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68 result(s) for "Galea, Carmen"
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Challenges in Optimizing Nanoplatforms Used for Local and Systemic Delivery in the Oral Cavity
In this study, we focused on innovative approaches to improve drug administration in oral pathology, especially by transmucosal and transdermal pathways. These improvements refer to the type of microneedles used (proposing needles in the saw), to the use of certain enhancers such as essential oils (which, besides the amplifier action, also have intrinsic actions on oral health), to associations of active substances with synergistic action, as well as the use of copolymeric membranes, cemented directly on the tooth. We also propose a review of the principles of release at the level of the oral mucosa and of the main release systems used in oral pathology. Controlled failure systems applicable in oral pathology include the following: fast dissolving films, mucoadhesive tablets, hydrogels, intraoral mucoadhesive films, composite wafers, and smart drugs. The novelty elements brought by this paper refer to the possibilities of optimizing the localized drug delivery system in osteoarthritis of the temporomandibular joint, neuropathic pain, oral cancer, periodontitis, and pericoronitis, as well as in maintaining oral health. We would like to mention the possibility of incorporating natural products into the controlled failure systems used in oral pathology, paying special attention to essential oils.
Observational Study on Progressive Muscle Relaxation and Breathing Control for Reducing Dental Anxiety in Children
Background and Objectives: Dental anxiety is a common barrier to pediatric oral care. Non-pharmacological relaxation techniques like Jacobson’s Progressive Muscle Relaxation (JPMR) and Breathing Control (BC) may help reduce psychological and physiological stress. This study assessed the utility of JPMR and BC in reducing dental anxiety and physiological arousal in children and adolescents. Materials and Methods: In this observational study, 189 participants aged 8–17 undergoing non-invasive dental procedures were assigned to JPMR (n = 63), BC (n = 63), or control (n = 63) groups. Dental anxiety was measured with the Romanian-validated IDAF-4C+, and physiological stress was measured via blood pressure and heart rate. Pre and post-intervention data were analyzed using paired t-tests, ANOVA, and cluster analysis. Results: JPMR led to the highest reductions in IDAF-4C+ scores (Δ = −1.23, p < 0.001, d = 1.12) and systolic blood pressure (Δ = −9.4 mmHg, p < 0.01). BC showed moderate anxiety reduction (Δ = −0.64, p < 0.05, d = 0.61) with minor physiological changes. The control group showed no significant change. Cluster analysis revealed three response patterns: (1) high anxiety–strong responders (n = 58), mainly benefiting from JPMR; (2) moderate anxiety–partial responders (n = 74); and (3) low anxiety–non-responders (n = 57). Younger age and female gender were linked to better JPMR response. Conclusions: JPMR is an effective and practical method for reducing dental anxiety and physiological stress in pediatric dental care.
Comparative Study of Ozonated Olive Oil and Extra Virgin Olive Oil Effects on Oral Hygiene
(1) Background: Currently, more and more studies reveal the fact that the use of ozonated oil in dentistry brings visible benefits. The aim of this study was to evaluate the efficacy of ozonated olive oil by evaluating daily index changes (2) Methods: The available products were used in this study: ozonized olive oil (Ozon Relive) and organic cold-pressed extra virgin olive oil. At the start of the study, all mouthwashes are placed in the same type of containers and labeled with numbers from 1 to 20. The recommended dose is one teaspoon of oil, about 6 mL per day. (3) Results: Ozonated oil (Group 1) and olive oil (Group 2) groups showed statistically significant differences to oral indices (p < 0.001 in both). (4) Conclusions: The results suggested that ozonized olive oil can be fully included among the products able to assist in controlling the causative factors of gingivitis while reducing its clinical manifestations.
A Journey Along the Boulevard of Bioactive Compounds from Natural Sources, with Cosmetic and Pharmaceutical Potential: Bee Venom, Cobra Venom, Ficus carica
Animal venom and plant extracts have been used since ancient times in traditional medicine worldwide. Natural components, valued for their safety and effectiveness, have been consistently used in cosmetic and pharmaceutical applications. We propose a journey along the boulevard of active compounds from natural sources, where bee venom (BV), cobra venom (CV), and Ficus carica reveal their individual therapeutic and cosmetic properties. The originality of this review lies in exploring the synergy of these bioactive sources, an approach that has not been presented in the literature. Although BV, CV, and Ficus carica have different origins and compositions, they have multiple common pharmacological and cosmetic actions, which make them ideal for inclusion in various products that can be used for skin care and health in general. Their anti-inflammatory, antioxidant, immunomodulatory, antimicrobial, neuroprotective, and regenerative properties give them an essential role in the creation of potential innovative and effective products in the pharmaceutical and cosmetics industry. Although many plant extracts have antioxidant and anti-inflammatory properties, Ficus carica was chosen due to its complex biochemical composition, which provides valuable benefits in skin regeneration and protection against oxidative stress. According to the International Nomenclature of Cosmetic Ingredients (INCI), Ficus carica is used in the form of an extract of fruits, leaves, juice, bark or stem, each having specific applicability in topical formulations; due to the diversity of bioactive compounds, it can amplify the effectiveness of BV and CV, helping to enhance their beneficial effects and reducing the risk of adverse effects, due to its well-tolerated nature. Thus, this combination of natural ingredients opens up new perspectives in the development of innovative products, optimizing efficiency and maintaining a favorable safety profile. In this context, due to the reported experimental results, the three natural sources caught our attention, and we conceived the present work, which is a review made following the analysis of the current progress in the study of the bioactive compounds present in BV, CV, and Ficus carica. We focused on the novelties regarding pharmacological and cosmetic actions presented in the literature, and we highlighted the safety profile, as well as the modern approaches regarding the delivery and transport systems of the active substances from the three natural sources, and we evaluated their prospects in therapeutic and cosmetic use. This paper not only expands our knowledge of bioactive compounds, but it can also generate new ideas and motivations for the research and development of innovative treatments and skincare methods.
OpenToolFlux: An Open-Source Software for Estimating Gas Fluxes from Automatic Chamber Data
OpenToolFlux 1.0 is an open-source software designed to estimate soil gas fluxes from gas concentration time-series data generated by automatic chamber systems. This paper describes the physical equipment used as well as the software design and workflow. The software is a command-line application that imports tabular time-series data from the analyzer following the instructions specified in a configuration file by the user, performs configurable data-cleaning operations, and outputs a data file with volumetric flux estimates as well as diagnostic plots. The software can be configured according to the specifics of the physical equipment and experimental setups, and it is, therefore, applicable to a wide range of studies.
Antimicrobial and Antifungal Activity of Pelargonium roseum Essential Oils
Purpose: The antiseptic qualities of aromatic and medicinal plants and their extracts have been recognized since antiquity, while attempts to characterize these properties in the laboratory date back the beginning of the XXth century. In the current study essential oils obtained from Pelargonium roseum (Geraniacea) were analyzed for their antibacterial and antifungal activities. Methods: The antimicrobial activity of the Pelargonium essential oil was tested against Gram-negative bacteria (Pseudomonas aeruginosa, Proteus mirabilis, Escherichia coli), Gram-positive bacteria (Staphylococcus aureus, Enterococcus faecalis) and fungi (Candida albicans). Disc diffusion method was used to study antimicrobial activity. Results: Inhibition zones showed that the studied essential oils were active against all of the studied bacteria. In the case of Candida albicans, the complete inhibition of the fungus’s development was observed. In the cases of Pseudomonas aeruginosa and Staphylococcus aureus we observed an inhibition comparable to that obtained by the use of an appropriate antimicrobial substance. Conclusion: The volatile oils exhibited considerable inhibitory effects against all the organisms under test, in some cases comparable with those of the reference antibiotics. There were no considerable differences between the antimicrobial activities of the oil obtained by distillation and commercially available Pelargonium oils.
Andean agriculture and hand tools: A qualitative approach of exploration of needs, barriers, and opportunities for innovation
Peruvian Andean agriculture primarily consists of subsistence activities that rely on traditional methods. Rural farmers use locally made hand tools, often designed without technical or ergonomic considerations, increasing the risk of musculoskeletal disorders. This study examined farmers’ views, needs, barriers, and support in hand tool design, and how they assess satisfaction with tools during potato harvesting. A qualitative study using a phenomenological design was conducted using semi-structured interviews with 13 rural farmers from Yanaca, Apurímac, Peru. A total of 25 interviews were conducted, audio-recorded, transcribed verbatim, and analyzed via a mixed coding strategy. Data was organized using a thematic approach and triangulated to validate coding. The results from the first guide were organized into five themes: task, human, product, qualitative and environmental. Some aspects such as social and techniques aspects for adopting hand tools emerged as well as enablers like economic accessibility, similarity to traditional tools. Six themes emerged from second guide covering tools conditions for efficient use, pre-work preparation, evaluation of the tool, consequences of a deficient tool, accumulated experience and appropriation; and family and gender dynamics. We found that hand tools used in high-Andean agriculture are shaped by technical features such as weight and handle size, and external aspects like climate effect and cultural familiarity, while material limitations, rough handle surface or inadequate tool size can act as barriers. In addition, efficiency of tools during work, preparation like a sharpened tip, fit between components head and handle, local maintenance facilitates farmers’ satisfaction. These findings suggest that agricultural hand tool design should go beyond technical aspects to incorporate cultural and practical perspectives.
Estradiol and GPER Activation Differentially Affect Cell Proliferation but Not GPER Expression in the Hippocampus of Adult Female Rats
Estradiol increases cell proliferation in the dentate gyrus of the female rodent but it is not known whether the G protein-coupled estrogen receptor (GPER), a membrane receptor, is involved in this process, nor whether there are regional differences in estradiol's effects on cell proliferation. Thus, we investigated whether estradiol exerts its effects on cell proliferation in the dorsal and ventral dentate gyrus through GPER, using the GPER agonist, G1, and antagonist, G15. Ovariectomized adult female rats received a single injection of either: 17β-estradiol (10 μg), G1 (0.1, 5, 10 μg), G15 (40 μg), G15 and estradiol, or vehicle (oil, DMSO, or oil+DMSO). After 30 min, animals received an injection of bromodeoxyuridine (BrdU) and were perfused 24 h later. Acute treatment with estradiol increased, while the GPER agonist G1 (5 μg) decreased, the number of BrdU+ cells in the dentate gyrus relative to controls. The GPER antagonist, G15 increased the number of BrdU+ cells relative to control in the dorsal region and decreased the number of BrdU+ cells in the ventral region. However, G15 treatment in conjunction with estradiol partially eliminated the estradiol-induced increase in cell proliferation in the dorsal dentate gyrus. Furthermore, G1 decreased the expression of GPER in the dentate gyrus but not the CA1 and CA3 regions of the hippocampus. In summary, we found that activation of GPER decreased cell proliferation and GPER expression in the dentate gyrus of young female rats, presenting a potential and novel estrogen-independent role for this receptor in the adult hippocampus.
Transmissibility and Disease Progression of Asymptomatic Mycobacterium tuberculosis Infection, Lima, Peru
Estimating the transmissibility of asymptomatic Mycobacterium tuberculosis infection can clarify its contribution to tuberculosis (TB) spread. We conducted a prospective cohort study in Lima, Peru, enrolling index TB patients and their household contacts (HHCs) and classifying patients by the presence of symptoms including cough, night sweats, weight loss, or fever. We followed HHCs with serial tuberculin skin testing and clinical evaluations. Among 4,296 child HHCs, adjusted estimates for baseline infection (prevalence ratio 0.62 [95% CI 0.37-1.03]), incident infection at 6 months (hazard ratio (aHR) 0.63 [95% CI 0.27-1.49]), and TB disease during 1 year of follow-up (aHR 0.74 [95% CI 0.35-1.56]) were all consistent with lower risk for infection and disease progression among HHCs of asymptomatic compared with symptomatic index patients. Although asymptomatic infections may be less transmissible than symptomatic infections, the high prevalence of asymptomatic patients in national surveys suggest that they may contribute substantially to transmission.
Early progression to active tuberculosis is a highly heritable trait driven by 3q23 in Peruvians
Of the 1.8 billion people worldwide infected with Mycobacterium tuberculosis , 5–15% will develop active tuberculosis (TB). Approximately half will progress to active TB within the first 18 months after infection, presumably because they fail to mount an effective initial immune response. Here, in a genome-wide genetic study of early TB progression, we genotype 4002 active TB cases and their household contacts in Peru. We quantify genetic heritability ( h g 2 ) of early TB progression to be 21.2% (standard error 0.08). This suggests TB progression has a strong genetic basis, and is comparable to traits with well-established genetic bases. We identify a novel association between early TB progression and variants located in a putative enhancer region on chromosome 3q23 (rs73226617, OR = 1.18; P  = 3.93 × 10 −8 ). With in silico and in vitro analyses we identify rs73226617 or rs148722713 as the likely functional variant and ATP1B3 as a potential causal target gene with monocyte specific function. Between 5 and 15% of latent Mycobacterium tuberculosis infections develop into active tuberculosis (TB). Here, Luo et al. report a genome-wide association study for early TB progression in a total of 4002 active TB cases and their household contacts in Peru and they identify a locus on 3q23 in which ATP1B3 is mapped as the likely causal gene.