Apelin and visfatin levels were correlated/associated with maternal-fetal variables.


Asunto(s)
Preeclampsia , Femenino , Embarazo , Humanos , Recién Nacido , Apelina/metabolismo , Placenta/metabolismo , Sobrepeso , Nicotinamida Fosforribosiltransferasa/metabolismo , Estudios Transversales , Citocinas , Obesidad/metabolismo , ARN Mensajero/metabolismo
7.
Behav Sci (Basel) ; 13(4)2023 Apr 19.
Artículo en Inglés | MEDLINE | ID: mdl-37102854

RESUMEN

The COVID-19 pandemic has increased the incidence of depression and other mental disorders in the general population, influenced by various individual and contextual factors. Physical activity (PA) interventions offer a promising approach to mitigating the negative mental health effects of the pandemic. This study aims to analyze the association between PA and depressive symptoms. A total of 785 individuals aged 37.4 ± 13.2 years (72.5% female) were evaluated at two different time points: the first between 2018 and 2019, and the second during the COVID-19 pandemic in 2020. Depressive symptoms, demographic, and socioeconomic data were assessed using the Beck Depression Inventory to estimate depressive symptoms. Frequency analysis and binary and multinomial regression were employed for data analysis. The prevalence of mild depressive symptoms increased from 23.1% before the pandemic to 35.1% during the pandemic. Our findings reveal that practicing PA before the pandemic was a protective factor (OR: 0.19; 95% CI: 0.13, 0.30; p < 0.001) against mild depressive symptoms. Additionally, individuals who continued to practice PA during the pandemic had a lower chance of presenting mild (OR: 0.21; 95% CI: 0.15, 0.30) and moderate/severe (OR: 0.15; 95% CI: 0.08, 0.27) symptoms. Furthermore, our study shows that PA, which was already a protective factor before the pandemic, remained protective during the pandemic, even for those with the highest levels of depression.

8.
Plant Foods Hum Nutr ; 78(2): 342-350, 2023 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-37120677

RESUMEN

Hibiscus sabdariffa L. is a worldwide component for tea and beverages, being a natural source of anthocyanins, which are associated with cardiovascular activities. To investigate this relationship, we explored different methods of aqueous extraction on the anthocyanin content and antioxidant activity of H. sabdariffa L. calyx extract (HSCE). Pharmacological effects via platelet aggregation, calcium mobilization, cyclic nucleotide levels, vasodilator-stimulated phosphoprotein Ser157 and Ser239, and on the vasomotor response of aortic rings isolated from mice are studied herewith. We found that the application of ultrasonic turbolization, 20 min, combined with acidified water was significantly more effective in the extraction process, providing extracts with the highest levels of anthocyanins (8.73 and 9.63 mg/100 g) and higher antioxidant activity (6.66 and 6.78 µM trolox/g of sample). HSCE significantly inhibited (100-1000 µg/mL) arachidonic acid-induced platelet aggregation, reduced calcium mobilization, and increased cAMP and cGMP levels with VASPSer157 and VASPSer239 phosphorylation. Vasorelaxation reduction was confirmed by the aortic rings and endothelium assays treated with nitric oxide synthase inhibitors, soluble guanylyl cyclase (sGC) oxidizing agent, or Ca2+-activated K+ channel inhibitor. The increasing of cGMP levels could be understood considering the sGC stimulation by HSCE compounds in the specific stimulus domain, which allows an understanding of the observed antiplatelet and vasorelaxant properties of H. sabdariffa L. calyx extract.


Asunto(s)
Hibiscus , Vasodilatadores , Animales , Ratones , Vasodilatadores/farmacología , Antocianinas/farmacología , Antioxidantes/farmacología , Calcio , Extractos Vegetales/farmacología , GMP Cíclico/metabolismo
9.
Mol Cell Endocrinol ; 563: 111840, 2023 03 01.
Artículo en Inglés | MEDLINE | ID: mdl-36592923

RESUMEN

Maternal obesity and dietary style in the pregnancy-lactation period may result in long-term effects on the metabolic health of the offspring, thus increasing the risk of diseases, such as obesity, diabetes, and cardiovascular diseases. Curcumin is a natural polyphenolic compound that has beneficial properties on metabolism. Accordingly, this study is intended to evaluate the effects of curcumin supplementation in pregnant and lactating female mice on the anthropometric, metabolic and molecular parameters of the offspring fed a hyperglycemic diet. The study was conducted with 24 male mice randomized into three groups: i) control group (SD) originating from dams fed a standard diet; ii) hyperglycemic group (HGD) originating from dams fed a hyperglycemic diet; iii) curcumin group (CUR) originating from dams fed a hyperglycemic diet and supplemented with curcumin in the pregnancy-lactation period. All offspring groups were fed a hyperglycemic diet for 12 weeks. Anthropometricand biochemical parameters were measured, as well as the expression of thermogenesis-associated markers in the interscapular brown and inguinal white adipose tissues. The results showed less weight gain in the CUR group, with a concomitant reduction in food consumption compared to the HGD group. Biochemical parameters indicated lower levels of total cholesterol, glucose, and insulin for the CUR group, in addition to improved glucose tolerance and insulin sensitivity. The molecular evaluation indicated increased mRNA expression levels of UCP1 and PRDM16 in the brown and white adipose tissues. It is concluded that curcumin supplementation in the pregnancy-lactation period in dams with diet-induced obesity may lead to improvements in the offspring's metabolic phenotype, even if they are submitted to an obesogenic environment, possibly via thermogenesis activation.


Asunto(s)
Curcumina , Animales , Femenino , Humanos , Masculino , Ratones , Embarazo , Tejido Adiposo/metabolismo , Curcumina/farmacología , Dieta Alta en Grasa , Glucosa/metabolismo , Lactancia , Obesidad/metabolismo , Termogénesis
10.
J Nutr Biochem ; 113: 109252, 2023 03.
Artículo en Inglés | MEDLINE | ID: mdl-36509338

RESUMEN

Obesity and metabolic disorders represent a significant global health problem and the gut microbiota plays an important role in modulating systemic homeostasis. Recent evidence shows that microbiota and its signaling pathways may affect the whole metabolism and the Renin-Angiotensin System (RAS), which in turn seems to modify microbiota. The present review aimed to investigate nutritional implications in the mechanistic link between the intestinal microbiome, renin-angiotensin system, and the development of obesity and metabolic syndrome components. A description of metabolic changes was obtained based on relevant scientific literature. The molecular and physiological mechanisms that impact the human microbiome were addressed, including the gut microbiota associated with obesity, diabetes, and hepatic steatosis. The RAS interaction signaling and modulation were analyzed. Strategies including the use of prebiotics, symbiotics, probiotics, and biotechnology may affect the gut microbiota and its impact on human health.


Asunto(s)
Microbioma Gastrointestinal , Síndrome Metabólico , Probióticos , Humanos , Síndrome Metabólico/metabolismo , Microbioma Gastrointestinal/fisiología , Sistema Renina-Angiotensina , Obesidad/metabolismo , Prebióticos
11.
Toxicon ; 221: 106965, 2023 Jan 01.
Artículo en Inglés | MEDLINE | ID: mdl-36370827

RESUMEN

This study investigated the antineoplastic effects of crotoxin isolated from snake venom of the South American Crotalus durissus terrificus in oral cancer cell lines and in an animal model of chemically induced oral cancer. We analyzed cell viability and death, clonogenic formation, DNA fragmentation, migration assay, and gene expression of MMP2, MMP9, COL1A1, and CASP3. In the animal model, after induction of oral cancer by 4-nitroquinoline-1-oxide carcinogen, mice were treated with crotoxin to investigate its effects on tumor development in tongue and oral mucosa. Crotoxin inhibited cell proliferation, viability, colony formation, and migration, favoring cell death. Furthermore, crotoxin increased caspase-3 expression, decreased Ki-67 protein and mRNA expression of MMP2, MMP9, and COL1A1. Mice treated with crotoxin at 10 µg/kg did not alter biochemical parameters total cholesterol, very-low-density lipoprotein, high-density lipoprotein, liver transaminases, glycemia, creatinine, and urea. Crotoxin treatment significantly reduced the frequency of oral squamous cell carcinoma lesions by 50%. Thus, this study highlights crotoxin as a promising chemotherapeutic substance, considering its effects on controlling the neoplastic cell population, reducing cell migration, and inhibiting tumor development. Clinical studies are necessary to understand better the impact of crotoxin as a potential adjuvant therapeutic agent for oral cancer patients.


Asunto(s)
Antineoplásicos , Venenos de Crotálidos , Crotoxina , Neoplasias de la Boca , Carcinoma de Células Escamosas de Cabeza y Cuello , Animales , Ratones , Antineoplásicos/farmacología , Venenos de Crotálidos/química , Crotalus , Crotoxina/farmacología , Metaloproteinasa 2 de la Matriz , Metaloproteinasa 9 de la Matriz , Neoplasias de la Boca/inducido químicamente , Neoplasias de la Boca/tratamiento farmacológico , Carcinoma de Células Escamosas de Cabeza y Cuello/inducido químicamente , Carcinoma de Células Escamosas de Cabeza y Cuello/tratamiento farmacológico
12.
Gene ; 851: 147041, 2023 Jan 30.
Artículo en Inglés | MEDLINE | ID: mdl-36375658

RESUMEN

Differences in the features of aggressiveness of non-melanoma skin cancer (NMSC) subtypes, between basal cell carcinoma (BCC) and squamous cell carcinoma (SCC) are relevant characteristics. Comparing the characteristics between NMSC subtypes might help identify molecules associated with cancer metastasis and invasion. Considering these facts, the current study aimed to identify a molecular target for inhibiting skin cancer metastasis and invasion. Proteomic analysis suggested that heat shock protein 90 kDa, alpha, class B member 1 (HSP90AB1), pentaxin (PTX3), caspase-14 (CASP14), S100, actin-1, and profilin were the primary targets related to metastasis and invasion. However, after a differential expression comparison between BCC and SCC, HSP90AB1 was identified as the best target to repress metastasis and invasion. Based on molecular docking results, gallic acid (GA) was selected to inhibit HSP90AB1. A specific Hsp90ab1 siRNA targeting was designed and compared to GA. Interestingly, GA was more efficient in silencing HSP90AB1 than siRNAhsp90ab1. Hence, our data suggest that HSP90AB1 is a crucial biomarker for identifying invasion and metastasis and that its inhibition may be a viable strategy for treating skin cancer.


Asunto(s)
Carcinoma Basocelular , Carcinoma de Células Escamosas , Neoplasias Cutáneas , Humanos , Proteínas de Choque Térmico , Ácido Gálico/farmacología , Proteómica , Simulación del Acoplamiento Molecular , Carcinoma Basocelular/metabolismo , Carcinoma de Células Escamosas/patología , Neoplasias Cutáneas/tratamiento farmacológico , Neoplasias Cutáneas/genética , Neoplasias Cutáneas/metabolismo , Proteínas HSP90 de Choque Térmico/genética
13.
Oral Dis ; 29(7): 2658-2666, 2023 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-35796645

RESUMEN

OBJECTIVE: Oral squamous cell carcinoma (OSCC) is one of the most common neoplasms worldwide. The current study aimed to identify potential biomarkers associated with OSCC survival. MATERIALS AND METHODS: Differentially expressed genes (DEGs) in atypical OSCC cases were identified using two public datasets: The Cancer Genome Atlas and the Gene Expression Omnibus database. Receiver operating characteristic (ROC) analysis was performed to identify the cutoff, and the candidate DEGs related to survival. Kaplan-Meier and Cox regression analysis using the categorized genes were employed to identify genes that impact the overall survival in OSCC. RESULTS: A total of 263 OSCC samples and 105 healthy tissues were used to identify 295 upregulated and 131 downregulated genes expressed only in non-smokers. ROC analyses identified 25 candidate genes associated with death. Survival analyses demonstrated that the following DEGs, namely CSTA, FGFR2, MMP19, OLR1, PCSK1, RAMP2, and CGB5, are potential OSCC prognostic factors. CONCLUSION: We found that CSTA, FGFR2, MMP19, OLR1, PCSK1, RAMP2, and CGB5 are associated with a low survival rate in OSCC. However, further studies are needed to validate our findings and facilitate the development of these factors as potential biomarkers for OSCC survival.


Asunto(s)
Carcinoma de Células Escamosas , Neoplasias de Cabeza y Cuello , Neoplasias de la Boca , Humanos , Carcinoma de Células Escamosas de Cabeza y Cuello/genética , Carcinoma de Células Escamosas/patología , Transcriptoma , Neoplasias de la Boca/metabolismo , Regulación Neoplásica de la Expresión Génica , Análisis de Supervivencia , Biomarcadores de Tumor/genética , Neoplasias de Cabeza y Cuello/genética , Pronóstico
14.
Arch Physiol Biochem ; 129(2): 449-459, 2023 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-33176505

RESUMEN

BACKGROUND: Diet macronutrient heterogeneity hinders animal studies' data extrapolation from metabolic disorders to human diseases. OBJECTIVE: The present study aimed to evaluate different fat-diet compositions' effect on inducing lipid/glucose metabolism alterations in mice. METHODS: Swiss male mice were fed for 12 weeks with five different diets: Standard Diet (ST), American Institute of Nutrition 93 for growth (AIN93G) high-butter/high-sugar (HBHS), high-lard/high-sugar (HLHS), and high-oil/high-sugar diet (soybean oil) (HOHS). Several parameters, such as serum biochemistry, histology, and liver mRNA expression, were accessed. RESULTS: The main findings revealed that the HLHS diet dramatically altered liver metabolism inducing hepatic steatosis and increased total cholesterol, triglycerides, VLDL, increasing liver CCAAT/enhancer binding protein (CEBP-α), Acetyl-CoA carboxylase (ACC) and Catalase (CAT) mRNA expression. Moreover, the HLHS diet increased glucose intolerance and reduced insulin sensitivity. CONCLUSIONS: High-fat/high-sugar diets are efficient to induce obesity and metabolic syndrome-associated alterations, and diets enriched with lard and sugar showed more effective results.


Asunto(s)
Síndrome Metabólico , Animales , Humanos , Masculino , Ratones , Dieta Alta en Grasa , Grasas de la Dieta/metabolismo , Hígado/metabolismo , Síndrome Metabólico/etiología , Síndrome Metabólico/metabolismo , Obesidad/etiología , Obesidad/metabolismo , ARN Mensajero/genética , ARN Mensajero/metabolismo , Azúcares/metabolismo
15.
Photodiagnosis Photodyn Ther ; 39: 102983, 2022 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-35772622

RESUMEN

Purpose This study aimed to compare the efficacy of Antimicrobial Photodynamic Therapy (aPDT) with 300 µmol/L of methylene blue and 8 µmol/L of curcumin on oral candidiasis patients with HNSCC undergoing treatment. Methods A two-arm, single-blind clinical trial was performed. Following verification for eligibility (n = 447), 108 patients were included in the study. The study consisted of a group that received aPDT with methylene blue (n = 57) and another that received aPDT with curcumin (n = 51). The patients rinsed their mouths with an aqueous solution of 300 µmol/L of methylene blue and 8 µmol/L of curcumin in four sessions, and then the lesion was scraped for the subsequent RT-qPCR. The primary outcome was that no cure was presented for oral candidiasis after treatment. The secondary result was reducing the number of sites affected by oral candidiasis. Results There was no difference in treatment failure evaluated by the necessity of drug prescription or Candida sp DNA quantification. However, clinically the methylene blue protocol reduced the number of infected anatomical sites compared to the curcumin protocol. Conclusion Methylene blue aPDT reduced the number of infected anatomical sites compared to curcumin.


Asunto(s)
Antiinfecciosos , Candidiasis Bucal , Curcumina , Neoplasias de Cabeza y Cuello , Fotoquimioterapia , Antibacterianos/uso terapéutico , Antiinfecciosos/uso terapéutico , Candidiasis Bucal/tratamiento farmacológico , Curcumina/uso terapéutico , Neoplasias de Cabeza y Cuello/tratamiento farmacológico , Humanos , Azul de Metileno/uso terapéutico , Fotoquimioterapia/métodos , Fármacos Fotosensibilizantes/uso terapéutico , Método Simple Ciego
16.
Lasers Med Sci ; 37(5): 2509-2516, 2022 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-35119554

RESUMEN

The aim of this study is to investigate the antineoplastic potential of photodynamic therapy (PDT) mediated by an aluminum-phthalocyanine chloride nanoemulsion (AlPc-NE), against an oral squamous cell carcinoma (OSCC) cell line in vitro. Both OSCC (SCC9) and A431 cell lines were studied in vitro. Four study groups were used: Group 1 (phosphate-buffered saline [PBS]), Group 2 (PBS + 28.3 J/cm2 irradiation), Group 3 (AlPc-NE alone), and Group 4 (AlPc-NE + 28.3 J/cm2 irradiation). To test the effect of PDT with AlPc-NE, cell viability, migration, and cell death assays were performed. Moreover, the expressions of Ki-67 and TP53 were evaluated using immunoassays. The results showed that PDT mediated by all AlPc-NE concentrations evaluated (i.e., 0.7, 0.35, and 0.17 nM AlPc) significantly reduced the viability of SCC9 cells. Migration and cell death assays also revealed that PDT with AlPc-NE significantly reduced the rate of migration and increased cell death compared to the control groups. In addition, it was found that PDT with AlPc-NE reduced Ki-67 and mutated TP53 immunoexpression. PDT with AlPc-NE is effective in reducing the viability and migration of SCC9. Moreover, PDT with AlPc-NE nanoemulsions reduces the cell proliferation and expression of mutant TP53.


Asunto(s)
Carcinoma de Células Escamosas , Neoplasias de la Boca , Nanopartículas , Compuestos Organometálicos , Fotoquimioterapia , Aluminio , Carcinoma de Células Escamosas/tratamiento farmacológico , Humanos , Isoindoles , Antígeno Ki-67 , Neoplasias de la Boca/tratamiento farmacológico , Compuestos Organometálicos/farmacología , Fotoquimioterapia/métodos , Fármacos Fotosensibilizantes/farmacología , Fármacos Fotosensibilizantes/uso terapéutico
17.
Curr Aging Sci ; 15(1): 37-48, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35139785

RESUMEN

AIMS: The present study aimed to develop and evaluate a new dairy by-product nutritional supplement with Buriti fruit to improve malnutrition in mice and elderly woman. BACKGROUND: Malnutrition is a prevalent problem in the elderly; therefore, oral dietary supplementation is an important strategy to reduce this health problem incidence. OBJECTIVE: The present study evaluated the effects of a low-cost food supplement, made from byproducts of the dairy and fruit industry in the Brazilian Cerrado (Buriti), on the nutritional status and on the recovery of the metabolic profile of malnourished animals and elderly women. METHODS: In the pre-clinical phase, Swiss mice were divided into six groups and subjected to malnutrition and renutrition. The clinical phase was carried out with 25 elderly women residing in a long-term institution, aged ≥ 65 years and with malnutrition or risk of malnutrition. RESULTS: The main results showed improvements in anthropometric parameters and an increase in serum albumin levels, in addition to lipid profile improvement in the preclinical phase and an increase in the red blood cells and hemoglobin in the clinical phase. CONCLUSION: The supplement based on Buriti was able to reverse malnutrition promoting improvements in anthropometric and biochemical parameters.


Asunto(s)
Arecaceae , Desnutrición , Anciano , Animales , Brasil/epidemiología , Suplementos Dietéticos , Femenino , Frutas , Humanos , Desnutrición/diagnóstico , Desnutrición/prevención & control , Ratones , Estado Nutricional
18.
Mol Biol Rep ; 49(4): 3225-3236, 2022 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-35066770

RESUMEN

BACKGROUND: Neutrophil extracellular traps (NETs) are a recently discovered neutrophil defense mechanism which modulates several inflammatory conditions contributing to metabolic profile alterations. Therefore, the present study aimed to evaluate the production of NETs in obese patients and mice, verifying the possible mechanisms associated with the release of NETs by the adipose tissue. METHODS AND RESULTS: The present study investigated NETs production in human adipose tissue and also showing the neutrophils using intravital microscopy in mouse epididymal adipose tissue. Blood and white adipose tissues were obtained from eutrophic and obese individuals and from mice. Lipid, glycemic and leukocyte profiles were evaluated, as well as the levels of NETs and its markers. Bioinformatics and proteomics analyses were performed and the identified key proteins were measured. The main findings showed that the inflammatory markers interleukin-8 (IL-8), heat shock protein 90 (HSP90) and the E1 heat shock protein family (HSPE1) can be modulated by the NETs levels in obesity. Obesity has also been associated with increased cholesterol, glucose intolerance, ionic calcium and NETs. We also observed an increase in catalase and a decreased superoxide dismutase activity. Bioinformatics and proteomics analyses revealed that IL-8, HSP90 and HSPE1 were associated with obesity, inflammation and NETs release. CONCLUSIONS: In conclusion, the present study shows an increase in NETs production during obesity associated with important inflammatory markers in adipose.


Asunto(s)
Trampas Extracelulares , Tejido Adiposo/metabolismo , Animales , Trampas Extracelulares/metabolismo , Humanos , Inflamación/metabolismo , Ratones , Neutrófilos/metabolismo , Obesidad/metabolismo
19.
Mini Rev Med Chem ; 22(10): 1438-1449, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-34819001

RESUMEN

The present article reviews the effects of the textile in the wound healing process, as well as the availability of these products in the market. A brief description of applications is given based on the literature obtained from searching the scientific databases, besides the data obtained from secondary sources, like books and congress proceedings. The historical context of the textiles used in wounds, their general characteristics, particularities in the healing process, and incorporation of new technologies are discussed. It was evidenced that the textiles and associated technologies might influence directly or indirectly the stimulation of collagen, cell migration, angiogenesis, and reduction of pro-inflammatory factors and fibroblasts. However, the mechanisms by which the textiles act in the healing process are not well established in the literature. The interaction among textile engineering, biotechnology, medicine, and pharmacology is essential for the improvement and development of new products with better efficiency and accessibility.


Asunto(s)
Textiles , Cicatrización de Heridas
20.
CNS Neurol Disord Drug Targets ; 20(9): 814-821, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-34852739

RESUMEN

Elevated peripheral expression of homocysteine (Hcy) is associated with an increased risk of coronary heart disease and stroke, diabetes, and cancer. It is also associated with cognitive impairment as it has been reported that high levels of Hcy cause cognitive dysfunction and memory deficit. Among several etiological factors that contribute to the pathogenesis of neurodegenerative diseases, including Alzheimer's disease (AD), Hcy seems to directly contribute to the generation of neurotoxicity factors. This study aims to hypothesize the molecular mechanism by which exercise can reduce the risk of neurological complications promoted by hyperhomocysteinemia (HHcy), and discuss how exercise could reduce the risk of developing AD by using bioinformatics network models. According to the genes network, there are connections between proteins and amino acids associated with Hcy, exercise, and AD. Studies have evidenced that exercise may be one of several processes by which acid nitric availability can be maximized in the human body, which is particularly important in reducing cell loss and tau pathology and, thereby, leading to a reduced risk of complications associated with HHcy and AD.


Asunto(s)
Enfermedad de Alzheimer/metabolismo , Ejercicio Físico/fisiología , Homocisteína/metabolismo , Hiperhomocisteinemia/metabolismo , Encéfalo/metabolismo , Disfunción Cognitiva/metabolismo , Biología Computacional , Humanos , Estrés Oxidativo
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA
...