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1.
Antioxidants (Basel) ; 13(5)2024 May 11.
Artículo en Inglés | MEDLINE | ID: mdl-38790696

RESUMEN

Preeclampsia, a serious and potentially life-threatening medical complication occurring during pregnancy, is characterized by hypertension and often accompanied by proteinuria and multiorgan dysfunction. It is classified into two subtypes based on the timing of diagnosis: early-onset (EO-PE) and late-onset preeclampsia (LO-PE). Despite being less severe and exhibiting distinct pathophysiological characteristics, LO-PE is more prevalent than EO-PE, although both conditions have a significant impact on placental health. Previous research indicates that different pathophysiological events within the placenta may contribute to the development of preeclampsia across multiple pathways. In our experimental study, we investigated markers of oxidative stress, ferroptosis, and lipid peroxidation pathways in placental tissue samples obtained from women with LO-PE (n = 68) compared to healthy control pregnant women (HC, n = 43). Through a comprehensive analysis, we observed an upregulation of specific molecules associated with these pathways, including NADPH oxidase 1 (NOX-1), NADPH oxidase 2 (NOX-2), transferrin receptor protein 1 (TFRC), arachidonate 5-lipoxygenase (ALOX-5), acyl-CoA synthetase long-chain family member 4 (ACSL-4), glutathione peroxidase 4 (GPX4) and malondialdehyde (MDA) in women with LO-PE. Furthermore, increased ferric tissue deposition (Fe3+) was observed in placenta samples stained with Perls' Prussian blue. The assessment involved gene and protein expression analyses conducted through RT-qPCR experiments and immunohistochemistry assays. Our findings underscore the heightened activation of inflammatory pathways in LO-PE compared to HC, highlighting the pathological mechanisms underlying this pregnancy disorder.

2.
Int J Mol Sci ; 25(4)2024 Feb 07.
Artículo en Inglés | MEDLINE | ID: mdl-38396708

RESUMEN

Preeclampsia (PE) is a serious hypertensive disorder affecting 4-5% of pregnancies globally, leading to maternal and perinatal morbidity and mortality and reducing life expectancy in surviving women post-gestation. Late-onset PE (LO-PE) is a clinical type of PE diagnosed after 34 weeks of gestation, being less severe than the early-onset PE (EO-PE) variant, although both entities have a notable impact on the placenta. Despite the fact that most studies have focused on EO-PE, LO-PE does not deserve less attention since its prevalence is much higher and little is known about the role of the placenta in this pathology. Via RT-qPCR and immunohistochemistry methods, we measured the gene and protein expressions of several macroautophagy markers in the chorionic villi of placentas from women who underwent LO-PE (n = 68) and compared them to normal pregnancies (n = 43). We observed a markedly distinct expression pattern, noticing a significant drop in NUP62 expression and a considerable rise in the gene and protein expressions of ULK1, ATG9A, LC3, ATG5, STX-17, and LAMP-1 in the placentas of women with LO-PE. A major induction of autophagic processes was found in the placental tissue of patients with LO-PE. Abnormal signaling expression of these molecular patterns in this condition aids in the understanding of the complexity of pathophysiology and proposes biomarkers for the clinical management of these patients.


Asunto(s)
Placenta , Preeclampsia , Embarazo , Femenino , Humanos , Placenta/metabolismo , Factores de Transcripción/metabolismo , Autofagia/genética , Preeclampsia/metabolismo , Estudios de Casos y Controles
3.
Antioxidants (Basel) ; 12(11)2023 Oct 26.
Artículo en Inglés | MEDLINE | ID: mdl-38001771

RESUMEN

Oxidative stress is a major cellular event that occurs in the placenta, fulfilling critical physiological roles in non-pathological pregnancies. However, exacerbated oxidative stress is a pivotal feature of different obstetric complications, like pre-eclampsia, fetal growth restriction, and other diseases. Compelling evidence supports the relevant role of diet during pregnancy, with pleiotropic consequences for maternal well-being. The present review aims to examine the complex background between oxidative stress and placental development and function in physiological conditions, also intending to understand the relationship between different dietary patterns and the human placenta, particularly how this could influence oxidative stress processes. The effects of Westernized diets (WDs) and high-fat diets (HFDs) rich in ultra-processed foods and different additives are compared with healthy patterns such as a Mediterranean diet (MedDiet) abundant in omega 3 polyunsaturated fatty acids, monounsaturated fatty acids, polyphenols, dietary fiber, and vitamins. Although multiple studies have focused on the role of specific nutrients, mostly in animal models and in vitro, further observational and intervention studies focusing on the placental structure and function in women with different dietary patterns should be conducted to understand the precise influence of diet on this organ.

4.
Biomolecules ; 13(11)2023 11 13.
Artículo en Inglés | MEDLINE | ID: mdl-38002326

RESUMEN

Pre-eclampsia is a harmful and potentially lethal medical condition during pregnancy clinically diagnosed by hypertension and commonly accompanied by proteinuria and multiorgan affections. According to the time of diagnosis, it is differentiated between early-onset (EO-PE) and late-onset preeclampsia (LO-PE). Despite being less dangerous and presenting distinct pathophysiological signatures, LO-PE has a greater prevalence than EO-PE, both having significant consequences on the placenta. Previous works have evidenced that exacerbated inflammation in this organ might play a potential pathogenic role in the development of pre-eclampsia, and there is some preliminary evidence that the hyperactivation of inflammasomes can be related to the altered immunoinflammatory responses observed in the placentas of these patients. However, the precise role of inflammasomes in the placentas of women with LO-PE remains to be fully understood. In this work, we have studied the gene and protein expression of the main components related to the canonical and non-canonical pathways of the inflammasome NLRP3 (NLRP3, ASC, caspase 1, caspase 5, caspase 8, interleukin 1ß, and interleukin 18) in the placental tissue of women with LO-PE. Our results show a marked increase in all these components in the placentas of women who have undergone LO-PE, suggesting that NLRP3 inflammasome plays a potentially pathophysiological role in the development of this entity. Future works should aim to evaluate possible translational approaches to this dysregulation in these patients.


Asunto(s)
Placenta , Preeclampsia , Humanos , Femenino , Embarazo , Placenta/metabolismo , Inflamasomas/metabolismo , Preeclampsia/metabolismo , Proteína con Dominio Pirina 3 de la Familia NLR/genética , Proteína con Dominio Pirina 3 de la Familia NLR/metabolismo , Inflamación
6.
Medicina (Kaunas) ; 59(10)2023 Sep 30.
Artículo en Inglés | MEDLINE | ID: mdl-37893470

RESUMEN

The RANK-RANKL-OPG system is a complex signaling pathway that plays a critical role in bone metabolism, mammary epithelial cell development, immune function, and cancer. RANKL is a ligand that binds to RANK, a receptor expressed on osteoclasts, dendritic cells, T cells, and other cells. RANKL signaling promotes osteoclast differentiation and activation, which leads to bone resorption. OPG is a decoy receptor that binds to RANKL and inhibits its signaling. In cancer cells, RANKL expression is often increased, which can lead to increased bone resorption and the development of bone metastases. RANKL-neutralizing antibodies, such as denosumab, have been shown to be effective in the treatment of skeletal-related events, including osteoporosis or bone metastases, and cancer. This review will provide a comprehensive overview of the functions of the RANK-RANKL-OPG system in bone metabolism, mammary epithelial cells, immune function, and cancer, together with the potential therapeutic implications of the RANK-RANKL pathway for cancer management.


Asunto(s)
Neoplasias Óseas , Resorción Ósea , Humanos , Receptor Activador del Factor Nuclear kappa-B/metabolismo , Osteoprotegerina , Ligando RANK , Osteoclastos , Neoplasias Óseas/secundario , Resorción Ósea/metabolismo , Homeostasis
7.
Microbiol Spectr ; 11(6): e0151723, 2023 Dec 12.
Artículo en Inglés | MEDLINE | ID: mdl-37698391

RESUMEN

IMPORTANCE: This study on bacteremic nosocomial pneumonia (bNP) demonstrates the importance of this condition both in patients undergoing and not undergoing mechanical ventilation. Staphylococcus aureus, Enterobacterales, and non-fermenting Gram-negative bacilli are all causative agents in ventilator-associated pneumonia (VAP) and hospital-acquired pneumonia (HAP), with a predominance of S. aureus in HAP and of Pseudomonas aeruginosa in VAP. Mortality in this condition is very high. Therefore, new therapeutic and preventive approaches should be sought.


Asunto(s)
Infección Hospitalaria , Neumonía Asociada a la Atención Médica , Neumonía Asociada al Ventilador , Humanos , Infección Hospitalaria/tratamiento farmacológico , Staphylococcus aureus , Antibacterianos/uso terapéutico , Neumonía Asociada a la Atención Médica/epidemiología , Neumonía Asociada a la Atención Médica/complicaciones , Neumonía Asociada a la Atención Médica/tratamiento farmacológico , Neumonía Asociada al Ventilador/epidemiología , Neumonía Asociada al Ventilador/tratamiento farmacológico , Neumonía Asociada al Ventilador/etiología
8.
J Pers Med ; 13(6)2023 Jun 05.
Artículo en Inglés | MEDLINE | ID: mdl-37373945

RESUMEN

Chronic venous disease (CVD) is a common condition that affects the veins in the lower limbs, resulting in a variety of symptoms, such as swelling, pain, and varicose veins (VVs). The plenty hormonal, hemodynamic and mechanical changes occurred in pregnancy make women especially vulnerable to suffer from this condition in this period. Previous works have identified that CVD is associated with an increased inflammatory milieu and significant damage in maternofetal tissues, such as the umbilical cord. However, the inflammatory status of this structure in these patients has not been studied yet. Thus, the aim of the present study was to examine gene and protein expression of a set of inflammatory markers-Allograft inflammatory factor 1 (AIF-1), the proinflammatory cytokines interleukin 12A (IL-12A) and IL-18 and the anti-inflammatory product IL-10-in the umbilical cord of women with CVD during pregnancy (N = 62) and healthy pregnant women (HC; N = 52) by the use of real time qPCR and immunohistochemistry (IHC). Our results demonstrate that the umbilical cord tissue from CVD women exhibit an increased expression of AIF-1, IL-12A and IL-18 along with a decrease in IL-10. Therefore, our study suggests an inflammatory status of this structure related to CVD. Further studies should be conducted to evaluate the expression of other inflammatory markers, as well as to analyze the maternofetal impact of these findings.

9.
Biology (Basel) ; 12(5)2023 May 09.
Artículo en Inglés | MEDLINE | ID: mdl-37237507

RESUMEN

Macrophages are a type of immune cell distributed throughout all tissues of an organism. Allograft inflammatory factor 1 (AIF1) is a calcium-binding protein linked to the activation of macrophages. AIF1 is a key intracellular signaling molecule that participates in phagocytosis, membrane ruffling and F-actin polymerization. Moreover, it has several cell type-specific functions. AIF1 plays important roles in the development of several diseases: kidney disease, rheumatoid arthritis, cancer, cardiovascular diseases, metabolic diseases and neurological disorders, and in transplants. In this review, we present a comprehensive review of the known structure, functions and role of AIF1 in inflammatory diseases.

10.
Lung ; 201(3): 275-286, 2023 06.
Artículo en Inglés | MEDLINE | ID: mdl-37160771

RESUMEN

PURPOSE: Chronic cough (cough that persists for ≥ 8 weeks) can cause a range of physical symptoms and psychosocial effects that significantly impair patients' quality of life. Refractory chronic cough (RCC) and unexplained chronic cough (UCC) are challenging to diagnose and manage, with substantial economic implications for healthcare systems. METHODS: This retrospective multicenter non-interventional study aimed to characterize the profile and health resource consumption of patients with RCC or UCC who attended outpatient clinics at Spanish hospitals. Data were collected from medical records of patients with RCC or UCC for up to 3 years before study inclusion. RESULTS: The patient cohort (n = 196) was representative of the chronic cough population (77.6% female, mean age 58.5 years). Two-thirds of patients (n = 126) had RCC. The most frequently visited doctors were pulmonologists (93.4% of patients) and primary care physicians (78.6%), with a mean of 5 visits per patient over three years' observation. The most common diagnostic tests were chest x-ray (83.7%) and spirometry with bronchodilation (77.0%). The most commonly prescribed treatments were proton pump inhibitors (79.6%) and respiratory medications (87.8%). Antibiotics were prescribed empirically to 56 (28.6%) patients. Differences between RCC or UCC groups related mainly to approaches used to manage cough-associated conditions (gastroesophageal reflux disease, asthma) in patients with RCC. CONCLUSION: RCC and UCC are responsible for high health resource utilization in Spanish hospitals. Specific treatments targeting the pathological processes driving chronic cough may provide opportunities to reduce the associated burden for patients and healthcare systems.


Asunto(s)
Carcinoma de Células Renales , Neoplasias Renales , Humanos , Femenino , Persona de Mediana Edad , Masculino , Tos/diagnóstico , Tos/etiología , Tos/terapia , España/epidemiología , Pacientes Ambulatorios , Calidad de Vida , Instituciones de Atención Ambulatoria , Hospitales , Enfermedad Crónica
11.
Int J Mol Sci ; 24(9)2023 May 07.
Artículo en Inglés | MEDLINE | ID: mdl-37176102

RESUMEN

Breast cancer is one of the most common malignancies worldwide and the most common form of cancer in women. A large proportion of patients begin with localized disease and undergo treatment with curative intent, while another large proportion of patients debuts with disseminated metastatic disease. In the last subgroup of patients, the prognosis in recent years has changed radically, given the existence of different targeted therapies thanks to the discovery of different biomarkers. Serological, histological, and genetic biomarkers have demonstrated their usefulness in the initial diagnosis, in the follow-up to detect relapses, to guide targeted treatment, and to stratify the prognosis of the most aggressive tumors in those with breast cancer. Molecular markers are currently the basis for the diagnosis of metastatic disease, given the wide variety of chemotherapy regions and existing therapies. These markers have been a real revolution in the therapeutic arsenal for breast cancer, and their diagnostic validity allows the classification of tumors with higher rates of relapse, aggressiveness, and mortality. In this sense, the existence of therapies targeting different molecular alterations causes a series of changes in tumor biology that can be assessed throughout the course of the disease to provide information on the underlying pathophysiology of metastatic disease, which allows us to broaden our knowledge of the different mechanisms of tissue invasion. Therefore, the aim of the present article is to review the clinical, diagnostic, predictive, prognostic utility and limitations of the main biomarkers available and under development in metastatic breast cancer.


Asunto(s)
Neoplasias de la Mama , Humanos , Femenino , Neoplasias de la Mama/patología , Biomarcadores de Tumor/genética , Recurrencia Local de Neoplasia
12.
BMJ Open ; 11(12): e053854, 2021 12 16.
Artículo en Inglés | MEDLINE | ID: mdl-34916324

RESUMEN

OBJECTIVES: Bronchial thermoplasty (BT) is a device-based treatment for subjects ≥18 years with severe asthma not well controlled with inhaled corticosteroids and long-acting beta-agonists. The Bronchial Thermoplasty Global Registry (BTGR) collected real-world data on subjects undergoing this procedure. DESIGN: The BTGR is an all-comer, prospective, open-label, multicentre study enrolling adult subjects indicated for and treated with BT. SETTING: Eighteen centres in Spain, Italy, Germany, the UK, the Netherlands, the Czech Republic, South Africa and Australia PARTICIPANTS: One hundred fifty-seven subjects aged 18 years and older who were scheduled to undergo BT treatment for asthma. Subjects diagnosed with other medical conditions which, in the investigator's opinion, made them inappropriate for BT treatment were excluded. PRIMARY AND SECONDARY OUTCOME MEASURES: Baseline characteristics collected included demographics, Asthma Quality of Life Questionnaire (AQLQ), Asthma Control Test (ACT), medication usage, forced expiratory volume in one second and forced vital capacity, medical history, comorbidities and 12-month baseline recall data (severe exacerbations (SE) and healthcare utilisation). SE incidence and healthcare utilisation were summarised at 1 and 2 years post-BT. RESULTS: Subjects' baseline characteristics were representative of persons with severe asthma. A comparison of the proportion of subjects experiencing events during the 12 months prior to BT to the 2-year follow-up showed a reduction in SE (90.3% vs 56.1%, p<0.0001), emergency room visits (53.8% vs 25.5%, p<0.0001) and hospitalisations (42.9% vs 23.5 %, p=0.0019). Reductions in asthma maintenance medication dosage were also observed. AQLQ and ACT scores improved from 3.26 and 11.18 at baseline to 4.39 and 15.54 at 2 years, respectively (p<0.0001 for both AQLQ and ACT). CONCLUSIONS: The BTGR demonstrates sustained improvement in clinical outcomes and reduction in asthma medication usage 2 years after BT in a real-world population. This is consistent with results from other BT randomised controlled trials and registries and further supports improvement in asthma control after BT. TRIAL REGISTRATION NUMBER: NCT02104856.


Asunto(s)
Asma , Termoplastia Bronquial , Adolescente , Adulto , Asma/tratamiento farmacológico , Asma/cirugía , Termoplastia Bronquial/métodos , Humanos , Estudios Prospectivos , Calidad de Vida , Sistema de Registros , Resultado del Tratamiento
13.
Rev. chil. nutr ; 48(4)ago. 2021.
Artículo en Español | LILACS-Express | LILACS | ID: biblio-1388509

RESUMEN

RESUMEN Los métodos de conservación de alimentos no-térmicos han generado un considerable interés en la industria alimentaria como potencial alternativo a los métodos tradicionales de procesamiento. Uno de los métodos no-térmicos más estudiados es el de campos eléctricos pulsados o PEF (Pulsed Electric Fields). La aplicación de PEF en el procesamiento de alimentos permite limitar la exposición a altas temperaturas y reducir la necesidad de aditivos alimentarios. En PEF, se expone al alimento a pulsos eléctricos generando poros en la membrana celular, este fenómeno se le conoce como electroporación. La electroporación promueve la inactivación de organismos patógenos, reduce la actividad enzimática, favorece la transferencia de masa, mantención de color, sabor y contenido de compuestos antioxidantes, mejora la eficiencia en el procesamiento de alimentos y mantiene de cualidades organolépticas que son atractivas tanto para el consumidor como también para la industria. Los antioxidantes son sustancias capaces de proteger a las células de los radicales libres. La acción de los antioxidantes es de interés tanto del punto de vista sanitario, como industrial. Existe abundante evidencia que asocia el consumo de antioxidantes como factor protector ante enfermedades. Por otro lado, los antioxidantes cumplen un rol importante en la duración de los alimentos ya que actúan como conservantes, prolongando su vida útil. La utilización de PEF, respecto a otras tecnologías para el procesamiento de alimentos, ha demostrado un aumento en la extracción, menor pérdida por temperatura y una mayor disponibilidad de compuestos de interés, incluidos antioxidantes.


ABSTRACT Non-thermal food preservation methods have gained considerable interest in the food industry as a potential alternative to traditional processing methods. One of the most studied non-thermal methods is Pulsed Electric Fields (PEF). The application of PEF in food processing allows limiting exposure to high temperatures and reducing the need for food additives. In PEF, food is exposed to electrical pulses generating pores in the cell membrane, this phenomenon is known as electroporation. Electroporation promotes the inactivation of pathogenic organisms, reduces enzyme activity, favors mass transfer, maintains color, flavor and antioxidant compound content, improves food processing efficiency and maintains organoleptic qualities that are attractive to both the consumer and the industry. Antioxidants are substances capable of protecting cells from free radicals. The action of antioxidants is of interest both from a health and industrial point of view. There is abundant evidence that associates the consumption of antioxidants as a protective factor against diseases. On the other hand, antioxidants play an important role in the shelf life of foods as they act as preservatives, prolonging their shelf life. The use of PEF, compared to other food processing technologies, has shown an increase in extraction, lower temperature loss and greater availability of compounds of interest, including antioxidants.

14.
J Food Sci Technol ; 58(4): 1470-1479, 2021 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-33746275

RESUMEN

Physalis peruviana L. fruits are rich in bioactive compounds with health benefits. Processing of physalis into pulp with further dehydration has been proposed as a method to increase shelf life and preserve bioactive compounds. Here, the effect of three drying methods on the physico-chemical properties, color, antioxidant capacity, tocopherol and fatty acids content of physalis pulp thin layers were evaluated. The radical scavenging activity showed higher antioxidant activity at high temperatures rather than at low temperatures. Both, DPPH and ORAC assay showed a high antioxidant capacity of the physalis pulp. Chromatic parameters as well as Chroma and Hue angle were affected by drying temperature, which contributed to the discoloring of physalis pulp during this process. Based on these results, both convective drying and infrared drying at 80 °C were proved to be viable drying options for physalis pulp.

15.
ERJ Open Res ; 7(1)2021 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-33569504

RESUMEN

The clinical course of lung transplantation (LT) is diverse: some patients present chronic lung allograft dysfunction (CLAD) and progressive decline in pulmonary function, but others maintain normal spirometric values and active lives. OBJECTIVES: The aim of this study was to elucidate whether long-term LT survivors with normal spirometry achieve normal exercise capacity, and to identify predictive factors of exercise capacity. METHODS: This was a cross-sectional multicentre study, where bilateral LT recipients who survived at least 10 years after LT, with normal spirometry, no diagnosis of CLAD and modified Medical Research Council dyspnoea degree ≤2 underwent cardiopulmonary exercise testing (CPET). RESULTS: 28 LT recipients were included with a mean±sd age of 48.7±13.6 years. Oxygen uptake (V' O2 ) had a mean±sd value of 21.49±6.68 mL·kg-1·min-1 (75.24±15.6%) and the anaerobic threshold was reached at 48.6±10.1% of the V' O2max predicted. The mean±sd heart rate reserve at peak exercise was 17.56±13.6%. The oxygen pulse increased during exercise and was within normal values at 90.5±19.4%. The respiratory exchange ratio exceeded 1.19 at maximum exercise. The median (25-75th percentile) EuroQol-5D score was 1 (0.95-1), indicating a good quality of life. The median (25-75th percentile) International Physical Activity Questionnaire score was 5497 (4007-9832) MET-min·week-1 with 89% of patients reporting more than 1500 MET-min·week-1. In the multivariate regression models, age, sex and diffusing capacity of the lung for carbon monoxide remained significantly associated with V' O2max (mL·kg-1·min-1); haemoglobin and forced expiratory volume in 1 s were significantly associated with maximum work rate (watts), after adjusting for confounders. CONCLUSION: We report for the first time near-normal peak V' O2 values during CPET and normal exercise capacity in long-term LT recipients without CLAD.

16.
Respir Res ; 21(1): 320, 2020 Dec 02.
Artículo en Inglés | MEDLINE | ID: mdl-33267892

RESUMEN

BACKGROUND: The disposable bronchoscope is an excellent alternative to face the problem of SARS-CoV-2 and other cross infections, but the bronchoscopist's perception of its quality has not been evaluated. METHODS: To evaluate the quality of the Ambu-aScope4 disposable bronchoscope, we carried out a cross-sectional study in 21 Spanish pulmonology services. We use a standardized questionnaire completed by the bronchoscopists at the end of each bronchoscopy. The variables were described with absolute and relative frequencies, measures of central tendency and dispersion depending on their nature. The existence of learning curves was evaluated by CUSUM analysis. RESULTS: The most frequent indications in 300 included bronchoscopies was bronchial aspiration in 69.3% and the median duration of these was 9.1 min. The route of entry was nasal in 47.2% and oral in 34.1%. The average score for ease of use, image, and aspiration quality was 80/100. All the planned techniques were performed in 94.9% and the bronchoscopist was satisfied in 96.6% of the bronchoscopies. They highlighted the portability and immediacy of the aScope4TM to start the procedure in 99.3%, the possibility of taking and storing images in 99.3%. The CUSUM analysis showed average scores > 70/100 from the first procedure and from the 9th procedure more than 80% of the scores exceeded the 80/100 score. CONCLUSIONS: The aScope4™ scored well for ease of use, imaging, and aspiration. We found a learning curve with excellent scores from the 9th procedure. Bronchoscopists highlighted its portability, immediacy of use and the possibility of taking and storing images.


Asunto(s)
Actitud del Personal de Salud , Broncoscopios , Broncoscopía/instrumentación , Equipos Desechables , Conocimientos, Actitudes y Práctica en Salud , Neumólogos , Competencia Clínica , Estudios Transversales , Diseño de Equipo , Encuestas de Atención de la Salud , Humanos , Curva de Aprendizaje , Estudios Prospectivos , España
17.
Appl Physiol Nutr Metab ; 45(12): 1368-1376, 2020 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-32585124

RESUMEN

Chronic high-fat diet feeding is associated with obesity and accumulation of fat in the liver, leading to the development of insulin resistance and nonalcoholic fatty liver disease. This condition is characterized by the presence of a high number of intrahepatic lipid droplets (LDs), with changes in the perilipin pattern covering them. This work aimed to describe the distribution of perilipin (Plin) 2, an LD-associated protein involved in neutral lipid storage, and Plin5, which favors lipid oxidation in LD, and to evaluate lipid peroxidation through live-cell visualization using the lipophilic fluorescent probe C11-BODIPY581/591 in fresh hepatocytes isolated from mice fed a high-fat diet (HFD). Male C57BL/6J adult mice were divided into control and HFD groups and fed with a control diet (10% fat, 20% protein, and 70% carbohydrates) or an HFD (60% fat, 20% protein, and 20% carbohydrates) for 8 weeks. The animals fed the HFD showed a significant increase of Plin2 in LD of hepatocytes. LD from HFD-fed mice have a stronger lipid peroxidation level than control hepatocytes. These data provide evidence that obesity status is accompanied by a higher degree of lipid peroxidation in hepatocytes, both in the cytoplasm and in the fats stored inside the LD. Novelty Our study shows that lipid droplets from isolated hepatocytes in HFD-fed mice have a stronger lipid peroxidation level than control hepatocytes. C11-BODIPY581/591 is a useful tool to measure the initial level of intracellular lipid peroxidation in single isolated hepatocytes. Perilipins pattern changes with HFD feeding, showing an increase of Plin2 covering lipid droplets.


Asunto(s)
Hepatocitos/metabolismo , Gotas Lipídicas/metabolismo , Peroxidación de Lípido , Obesidad/metabolismo , Perilipina-2/metabolismo , Animales , Dieta Alta en Grasa , Metabolismo de los Lípidos , Hígado/metabolismo , Masculino , Ratones Endogámicos C57BL
18.
Nutrients ; 12(3)2020 Mar 05.
Artículo en Inglés | MEDLINE | ID: mdl-32151028

RESUMEN

A chronic high-fat diet (HFD) produces obesity, leading to pathological consequences in the liver and skeletal muscle. The fat in the liver leads to accumulation of a large number of intrahepatic lipid droplets (LD), which are susceptible to oxidation. Obesity also affects skeletal muscle, increasing LD and producing insulin signaling impairment. Physalis peruviana L. (PP) (Solanaceae) is rich in peruvioses and has high antioxidant activity. We assessed the ability of PP to enhance insulin-dependent glucose uptake in skeletal muscle and the capacity to prevent both inflammation and lipoperoxidation in the liver of diet-induced obese mice. Male C57BL/6J mice were divided into groups and fed for eight weeks: control diet (C; 10% fat, 20% protein, 70% carbohydrates); C + PP (300 mg/kg/day); HFD (60% fat, 20% protein, 20% carbohydrates); and HFD + PP. Results suggest that PP reduces the intracellular lipoperoxidation level and the size of LD in both isolated hepatocytes and skeletal muscle fibers. PP also promotes insulin-dependent skeletal muscle glucose uptake. In conclusion, daily consumption of 300 mg/kg of fresh pulp of PP could be a novel strategy to prevent the hepatic lipoperoxidation and insulin resistance induced by obesity.


Asunto(s)
Hepatitis Animal/etiología , Hepatitis Animal/metabolismo , Resistencia a la Insulina , Músculo Esquelético/efectos de los fármacos , Músculo Esquelético/metabolismo , Obesidad/complicaciones , Physalis/química , Extractos Vegetales/farmacología , Tejido Adiposo/metabolismo , Animales , Biomarcadores , Peso Corporal , Dieta Alta en Grasa , Modelos Animales de Enfermedad , Frutas/química , Prueba de Tolerancia a la Glucosa , Hepatitis Animal/patología , Hepatitis Animal/prevención & control , Mediadores de Inflamación/metabolismo , Insulina/metabolismo , Peroxidación de Lípido/efectos de los fármacos , Masculino , Ratones , Obesidad/etiología , Obesidad/metabolismo , Extractos Vegetales/química , Sustancias Protectoras/química , Sustancias Protectoras/farmacología
19.
J Sci Food Agric ; 100(12): 4335-4346, 2020 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-32198760

RESUMEN

Goldenberry is a wild fruit that has been widely used for centuries, mainly in folk medicine. Most studies of goldenberry have focused on the fruit, but new research has studied its byproducts, which were considered to be waste until recently. The main objective of our study was to systematize the published information regarding the composition of goldenberry byproducts (calyces, leaves, seeds, and pomace) and their effects on biological systems. Goldenberry byproducts contain minerals, amino acids, withanolides, flavonoids, and essential fatty acids, thus representing good sources of these compounds. Some of their major biological effects include anti-inflammatory, antioxidant, antidiabetic, and antiproliferative effects. Information regarding their toxicity is also presented here. To determine the optimal dosage, further safety studies would be recommended to ensure the best health benefits of these compounds. The available evidence has demonstrated the nutritional value of different byproducts of goldenberry, suggesting them to be potential candidates for use in the cosmetic industry, in the preparation of functional foods, and in phytomedicine for the prevention and adjuvant treatment of some diseases. © 2020 Society of Chemical Industry.


Asunto(s)
Physalis/química , Extractos Vegetales/química , Aminoácidos/química , Antioxidantes/química , Frutas/química , Alimentos Funcionales/análisis , Valor Nutritivo , Semillas/química
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