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1.
Osteoporos Int ; 2024 Oct 11.
Artículo en Inglés | MEDLINE | ID: mdl-39392521

RESUMEN

Fragility fractures are a major problem in our aging society leading to early death and loss of independence for activities of daily living. Physical activity in a long-term follow-up of Portuguese women over 50 years with a fragility fracture was associated with better physical function and quality of life. PURPOSE: To evaluate the long-term impact of physical activity on physical function and health-related quality of life (HRQoL) in women ≥ 50 years old who suffered a fragility fracture. METHODS: We evaluated the association of physical activity with physical function and HRQoL in women ≥ 50 years old who self-reported at least one low-impact fracture ≥ 40 years old from the EpiDoC cohort, a population-based cohort. Self-reported data regarding sociodemographics, clinical, and lifestyle behaviors were collected through a semi-structured questionnaire at baseline during a face-to-face clinical interview. During a long-term follow-up, a phone interview was conducted to evaluate physical activity (using a non-validated scale developed for the EpiDoC study), physical function (Health Assessment Questionnaire), and HRQoL (European Quality of Life - 5 Dimension). Women were divided into three groups according to the frequency of physical activity (non-frequent = 0 times/week, frequent = 1-2 times/week, or very frequent = ≥ 3 times/week). The association of physical activity frequency (non-frequent, frequent, and very frequent) with physical function and HRQoL over time was assessed through linear mixed models considering varying intercepts for each woman. RESULTS: This study followed 323 post-fracture women, during a mean follow-up of 3.9 ± 3.5 years. Frequent (ß = - 0.1419 [- 0.2783, - 0.0064]) and very frequent (ß = - 0.1908 [- 0.2944, - 0.0881]) physical exercise were associated with improvements in physical function relative to non-frequent physical exercise adjusted for BMI, multimorbidity, hospitalizations, alcohol and smoking habits, and the number of fragility fractures at baseline. As for HRQoL, a positive association was found for exercise frequency, specifically frequent (ß = 0.1305 [0.0646, 0.1958]) and very frequent (ß = 0.1354 [0.0856, 0.1859]) suggesting improvements for HRQoL, in this follow-up period. CONCLUSIONS: These findings based on longitudinal data with long-term follow-up suggest that regular physical activity is associated with better function and HRQol among middle-aged and older post-fracture osteoporotic Portuguese women.

2.
Sci Signal ; 17(857): eadn4694, 2024 10 08.
Artículo en Inglés | MEDLINE | ID: mdl-39378285

RESUMEN

The development of new analgesics has been challenging. Candidate drugs often have limited clinical utility due to side effects that arise because many drug targets are involved in signaling pathways other than pain transduction. Here, we explored the potential of targeting protein-protein interactions (PPIs) that mediate pain signaling as an approach to developing drugs to treat chronic pain. We reviewed the approaches used to identify small molecules and peptide modulators of PPIs and their ability to decrease pain-like behaviors in rodent animal models. We analyzed data from rodent and human sensory nerve tissues to build associated signaling networks and assessed both validated and potential interactions and the structures of the interacting domains that could inform the design of synthetic peptides and small molecules. This resource identifies PPIs that could be explored for the development of new analgesics, particularly between scaffolding proteins and receptors for various growth factors and neurotransmitters, as well as ion channels and other enzymes. Targeting the adaptor function of CBL by blocking interactions between its proline-rich carboxyl-terminal domain and its SH3-domain-containing protein partners, such as GRB2, could disrupt endosomal signaling induced by pain-associated growth factors. This approach would leave intact its E3-ligase functions, which are mediated by other domains and are critical for other cellular functions. This potential of PPI modulators to be more selective may mitigate side effects and improve the clinical management of pain.


Asunto(s)
Analgésicos , Transducción de Señal , Humanos , Animales , Analgésicos/farmacología , Analgésicos/química , Transducción de Señal/efectos de los fármacos , Mapas de Interacción de Proteínas/efectos de los fármacos , Dolor Crónico/tratamiento farmacológico , Dolor Crónico/metabolismo , Dolor/metabolismo , Dolor/tratamiento farmacológico
3.
Domest Anim Endocrinol ; 90: 106890, 2024 Sep 19.
Artículo en Inglés | MEDLINE | ID: mdl-39366130

RESUMEN

This study evaluated the efficiency of in vitro culture of preantral follicles (PAF) in a commonly used medium for mesenchymal stem cell (MSC) culture. Parameters assessed included follicle survival, growth, stromal cell density, levels of reduced thiols and reactive oxygen species, epigenetic changes, cell apoptosis, and mRNA abundance. Caprine ovarian tissues were cultured for 1 or 7 days in either PAF or MSC-common media, with uncultured tissues serving as controls. The MSC medium exhibited increased follicular survival and growth and remodeled stromal density potentially through the regulation of oxidative stress and epigenetic changes compared to the PAF medium. In conclusion, our results highlight the importance of the MSC medium in enhancing follicular survival and growth, changing the stromal cell density, as well as in regulating the medium oxidative stress and epigenetic changes during the in vitro culture of caprine PAF.

5.
J Nutr Metab ; 2024: 6102611, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-39364430

RESUMEN

Background: Benfotiamine, a synthetic analog of thiamine, offers greater bioavailability compared to other thiamine salts and increases thiamine stores upon oral intake. Thiamine is essential for energy metabolism. This study aimed to evaluate the effects of oral benfotiamine supplementation on energy metabolism, particularly the Krebs cycle function, in the muscle of endurance-trained mice, and to assess its impact on endurance performance. Methods: Twenty-five mice were randomly assigned to four groups: a standard diet with sedentary behavior (Sta-Sed), a benfotiamine-supplemented diet with sedentary behavior (Ben-Sed), a standard diet with swimming training (Sta-Tr), and a benfotiamine-supplemented diet with swimming training (Ben-Tr). The trained groups underwent five weekly swimming sessions for six weeks, followed by an exhaustive test. Thiamine and its esters were measured in erythrocytes and gastrocnemius muscle. Gene expression of pyruvate dehydrogenase (PDHa) and alpha-ketoglutarate dehydrogenase (OGDH), along with levels of pyruvic, lactic, and hydroxybutyric acids in muscle, was analyzed. Results: The benfotiamine-supplemented groups had higher thiamine levels in erythrocytes and muscles compared to the standard-diet groups. No differences were observed in PDHa and OGDH gene expression. The Ben-Tr group exhibited increased muscle lactic acid levels and a higher lactic acid to pyruvic acid ratio compared to the sedentary groups. Hydroxybutyric acid levels were also elevated in the Ben-Tr group. No significant differences in exhaustive test duration were found between the groups. Conclusion: Benfotiamine supplementation increases thiamine levels in erythrocytes and muscle but does not affect the gene expression of thiamine-dependent enzymes. Although it alters energy metabolism in trained muscle, it does not enhance endurance performance in mice.

6.
J Med Chem ; 2024 Oct 04.
Artículo en Inglés | MEDLINE | ID: mdl-39365941

RESUMEN

A synthetic route to trans-A2B-corroles combining the macrocyclic core with a hydrazone moiety, based on the reactivity of azoalkenes toward dipyrromethanes, has been established with the aim of developing a new class of photosensitizers for photodynamic therapy of lung cancer. The study of the photophysical properties of the novel macrocycles allowed the identification of photosensitizers with absorption within the phototherapeutic window and high singlet oxygen quantum yield. Relevant structure-photodynamic activity correlations were established by studying the new corroles-based photodynamic therapy (PDT) in human lung cancer cell lines (A549 and H1299). The methyl-hydrazone corroles were more active than phenyl-hydrazone corroles, with the N-Boc and N-Ts groups being key structural features to ensure high activity. The lead photosensitizers, with IC50 values below 100 nM and no cytotoxicity per se, were significantly more active than 5,10,15-triphenylcorrole, showing that the presence of the hydrazone functional group has a strong influence on PDT activity.

7.
Endeavour ; 48(3): 100953, 2024 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-39353260

RESUMEN

In the second half of the nineteenth century gardening flourished in Portugal's public sphere, having considerably expanded beyond the private realms of palaces and villas. Envisioned as a sophisticated branch of knowledge, horticulture became a hub for citizen science, commercial activities, public education, and civic events. This was a context that fostered and advanced women's involvement and status as gardeners, horticulturists, and educators, a development influenced by popular Portuguese perceptions of women as protectors. The Royal Society of Horticulture of Portugal (founded in Lisbon as "National" in 1898, decreed "Royal" in 1900), instantiated this enmeshment of perception with status by designating women members as 'Lady Guardians' while promoting their participation, especially as competitors and jurists in the society's flower exhibitions. The women of the society offer a window into the more general identities and professional statuses of women horticulturalists as 'guardians' in a generalized sense: they included landowners, writers, gardeners, and family business owners, with many assuming greater responsibility in widowhood. At a time when women's participation in science was highly constricted, horticulture as a field, and the Royal Society of Horticulture as its premier institution, constituted a remarkable opportunity for women to be publicly engaged and recognized for their expertise as amateur botanists alongside their male counterparts. This article's analysis demonstrates that women horticulturalists in Portugal were a quite heterogenous group, consisting of women from the highest ranks of the nobility, participating alongside women from further social ranks, inclusive of the aristocracy, bourgeoisie, and urban middle classes. Their participation in the society not only afforded them opportunities locally and civically, but also internationally, as will be illustrated by a few careers that reflect how education, travels, and professional engagement demonstrated the broad reach of Portuguese women's horticultural activities.


Asunto(s)
Jardinería , Portugal , Humanos , Historia del Siglo XIX , Femenino , Jardinería/historia , Historia del Siglo XX
8.
J Cancer Educ ; 2024 Oct 18.
Artículo en Inglés | MEDLINE | ID: mdl-39422816

RESUMEN

Human papillomavirus (HPV) infection is implicated in causing several types of cancer, including cervical cancer. In Brazil, the quadrivalent HPV vaccine is provided free of charge for children between the ages of 9 and 14. Nevertheless, the vaccination coverage rate has remained below 60% since its implementation in 2014. This study aimed (i) to assess the knowledge of parents/guardians on HPV infection and vaccine prophylaxis and (ii) to test the association between having a "higher degree of knowledge" (HDK) and the sociodemographic characteristics. A total of 388 parents/guardians of children of vaccination age were enrolled. Questions assessing sociodemographic characteristics, knowledge, and attitudes toward HPV infection and vaccination were administered to participants via a self-answered questionnaire. Questionnaires of 343 participants were considered for analysis. Participants who answered at least 70% of the questions correctly were classified as presenting HDK. Multivariate logistic regression analysis was used to calculate odds ratios (ORs) and 95% confidence intervals (95% CIs) for the associations between population characteristics and HDK. This study occurred prior to the COVID-19 pandemic; thus, the pandemic was not considered in our analysis. A total of 212 (61.8%) participants showed HDK. Participants who were male (OR = 0.39; 95% CI = 0.22, 0.70) and lived in larger households (OR = 0.48; 95% CI = 0.25, 0.95) were less likely to present HDK. Participants who reported having an acquaintance with prior/concurrent HPV infection were more likely to have HDK (OR = 3.78; 95% CI = 2.02, 7.05). These findings suggest the importance of developing novel strategies for raising parental awareness of HPV, particularly targeting males.

9.
Pharmaceuticals (Basel) ; 17(9)2024 Sep 04.
Artículo en Inglés | MEDLINE | ID: mdl-39338331

RESUMEN

The efficacy of pregabalin in pain treatment has led to the search for new formulations for its use through different routes of administration. This study aimed to prepare, characterize, and evaluate the cytotoxicity of pregabalin (PG) gels for topical application in the oral cavity. Solutions with three different concentrations of PG were prepared and added to a 1.0% carbopol gel base. Thermal analyses (TG and DSC) and FTIR were performed on the gel and pure pregabalin. Stability (preliminary and accelerated) and rheology studies were also conducted on the gels. Cytotoxicity was evaluated in human gingival fibroblasts in the following groups: WG (1.0% carbopol gel base), PG2G (2.0% pregabalin gel), PG5G (5.0% pregabalin gel), and PG10G (10% pregabalin gel). A transparent and homogeneous gel with a pH of 6 was obtained. The formulations showed stability, and the different drug concentrations did not influence the product's characteristics. None of the tested groups showed cytotoxicity for the analyzed cells. The pregabalin gels exhibited favorable and non-toxic characteristics for human gingival fibroblasts in vitro. Therefore, this product may be a promising therapeutic alternative for topical application in the oral mucosa.

10.
Clin Nutr ; 43(10): 2438-2447, 2024 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-39305754

RESUMEN

BACKGROUND & AIMS: Obesity is associated with chronic low-grade inflammation, and adipose tissue inflammation is required for fatty tissue remodeling. Interestingly, immunosuppressed patients, as liver transplant recipients, often experience excessive weight gain. We investigated how liver recipients' inflammatory response affects body weight loss induced by dietary treatment. METHODS: Overweight liver recipients were paired with non-transplanted subjects to compare their peripheral immune profiles. RESULTS: Transplanted patients had similar profiles of peripheral blood mononuclear cells compared to controls but lower CD8lowCD56+CD16+NK cells and higher B lymphocytes. Patients showed lower serum concentrations of IFN-γ, TNF, IL-4, IL-2, and IL-10 and lower inflammatory responsiveness of peripheral blood mononuclear cells under inflammatory stimuli. Liver recipients paired with non-transplanted subjects followed a weight loss dietary plan for 6 months to verify body composition changes. After 3 and 6 months of nutritional follow-up, the control group lost more body weight than the liver recipient group. The control group decreased fat mass and waist circumference, which was not observed in transplanted patients. CONCLUSION: Therefore, liver recipients under immunosuppressant treatment responded less to different inflammatory stimuli. This impaired inflammatory milieu might be implicated in the lack of response to weight loss dietary intervention. Inflammation may be essential to trigger the weight loss induced by dietary prescription. CLINICAL TRIAL REGISTRY: ClinicalTrials.gov identification number: NCT03103984.


Asunto(s)
Dieta Reductora , Inflamación , Trasplante de Hígado , Pérdida de Peso , Adulto , Anciano , Femenino , Humanos , Masculino , Persona de Mediana Edad , Composición Corporal , Citocinas/sangre , Dieta Reductora/métodos , Inmunosupresores/administración & dosificación , Inflamación/sangre , Leucocitos Mononucleares/inmunología , Obesidad/dietoterapia , Obesidad/cirugía , Obesidad/inmunología , Sobrepeso/dietoterapia , Sobrepeso/inmunología , Sobrepeso/complicaciones
11.
Cureus ; 16(8): e66633, 2024 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-39258076

RESUMEN

Sarcoidosis is a multisystemic granulomatous disease that results from an aberrant immunological response to certain antigens. Although pulmonary involvement predominates, renal involvement may also occur. We present the case of a 59-year-old woman with a recent diagnosis of hepatic sarcoidosis and a history of non-compliance with treatment who was admitted to the hospital for study of acute kidney injury. Renal dysfunction was assumed to be a result of acute interstitial nephritis, as revealed on renal biopsy, and alterations in glomerular hemodynamics due to hypercalcemia. Renal function recovered and serum calcium levels normalized with the introduction of corticosteroid therapy.

12.
Wiley Interdiscip Rev RNA ; 15(5): e1870, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-39268566

RESUMEN

Cellular compartmentalization, achieved through membrane-based compartments, is a fundamental aspect of cell biology that contributes to the evolutionary success of cells. While organelles have traditionally been the focus of research, membrane-less organelles (MLOs) are emerging as critical players, exhibiting distinct morphological features and unique molecular compositions. Recent research highlights the pivotal role of long noncoding RNAs (lncRNAs) in MLOs and their involvement in various cellular processes across different organisms. In the context of cancer, dysregulation of MLO formation, influenced by altered lncRNA expression, impacts chromatin organization, oncogenic transcription, signaling pathways, and telomere lengthening. This review synthesizes the current understanding of lncRNA composition within MLOs, delineating their functions and exploring how their dysregulation contributes to human cancers. Environmental challenges in tumorigenesis, such as nutrient deprivation and hypoxia, induce stress granules, promoting cancer cell survival and progression. Advancements in biochemical techniques, particularly single RNA imaging methods, offer valuable tools for studying RNA functions within live cells. However, detecting low-abundance lncRNAs remains challenging due to their limited expression levels. The correlation between lncRNA expression and pathological conditions, particularly cancer, should be explored, emphasizing the importance of single-cell studies for precise biomarker identification and the development of personalized therapeutic strategies. This article is categorized under: RNA Export and Localization > RNA Localization RNA in Disease and Development > RNA in Disease RNA Interactions with Proteins and Other Molecules > RNA-Protein Complexes.


Asunto(s)
Neoplasias , ARN Largo no Codificante , Humanos , ARN Largo no Codificante/genética , ARN Largo no Codificante/metabolismo , Neoplasias/genética , Neoplasias/metabolismo , Neoplasias/patología , Animales , Gránulos Citoplasmáticos/metabolismo , Gránulos Citoplasmáticos/genética
13.
JCO Clin Cancer Inform ; 8: e2300180, 2024 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-39292984

RESUMEN

PURPOSE: Emerging evidence suggests that the use of artificial intelligence can assist in the timely detection and optimization of therapeutic approach in patients with prostate cancer. The conventional perspective on radiomics encompassing segmentation and the extraction of radiomic features considers it as an independent and sequential process. However, it is not necessary to adhere to this viewpoint. In this study, we show that besides generating masks from which radiomic features can be extracted, prostate segmentation and reconstruction models provide valuable information in their feature space, which can improve the quality of radiomic signatures models for disease aggressiveness classification. MATERIALS AND METHODS: We perform 2,244 experiments with deep learning features extracted from 13 different models trained using different anatomic zones and characterize how modeling decisions, such as deep feature aggregation and dimensionality reduction, affect performance. RESULTS: While models using deep features from full gland and radiomic features consistently lead to improved disease aggressiveness prediction performance, others are detrimental. Our results suggest that the use of deep features can be beneficial, but an appropriate and comprehensive assessment is necessary to ensure that their inclusion does not harm predictive performance. CONCLUSION: The study findings reveal that incorporating deep features derived from autoencoder models trained to reconstruct the full prostate gland (both zonal models show worse performance than radiomics only models), combined with radiomic features, often lead to a statistically significant increase in model performance for disease aggressiveness classification. Additionally, the results also demonstrate that the choice of feature selection is key to achieving good performance, with principal component analysis (PCA) and PCA + relief being the best approaches and that there is no clear difference between the three proposed latent representation extraction techniques.


Asunto(s)
Aprendizaje Profundo , Neoplasias de la Próstata , Humanos , Masculino , Neoplasias de la Próstata/diagnóstico por imagen , Neoplasias de la Próstata/patología , Procesamiento de Imagen Asistido por Computador/métodos , Algoritmos , Pronóstico , Interpretación de Imagen Asistida por Computador/métodos , Radiómica
14.
Parkinsonism Relat Disord ; 128: 107124, 2024 Sep 02.
Artículo en Inglés | MEDLINE | ID: mdl-39236509

RESUMEN

BACKGROUND: Parkinson's disease (PD) ranks second in global neurodegenerative disorders. The "Parkinson's Real-world Impact assesSMent (PRISM)" study addressed the disease burden and treatment of European PD patients. Yet, the burden on Portuguese PD patients remains unexplored. Here, we outline the demographics, clinical features, and impact of PD in the Portuguese PRISM cohort. METHODS: Descriptive analysis of the PRISM Portuguese cohort (80 patients) was performed, emphasizing socio-demographic data, anti-PD medication usage, PD impact on patients' lives and healthcare resources utilization. RESULTS: The predominant comorbidities in the Portuguese PD cohort (55 % male; mean age 66.2 years; mean disease duration 8.8 years) included depression (26.3 %) and anxiety (26.3 %). Levodopa was the initial prescribed anti-PD medication for 88 % of patients. Among Portuguese PDP, dopamine agonists (DA), monoamine oxidase-B (MAO-B) inhibitors, and catechol-O-methyltransferase (COMT) inhibitors were used by 50 %, 44.4 %, and 18.3 %, respectively. Portuguese PDP experienced impaired quality of life (PDQ-39 score: 31.3 ± 16.8), various non-motor symptoms, namely sadness/blues (65.4 %), urinary urgency (63.5 %), high/low sex interest (57.7 %), while 56 % reported at least one impulse control behavior. Additionally, 30.8 % retired early due to PD and 31.8 % reduced hours in daily activities. Mental health appointments were attended by 31 %, primarily in psychiatry (19 %) and psychology (6 %), and psychotherapy. CONCLUSION: This study uncovers the burden of PD among Portuguese patients, revealing current treatment methods, impact on daily life and healthcare resources employed in Portugal. It emphasizes the need for personalized clinical strategies at national and international levels to improve long-term health outcomes and quality of life of PD patients.

15.
Epigenetics ; 19(1): 2400423, 2024 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-39255363

RESUMEN

A differential diet with royal jelly (RJ) during early larval development in honeybees shapes the phenotype, which is probably mediated by epigenetic regulation of gene expression. Evidence indicates that small molecules in RJ can modulate gene expression in mammalian cells, such as the fatty acid 10-hydroxy-2-decenoic acid (10-HDA), previously associated with the inhibition of histone deacetylase enzymes (HDACs). Therefore, we combined computational (molecular docking simulations) and experimental approaches for the screening of potential HDAC inhibitors (HDACi) among 32 RJ-derived fatty acids. Biochemical assays and gene expression analyses (Reverse Transcriptase - quantitative Polymerase Chain Reaction) were performed to evaluate the functional effects of the major RJ fatty acids, 10-HDA and 10-HDAA (10-hydroxy-decanoic acid), in two human cancer cell lines (HCT116 and MDA-MB-231). The molecular docking simulations indicate that these fatty acids might interact with class I HDACs, specifically with the catalytic domain of human HDAC2, likewise well-known HDAC inhibitors (HDACi) such as SAHA (suberoylanilide hydroxamic acid) and TSA (Trichostatin A). In addition, the combined treatment with 10-HDA and 10-HDAA inhibits the activity of human nuclear HDACs and leads to a slight increase in the expression of HDAC-coding genes in cancer cells. Our findings indicate that royal jelly fatty acids collectively contribute to HDAC inhibition and that 10-HDA and 10-HDAA are weak HDACi that facilitate the acetylation of lysine residues of chromatin, triggering an increase in gene expression levels in cancer cells.


Asunto(s)
Ácidos Grasos , Inhibidores de Histona Desacetilasas , Simulación del Acoplamiento Molecular , Humanos , Inhibidores de Histona Desacetilasas/farmacología , Inhibidores de Histona Desacetilasas/química , Ácidos Grasos/metabolismo , Abejas , Línea Celular Tumoral , Animales , Ácidos Grasos Monoinsaturados/farmacología , Ácidos Grasos Monoinsaturados/química , Histona Desacetilasa 2/metabolismo , Histona Desacetilasa 2/genética , Histona Desacetilasa 2/antagonistas & inhibidores , Células HCT116
16.
J Forensic Odontostomatol ; 42(2): 60-75, 2024 Aug 29.
Artículo en Inglés | MEDLINE | ID: mdl-39244767

RESUMEN

Estimating the post-mortem interval (PMI) of human remains based on the histomorphology of dental pulp parameters is promising, but available evidence is scarce and sometimes contradictory without a scientific model. The aim of the study is to characterise the histomorphological changes of dental pulp associated with the decomposition of human remains by a qualitative and quantitative approach. The main aim is to establish a correlation based on post-mortem (PM) dental pulp histomorphology and the PMI, and whether pulp degradation could be an available medico-legal tool for PMI estimation beyond the first week after death (late PMI). The eligible sample consisted of 27 sound teeth from 16 healthy patients aged 16 to 72 years due to orthodontic or oral surgery treatment, to create PMI's simulating the death of the subject as the time elapsed from tooth avulsion. Data collected from patients (sex, date of birth, tooth position, date and hour of the avulsion, date and hour of pulp extraction) were anonymised in accordance with the requirements of Faculty of Dental Medicine of the University of Lisbon. The sample was divided into 9 groups of 3 teeth according to different PMI sets from T0 (baseline) up to 2 weeks (T0, 7, 12, 24, 36, 48, and 72 hours, 1 and 2 weeks). All the dental samples were stored at room temperature up to the time of pulp extraction and then prepared with haematoxylin and eosin stain. High-resolution microscopy was performed to obtain histological images. An operator performed the qualitative evaluation of blood vessels, collagen fibres, and the extra-cellular matrix (ECM) in PM pulps and measured the variation in cells/nuclei density by counting 6 different ROIs (Regions of Interest) for each pulp manually and automatically (quantitative analysis). Qualitative results showed that the degeneration of dental pulp appears 7 hours after death but histological changes in vessels, fibres, and ECM in PM dental pulp are characterised by high variability, consequently it is not possible to generalise the results for early PMIs. Quantitative measurements proved that cell count cannot be standardised due to the presence of superimposed layers of cells and nuclei fragmentation. Odontoblasts did not demonstrate evidence of cellular or nuclear lysis up to 14 PM suggesting their applicability in late PMIs. Future research will focus on late PMIs and different techniques of tooth preparation.


Asunto(s)
Pulpa Dental , Cambios Post Mortem , Humanos , Pulpa Dental/patología , Adulto , Femenino , Adolescente , Masculino , Persona de Mediana Edad , Adulto Joven , Anciano , Odontología Forense/métodos , Odontoblastos/patología , Microscopía , Colágeno/análisis
17.
Biomacromolecules ; 25(10): 6748-6761, 2024 Oct 14.
Artículo en Inglés | MEDLINE | ID: mdl-39305251

RESUMEN

Bacterial cellulose (BC) has a long-standing human consumption history in different geographies without any report of adverse effects. Despite its unique textural and functional properties, the use of BC in food products in Europe is still restricted due to concerns over its nanosize. Here, we evaluated the potential uptake of celluloses (from plant and microbial sources, processed using different blenders) by macrophages (differentiated THP-1 cells) and human intestinal epithelial cells (Caco-2 and HT29-MTX cells) without (coculture) or with (triculture) Raji-B cells. A carbohydrate-binding module coupled to a green fluorescent protein was employed to observe cellulose in the cell cultures by confocal laser scanning microscopy and stimulated emission depletion microscopy. The methodology demonstrated excellent sensitivity, allowing detection of single nanocrystals within cells. All celluloses were taken up by the macrophages, without significantly compromising the cell's metabolic viability. The viability of the cocultures was also not affected. Furthermore, no internalization was observed in the triculture cell model that was exposed 24 h to BC and Avicel LM310. When (rarely) detected, cellulose particles were found on the apical side of the membrane. Overall, the obtained results suggest that BC should not be absorbed into the human gut.


Asunto(s)
Celulosa , Células Epiteliales , Macrófagos , Humanos , Celulosa/metabolismo , Macrófagos/metabolismo , Células Epiteliales/metabolismo , Tracto Gastrointestinal/metabolismo , Células HT29 , Células CACO-2 , Células THP-1 , Técnicas de Cocultivo/métodos
18.
J Mol Histol ; 2024 Sep 09.
Artículo en Inglés | MEDLINE | ID: mdl-39249549

RESUMEN

Conservation of the genetic diversity through skin and cartilage biobanks represents an essential strategy for maintaining biodiversity. Biobanks for the wild species of the order Rodentia have been little studied. Considering that the cryopreservation technique has specific relationships with the tissue and species of interest, we propose investigating different techniques for preserving tissue integrity and cell viability after cartilage and skin culture from Spix's yellow-toothed cavies. Subsequently, two techniques [solid-surface vitrification (SSV) vs. slow freezing (SF)] were used for cartilage and skin cryopreservation. Tissues not subjected to cryopreservation were used as controls. All tissues were evaluated for morphology and proliferation by histological techniques. Moreover, fragments were cultured, and cells were evaluated for viability, proliferation, metabolism, and apoptosis. Regardless of the cryopreservation technique, no differences were observed for the thickness of the epidermis, dermis, skin, spinous and basal layers, fibroblasts, and proliferative activity regarding the number of nucleolar organizer regions (NOR). SSV ensured better maintenance of epidermal cells, normal chondrocytes, filled gaps, collagen fibers, proliferative activity by NOR area/cell, and reduced perinuclear halos and empty gaps compared to SF. SF ensured the conservation of corneum thickness compared to the control. Although both techniques promoted cell recovery after culture, cells from SF resulted in better subconfluence time and day with cell growth around fragments compared to SSV. In conclusion, both cryopreservation techniques resulted in viable cells after culture. However, SSV promoted better maintenance of tissue morphological integrity, and SF ensured the preservation of all cell quality parameters in Spix's yellow-toothed cavies.

19.
Front Public Health ; 12: 1362148, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-39319300

RESUMEN

Background: Emotions can be regulated through several regulatory strategies that are involved in the development of psychopathological symptoms. Despite the well-established association between psychopathology and emotion dysregulation, little is known about the relationship between individual symptoms of depression and anxiety and emotion regulation strategies (ERS), as well as between ERS themselves. Method: We conducted a cross-sectional study and examined the interactions between six ERS (reappraisal, engagement, rumination, suppression, arousal control, and distraction) and assessed their distinctive association with the activation of specific symptoms of depression and anxiety in a community sample of 376 adults (80.4% female; Mage = 32.70; SDage = 11.80). The Regulation Emotion Systems Survey (RESS) was used to measure ERS. The Patient Health Questionnaire (PHQ-9) and the Generalized Anxiety Disorder (GAD-7) were used to assess psychological symptoms. An exploratory graph analysis was performed to examine the structural properties of the network of interactions between these behaviors. Additionally, to test the association of ERS with the activation of the depression symptoms network, an expected symptoms activity (ESA) was conducted. Results: Six communities were found that correspond to the six ERS. Rumination and suppression have a significant association with symptom activation (particularly low self-esteem), whereas reappraisal reduces symptomatic activation. The effect of arousal control, engagement, and distraction appears to depend on the remaining ERS rather than having much influence on their own. Conclusion: This study provides insight into how ERS interact with each other and with individual symptoms of depression and anxiety. Understanding the effects of these interactions on symptom activation and comorbidity can improve our understanding of psychopathology.


Asunto(s)
Ansiedad , Depresión , Regulación Emocional , Humanos , Femenino , Masculino , Estudios Transversales , Regulación Emocional/fisiología , Adulto , Depresión/psicología , Encuestas y Cuestionarios , Ansiedad/psicología , Persona de Mediana Edad , Trastornos de Ansiedad/psicología , Adulto Joven
20.
Artículo en Inglés | MEDLINE | ID: mdl-39250356

RESUMEN

Rheumatic and Musculoskeletal Diseases (RMDs) are very common and can negatively impact patients' quality of life. The current care of patients with RMDs is episodic, based on a few yearly doctor visits, which may not provide an adequate picture of the patient's condition. Researchers have hypothesized that RMDs could be passively monitored using smartphones or sensors, however, there are no datasets to support this development. We introduce the COTIDIANA Dataset: a holistic, multimodal, multidimensional, and open-access resource that gathers data on mobility and physical activity, finger dexterity, and mental health, key dimensions affected by RMDs. We gathered smartphone and self-reported data from 31 patients and 28 age-matched controls, including inertial sensors, keyboard metrics, communication logs, and reference tests/scales. A preliminary analysis showed the potential for extracted metrics to predict RMD diagnosis and condition characteristics. Our dataset shall enable the community to create mobile and wearable-based solutions for patients with RMDs.

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