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Search Results (1,278)

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13 pages, 857 KiB  
Article
Orange Allergy Beyond LTP: IgE Recognition of Germin-like Proteins in Citrus Fruits
by M. Soledad Zamarro Parra, Montserrat Martínez-Gomaríz, Alan Hernández, Javier Alcover, Isabel Dobski, David Rodríguez, Ricardo Palacios and Antonio Carbonell
Curr. Issues Mol. Biol. 2025, 47(8), 621; https://doi.org/10.3390/cimb47080621 - 5 Aug 2025
Abstract
Orange allergy is estimated to account for up to 3–4% of food allergies. Major allergens identified in orange (Citrus sinensis) include Cit s 1 (germin-like protein) and Cit s 2 (profilin), while Cit s 3 (non-specific lipid transfer protein, nsLTP) and [...] Read more.
Orange allergy is estimated to account for up to 3–4% of food allergies. Major allergens identified in orange (Citrus sinensis) include Cit s 1 (germin-like protein) and Cit s 2 (profilin), while Cit s 3 (non-specific lipid transfer protein, nsLTP) and Cit s 7 (gibberellin-regulated protein) have also been described. The objective of this study was to investigate the presence and IgE-binding capacity of germin-like proteins in citrus fruits other than oranges. We describe five patients with immediate allergic reactions after orange ingestion. All patients underwent skin prick tests (SPT) to aeroallergens and common food allergens, prick-by-prick testing with orange, lemon, and mandarin (pulp, peel, seeds), total IgE, specific IgE (sIgE), anaphylaxis scoring (oFASS), and the Food Allergy Quality of Life Questionnaire (FAQLQ-AF). Protein extracts from peel and pulp of orange, lemon, and mandarin were analyzed by Bradford assay, SDS-PAGE, and IgE immunoblotting using patient sera. Selected bands were identified by peptide mass fingerprinting. A 23 kDa band was recognized by all five patients in orange (pulp and peel), lemon (peel), and mandarin (peel). This band was consistent with Cit s 1, a germin-like protein already annotated in the IUIS allergen database for orange but not for lemon or mandarin. Peptide fingerprinting confirmed the germin-like identity of the 23 kDa bands in all three citrus species. Germin-like proteins of approximately 23 kDa were identified as IgE-binding components in peel extracts of orange, lemon, and mandarin, and in orange pulp. These findings suggest a potential shared allergen across citrus species that may contribute to allergic reactions independent of LTP sensitization. Full article
(This article belongs to the Section Molecular Plant Sciences)
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9 pages, 805 KiB  
Article
Feasibility and Safety of Liberal Fluid Fasting in an Orthogeriatric Department: A Prospective Before-and-After Cohort Study
by Thomas Saller, Janine Allmendinger, Patricia Knabe, Max Knabe, Lina Lenninger, Anne-Marie Just, Denise Seidenspinner, Boris Holzapfel, Carl Neuerburg and Roland Tomasi
J. Clin. Med. 2025, 14(15), 5477; https://doi.org/10.3390/jcm14155477 - 4 Aug 2025
Viewed by 9
Abstract
Background: The rationale for strict fluid fasting for pediatric and adult patients has been questioned recently. Point-of-care tools for the evaluation of gastric content have evolved over time, often using gastric ultrasound. Usually, the gastric antral cross-sectional area (CSA) is determined. A liberal [...] Read more.
Background: The rationale for strict fluid fasting for pediatric and adult patients has been questioned recently. Point-of-care tools for the evaluation of gastric content have evolved over time, often using gastric ultrasound. Usually, the gastric antral cross-sectional area (CSA) is determined. A liberal fluid fasting regimen, that is, ingestion of liquid fluids until the call for theatre, does not delay gastric emptying compared to midnight fasting, as evaluated with gastric ultrasound. Anesthesia is safe, and no adverse events result from a liberal regimen. Methods: The ethics committee of LMU Munich approved the study (21-0903). Liberal fluid fasting in a geriatric orthopedic surgery department (LFFgertrud) is a sub-study within a project investigating perioperative neurocognitive disorders (Study Registration: DRKS00026801). After obtaining informed consent from 134 geriatric patients 70 years or older, we investigated the gastric antral cross-sectional area (CSA) prior to and postimplementation of liberal fluid management, respectively. Results: After the implementation of liberal fluid fasting, fasting times for solid food and liquids decreased from 8.8 (±5.5) to 1.8 (±1.8) hours (p < 0.0001). In 39 patients where CSA was obtained, a slight increase in fluid was encountered. No critical amount of gastric content was observed, and no adverse events occurred. Conclusions: A liberal fluid fasting concept was safe even for comorbid elderly patients in orthopedic surgery. Applying a gastric ultrasound may be helpful to increase safety. According to the incidence of complications encountered in our study, it seems indispensable. Full article
(This article belongs to the Section Anesthesiology)
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11 pages, 1083 KiB  
Article
Assessment of 137Cs and 40K Transfer Factors in Croatian Agricultural Systems and Implications for Food Safety
by Tomislav Bituh, Branko Petrinec, Dragutin Hasenay and Sanja Stipičević
Environments 2025, 12(8), 269; https://doi.org/10.3390/environments12080269 - 2 Aug 2025
Viewed by 214
Abstract
Croatian agricultural legislation acknowledges the significance of radionuclides as pollutants in agricultural lands; however, it lacks specific thresholds or reference values for contamination levels, in contrast to other contaminants. This absence highlights the necessity for a comprehensive assessment of radionuclides across various agricultural [...] Read more.
Croatian agricultural legislation acknowledges the significance of radionuclides as pollutants in agricultural lands; however, it lacks specific thresholds or reference values for contamination levels, in contrast to other contaminants. This absence highlights the necessity for a comprehensive assessment of radionuclides across various agricultural systems in Croatia. This study investigates the transfer of radionuclides 137Cs and 40K from soil to agricultural crops throughout Croatia and estimates the consequent annual ingestion dose for the population. The samples collected comprised food crops and animal feed, with corresponding soil samples analyzed to calculate transfer factors. Activity concentrations of 137Cs exhibited regional and crop-type variability, reflecting the uneven distribution of fallout and differing soil properties. Transfer factors were found to range from 0.003 to 0.06 for 137Cs and from 0.15 to 3.1 for 40K, with the highest uptake occurring in kidney beans. The total estimated annual effective ingestion dose was calculated to be a maximum of 0.748 mSv/year for children aged 2–7, predominantly attributable to 40K. Given the homeostatic regulation of potassium in the human body, the dose associated with 137Cs poses a more significant radiological concern. These findings underscore the need for radionuclide-specific agricultural legislation in Croatia and offer a baseline for recommending reference values and informing future regulations regarding agricultural soil contamination. Full article
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24 pages, 1288 KiB  
Review
Counteracting the Harms of Microplastics on Humans: An Overview from the Perspective of Exposure
by Kuok Ho Daniel Tang
Microplastics 2025, 4(3), 47; https://doi.org/10.3390/microplastics4030047 - 1 Aug 2025
Viewed by 326
Abstract
Microplastics are pervasive environmental pollutants that pose risks to human health through ingestion and inhalation. This review synthesizes current practices to reduce exposure and toxicity by examining major exposure routes and dietary interventions. More than 130 papers were analyzed to achieve this aim. [...] Read more.
Microplastics are pervasive environmental pollutants that pose risks to human health through ingestion and inhalation. This review synthesizes current practices to reduce exposure and toxicity by examining major exposure routes and dietary interventions. More than 130 papers were analyzed to achieve this aim. The findings show that microplastics contaminate a wide range of food products, with particular concern over seafood, drinking water, plastic-packaged foods, paper cups, and tea filter bags. Inhalation exposure is mainly linked to indoor air quality and smoking, while dermal contact poses minimal risk, though the release of additives from plastics onto the skin remains an area of concern. Recommended strategies to reduce dietary exposure include consuming only muscle parts of seafood, moderating intake of high-risk items like anchovies and mollusks, limiting canned seafood liquids, and purging mussels in clean water before consumption. Avoiding plastic containers, especially for hot food or microwaving, using wooden cutting boards, paper tea bags, and opting for tap or filtered water over bottled water are also advised. To mitigate inhalation exposure, the use of air filters with HyperHEPA systems, improved ventilation, regular vacuuming, and the reduction of smoking are recommended. While antioxidant supplementation shows potential in reducing microplastic toxicity, further research is needed to confirm its effectiveness. This review provides practical, evidence-based recommendations for minimizing daily microplastic exposure. Full article
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20 pages, 998 KiB  
Article
Colony Nutrition Enhances Bee Resilience to Fungicides, While the Benefit of Propolis Supplementation Depends on Stress Conditions
by Yara Martins Molina Ferraz, Aline Yukari Kato, Tainá Angelica de Lima Freitas, Cássia Regina de Avelar Gomes, Thais Regina Ramos Alves, Matheus Franco Trivellato, Samir Moura Kadri, Ricardo de Oliveira Orsi, David De Jong, Jaqueline Dalbello Biller and Daniel Nicodemo
Agriculture 2025, 15(15), 1665; https://doi.org/10.3390/agriculture15151665 - 1 Aug 2025
Viewed by 215
Abstract
Enhanced colony nutrition can support brood development, resulting in better physiological conditions and increased resilience in adult honey bees, particularly under stress. This study investigated the effects of colony nutrition and adult dietary supplementation with green propolis on bee health under fungicide exposure. [...] Read more.
Enhanced colony nutrition can support brood development, resulting in better physiological conditions and increased resilience in adult honey bees, particularly under stress. This study investigated the effects of colony nutrition and adult dietary supplementation with green propolis on bee health under fungicide exposure. Colonies were managed under food restriction or nutritional supplementation for 22 weeks. Newly emerged bees from each colony were then caged and fed protein diets consisting of honey-pollen patties contaminated or not with fungicide, and sucrose sugar syrup with or without aqueous green propolis extract. Bees from supplemented colonies showed greater body weight, higher hemolymph protein levels, and higher consumption of protein food after seven days in cages. Fungicide exposure reduced hemolymph protein levels, altered the expression of detoxification and immune-related genes, and significantly decreased bee survival. Interestingly, propolis supplementation alone changed gene expression patterns and slightly reduced longevity compared to bees not exposed to propolis or fungicide. However, under fungicide stress, bees that ingested propolis survived longer, indicating a protective effect. While colony nutritional supplementation clearly promotes honey bee resilience against fungicide exposure, feeding propolis also showed promising effects, though further studies are needed to determine an optimal dietary concentration. Full article
(This article belongs to the Special Issue Honey Bees and Wild Pollinators in Agricultural Ecosystems)
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46 pages, 2278 KiB  
Review
Melanin-Concentrating Hormone (MCH): Role in Mediating Reward-Motivated and Emotional Behavior and the Behavioral Disturbances Produced by Repeated Exposure to Reward Substances
by Olga Karatayev and Sarah F. Leibowitz
Int. J. Mol. Sci. 2025, 26(15), 7143; https://doi.org/10.3390/ijms26157143 - 24 Jul 2025
Viewed by 361
Abstract
Clinical and animal studies suggest that multiple brain systems are involved in mediating reward-motivated and related emotional behavior including the consumption of commonly used drugs and palatable food, and there is evidence that the repeated ingestion of or exposure to these rewarding substances [...] Read more.
Clinical and animal studies suggest that multiple brain systems are involved in mediating reward-motivated and related emotional behavior including the consumption of commonly used drugs and palatable food, and there is evidence that the repeated ingestion of or exposure to these rewarding substances may in turn stimulate these brain systems to produce an overconsumption of these substances along with co-occurring emotional disturbances. To understand this positive feedback loop, this review focuses on a specific population of hypothalamic peptide neurons expressing melanin-concentrating hormone (MCH), which are positively related to dopamine reward and project to forebrain areas that mediate this behavior. It also examines neurons expressing the peptide hypocretin/orexin (HCRT) that are anatomically and functionally linked to MCH neurons and the molecular systems within these peptide neurons that stimulate their development and ultimately affect behavior. This report first describes evidence in animals that exposure in adults and during adolescence to rewarding substances, such as the drugs alcohol, nicotine and cocaine and palatable fat-rich food, stimulates the expression of MCH as well as HCRT and their intracellular molecular systems. It also increases reward-seeking and emotional behavior, leading to excess consumption and abuse of these substances and neurological conditions, completing this positive feedback loop. Next, this review focuses on the model involving embryonic exposure to these rewarding substances. In addition to revealing a similar positive feedback circuit, this model greatly advances our understanding of the diverse changes that occur in these neuropeptide/molecular systems in the embryo and how they relate, perhaps causally, to the disturbances in behavior early in life that predict a later increased risk of developing substance use disorders. Studies using this model demonstrate in animals that embryonic exposure to these rewarding substances, in addition to stimulating the expression of peptide neurons, increases the intracellular molecular systems in neuroprogenitor cells that promote their development. It also alters the morphology, migration, location and neurochemical profile of the peptide neurons and causes them to develop aberrant neuronal projections to forebrain structures. Moreover, it produces disturbances in behavior at a young age, which are sex-dependent and occur in females more than in males, that can be directly linked to the neuropeptide/molecular changes in the embryo and predict the development of behavioral disorders later in life. These results supporting the close relationship between the brain and behavior are consistent with clinical studies, showing females to be more vulnerable than males to developing substance use disorders with co-occurring emotional conditions and female offspring to respond more adversely than male offspring to prenatal exposure to rewarding substances. It is concluded that the continued consumption of or exposure to rewarding substances at any stage of life can, through such peptide brain systems, significantly increase an individual’s vulnerability to developing neurological disorders such as substance use disorders, anxiety, depression, or cognitive impairments. Full article
(This article belongs to the Special Issue The Role of Neurons in Human Health and Disease—3rd Edition)
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27 pages, 1706 KiB  
Review
Micro- and Nanoplastics as Emerging Threats to Both Terrestrial and Aquatic Animals: A Comprehensive Review
by Munwar Ali, Chang Xu and Kun Li
Vet. Sci. 2025, 12(8), 688; https://doi.org/10.3390/vetsci12080688 - 23 Jul 2025
Viewed by 498
Abstract
Micro- and Nanoplastic (MNP) pollution is an emerging challenge globally, posing a significant threat to both aquatic and terrestrial ecosystems worldwide. This review critically examines the sources, exposure routes, and impact of plastics, with particular focus on implications for the livestock sector. MNPs [...] Read more.
Micro- and Nanoplastic (MNP) pollution is an emerging challenge globally, posing a significant threat to both aquatic and terrestrial ecosystems worldwide. This review critically examines the sources, exposure routes, and impact of plastics, with particular focus on implications for the livestock sector. MNPs enter animals’ bodies primarily through ingestion of contaminated feed and water, inhalation, and dermal exposure, subsequently accumulating in various organs, disrupting physiological functions. Notably, MNPs facilitate the horizontal transfer of antimicrobial resistance genes (ARGs), exacerbating the global challenge of antimicrobial resistance (AMR). In agricultural environments, sources such as organic fertilizers, wastewater irrigation systems, surface runoff, and littering contribute to soil contamination, adversely affecting plant growth and soil health, which in turn compromises feed quality and ultimately animals’ productivity. This review synthesizes current evidence demonstrating how MNP exposure impairs animal production, reproduction, and survival, and highlights the interconnected risks to food safety and ecosystem health. The findings call for the urgent need for comprehensive research under controlled conditions to underscore the fine details regarding mechanisms of MNP toxicity and to inform effective mitigation strategies. Addressing MNP pollution is crucial for safeguarding animal health, ensuring sustainable livestock production, and promoting environmental sustainability and integrity. Full article
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11 pages, 223 KiB  
Review
Review of Foodborne Botulism in the UK: 2006–2024
by Corinne Francoise Laurence Amar, Burhan Ahmed, Jonathan Finch, Dunstan Rajendram, Vanessa K. Wong and Gauri Godbole
Foods 2025, 14(15), 2584; https://doi.org/10.3390/foods14152584 - 23 Jul 2025
Viewed by 443
Abstract
Food-borne botulism is a rare but serious disease caused by ingestion of botulinum neurotoxin pre-formed in food by Clostridium botulinum. Between 2006 and 2009, no foodborne botulism cases were reported in the UK. However, the period from 2010 to 2024 saw 13 cases, [...] Read more.
Food-borne botulism is a rare but serious disease caused by ingestion of botulinum neurotoxin pre-formed in food by Clostridium botulinum. Between 2006 and 2009, no foodborne botulism cases were reported in the UK. However, the period from 2010 to 2024 saw 13 cases, encompassing seven separate incidents and two outbreaks, with no reported fatalities. Cases were predominantly linked to imported, home-made, and artisanal foods, occasionally to commercial products. Diagnostic and public health challenges include delayed clinical diagnosis, delayed sample collection, inadequate specimen volumes, and the frequent unavailability of suspected food sources, hampering epidemiological investigations. The UK has an extremely low incidence of foodborne botulism with an estimated rate of 0.001 cases per 100,000 people per year, but despite this low occurrence, food botulism remains a public health emergency as it requires timely treatment and rapid reactive intervention to be undertaken by multiple regulatory agencies. Continuous professional training of medical staff, up-to-date clinical guidance, rapid diagnostic, and food investigations are essential for optimising patient outcomes and prevention. Full article
(This article belongs to the Special Issue Feature Reviews on Food Microbiology)
19 pages, 2340 KiB  
Article
Threitol, a Novel Functional Sugar Alcohol Biosynthesized by Engineered Yarrowia lipolytica, Has the Potential as a Low-Calorie Sugar-Reducing Sweetener
by Qing Li, Shuo Xu, Tong Li, Liyun Ji and Hairong Cheng
Foods 2025, 14(14), 2539; https://doi.org/10.3390/foods14142539 - 20 Jul 2025
Viewed by 405
Abstract
The global obesity and metabolic syndrome epidemic have accelerated demand for reduced-sugar food, prompting the food industry to adopt functional sugar alcohols as sucrose substitutes. Threitol is a four-carbon sugar alcohol and an isomer of erythritol. However, there is a scarcity of studies [...] Read more.
The global obesity and metabolic syndrome epidemic have accelerated demand for reduced-sugar food, prompting the food industry to adopt functional sugar alcohols as sucrose substitutes. Threitol is a four-carbon sugar alcohol and an isomer of erythritol. However, there is a scarcity of studies reporting on the edible safety of threitol. This study assessed threitol’s toxicological and metabolic properties. Acute oral administration (10 g/kg) caused no mortality or abnormalities in mice. Repeated 28-day exposure revealed no behavioral or histopathological alterations, with negative outcomes in three genotoxicity tests. Metabolic studies in rats demonstrated that the majority of ingested threitol is excreted in the urine within 24 h. Sensory evaluation indicated threitol’s sweetness equivalence to sucrose, exceeding erythritol and allulose. Notably, 16S rRNA sequencing revealed gut microbiota modulation in threitol-fed mice, indicating potential intestinal health benefits. These integrated findings establish threitol’s preclinical safety and support its development as a novel low-calorie sweetener. Full article
(This article belongs to the Section Nutraceuticals, Functional Foods, and Novel Foods)
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14 pages, 1031 KiB  
Article
Seroprevalence of IgG and IgE Antibodies Against Anisakis in the Presumably Healthy Population of the Canary Islands
by Eligia González-Rodríguez, Marta Rodero, J. Alberto Montoya-Alonso, Kevin M. Santana-Hernández, Myriam R. Ventura, Carmen Cuéllar and Eligia Rodríguez-Ponce
Antibodies 2025, 14(3), 60; https://doi.org/10.3390/antib14030060 - 17 Jul 2025
Viewed by 224
Abstract
Food-borne zoonoses, particularly anisakiosis caused by Anisakis spp., are an increasing public health concern due to the rising consumption of raw fish. Anisakiosis results from the ingestion of third-stage larvae of Anisakidae nematodes, with the genus Anisakis re-sponsible for approximately 97% of human [...] Read more.
Food-borne zoonoses, particularly anisakiosis caused by Anisakis spp., are an increasing public health concern due to the rising consumption of raw fish. Anisakiosis results from the ingestion of third-stage larvae of Anisakidae nematodes, with the genus Anisakis re-sponsible for approximately 97% of human cases. While regulatory protocols exist to minimize infection risk in commercial settings, domestic food preparation often lacks such safeguards, creating a gap in public health protection. In the Canary Islands, a major Spanish aquaculture region, farmed fish exhibit a low Anisakis prevalence, suggesting minimal risk from aquaculture products. In contrast, wild-caught fish demonstrate varia-ble parasitism, with recent studies reporting a 25% prevalence among commercial species. Methods: This study assessed Anisakis exposure in the Canary Islands by measuring specific IgG and IgE antibodies in 1043 serum samples collected from all seven islands between March 2014 and October 2015. ELISA assays detected anti-Anisakis antibodies, and the results were analyzed by age, sex, island, and isoclimatic zone. Results: Overall, 16.9% of samples were IgG-positive and 6.8% were IgE-positive. Seroprevalence was significantly higher in indi-viduals aged 60 years and above. Geographic heterogeneity was notable: La Palma had the highest IgG seroprevalence (35.3%), while El Hierro showed the highest IgE prevalence (16.3%). Temperate isoclimatic zones exhibited higher antibody prevalence than dry zones. These findings indicate variable Anisakis exposure across the Canary Islands, likely influenced by environmental and behavioral factors. Conclusions: The results highlight the need for targeted public health interventions to reduce the anisakiosis risk, particularly in regions and populations with elevated exposure. Full article
(This article belongs to the Section Antibody-Based Diagnostics)
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6 pages, 192 KiB  
Proceeding Paper
From Sea to Plate: The Plastic Pollution Problem in the Food Chain
by Carolyne Shealy, Gabriela Fernandez, Domenico Vito and Carol Maione
Med. Sci. Forum 2025, 33(1), 4; https://doi.org/10.3390/msf2025033004 - 15 Jul 2025
Viewed by 287
Abstract
The rising concern over plastic pollution is not only related to pollution in marine and terrestrial habitats but also effects humans. This study analyzes the trophic transfer of microplastics throughout the food chain, with an emphasis on the effects on human health. It [...] Read more.
The rising concern over plastic pollution is not only related to pollution in marine and terrestrial habitats but also effects humans. This study analyzes the trophic transfer of microplastics throughout the food chain, with an emphasis on the effects on human health. It provides a review of 12 articles analyzing the microplastic intake by humans via ingestion of fish and environmental exposure. In particular, the reviewed studies focused on microplastic ingestion by fish and animals intended for human consumption, the distribution of microplastics in human tissues, and human blood. The results of this analysis can extend our understanding of microplastic transfer in the human body, with implications for future research. Full article
25 pages, 821 KiB  
Review
Cellular and Molecular Bases for the Application of Polyphenols in the Prevention and Treatment of Cardiovascular Disease
by Carlo Caiati and Emilio Jirillo
Diseases 2025, 13(7), 221; https://doi.org/10.3390/diseases13070221 - 15 Jul 2025
Viewed by 611
Abstract
Background: Cardiovascular disease (CVD) is very widespread in countries with a Western-style diet, representing one of the major causes of morbidity. Genetic factors, obesity, diabetes, dyslipidemia, smoking, and ageing are risk factors for CVD outcomes. From a pathogenic point of view, the condition [...] Read more.
Background: Cardiovascular disease (CVD) is very widespread in countries with a Western-style diet, representing one of the major causes of morbidity. Genetic factors, obesity, diabetes, dyslipidemia, smoking, and ageing are risk factors for CVD outcomes. From a pathogenic point of view, the condition of low-grade inflammation of the arteries leads to endothelial damage and atherosclerosis development. Nowadays, a broad range of drugs is available to treat CVD, but many of them are associated with side effects. Therefore, alternative therapeutic remedies need to be discovered in combination with conventional drugs. A balanced diet rich in fruits and vegetables, e.g., the Mediterranean diet, has been shown to lower the incidence of CVD. Plant-derived polyphenols are ingested in food, and these compounds can exert beneficial effects on human health, such as antioxidant and anti-inflammatory activities. Objective: In the present review, the cellular and molecular bases of the beneficial effects of polyphenols in the prevention and treatment of CVD will be pointed out. Methods: This review has been conducted on the basis of a literature review spanning mainly the last two decades. Results: We found that an increased dietary intake of polyphenols is associated with a parallel decrease in chronic disease incidence, including CVD. Conclusion: Despite a plethora of preclinical studies, more clinical trials are needed for a more appropriate treatment of CVD with polyphenols. Full article
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19 pages, 1475 KiB  
Article
Chemical and Morphological Constitutive Defensive Traits of Cyanobacteria Have Different Effects on the Grazing of a Small Tropical Cladoceran
by Luciana Machado Rangel, Marcella Coelho Berjante Mesquita, Shara Rosa de Barros, Vinicius Neres-Lima, Michael Ribas Celano, Mauro Cesar Palmeira Vilar, Sandra Maria Feliciano de Oliveira e Azevedo and Marcelo Manzi Marinho
Toxins 2025, 17(7), 343; https://doi.org/10.3390/toxins17070343 - 5 Jul 2025
Viewed by 591
Abstract
Antipredator defenses of bloom-forming cyanobacteria species maximize their fitness but can reduce carbon and energy transfer efficiency to higher trophic levels, making them a key regulator of plankton communities in eutrophic waters. We investigated the grazing responses of the tropical cladoceran Moina micrura [...] Read more.
Antipredator defenses of bloom-forming cyanobacteria species maximize their fitness but can reduce carbon and energy transfer efficiency to higher trophic levels, making them a key regulator of plankton communities in eutrophic waters. We investigated the grazing responses of the tropical cladoceran Moina micrura to different strains of the cyanobacteria Microcystis aeruginosa and Planktothrix isothrix, using a good food source (green algae Mono-raphidium capricornutum) as a control. Both Microcystis strains grow as unicellular and are microcystins producers; however, this cyanotoxin was not detected on the filamentous Planktothrix strains. M. micrura ingested all cyanobacteria at reduced rates compared to single diets with Monoraphidium. In mixed diets, food type had a significant effect on grazing responses, which differed interspecifically. Planktothrix was more grazed than Microcystis strains. Feeding selectivity on Monoraphidium was negatively affected by the increase of cyanobacteria in the diet. We observed varied responses across treatments, ranging from feeding inhibition to different degrees of tolerance toward cyanobacteria, particularly in non-microcystin-producing species. We also highlight the selectivity of small tropical cladocerans, a pattern that is not yet well documented. These findings emphasize that studies incorporating phyto- and zooplankton with a history of coexistence can provide more meaningful insights into natural ecosystem dynamics. Full article
(This article belongs to the Section Marine and Freshwater Toxins)
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15 pages, 1972 KiB  
Article
Intraspecific Trait Variation in Body Sizes Is Associated with Diet and Habitat Use: Evidence from Atherinella brasiliensis in a Tropical Estuary
by Emanuelle Bezerra Maciel, Maria Luísa de Araújo Albuquerque and André Luiz Machado Pessanha
Coasts 2025, 5(3), 22; https://doi.org/10.3390/coasts5030022 - 3 Jul 2025
Viewed by 256
Abstract
Intraspecific variations in the morphological traits of juveniles and adults of the Brazilian silverside, Atherinella brasiliensis, from three estuarine habitats were studied to understanding whether their morphology interacts with their dietary composition and habitat structure. For each individual, fourteen morphological measurements and eight [...] Read more.
Intraspecific variations in the morphological traits of juveniles and adults of the Brazilian silverside, Atherinella brasiliensis, from three estuarine habitats were studied to understanding whether their morphology interacts with their dietary composition and habitat structure. For each individual, fourteen morphological measurements and eight functional traits were recorded related to food acquisition and locomotion. The highest abundance of A. brasiliensis was recorded in mudflats, which were often associated with a greater number of juveniles. Overall, 392 A. brasiliensis stomachs were examined, and their diet comprised mainly zooplankton organisms, followed by insects and benthic crustaceans. Among the morphological measures, our data revealed that in vegetated habitats (seagrass and riparian vegetation), individuals showed a higher oral gape surface and caudal peduncle and fed predominately on epibiotic or benthic fauna, while for individuals that had bigger eyes in unvegetated habitats (mudflat), this facilitated the ingestion of zooplankton and diatoms. Furthermore, a greater relative body height recorded in unvegetated habitats enhanced swimming performance and was linked to the effects of the lowest habitat structure. The results highlight the significant effects of morphological variation on juvenile and adult food acquisition and swimming ability. Full article
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17 pages, 1634 KiB  
Article
Fast Determination of Furocoumarins in Food Supplements Containing Heracleum sphondylium L. Using Capillary Electrophoresis
by Eszter Laczkó Zöld, Csenge Kis, Erzsébet Nagy-György, Erzsébet Domokos, Elek Ferencz and Zoltán-István Szabó
Foods 2025, 14(13), 2348; https://doi.org/10.3390/foods14132348 - 2 Jul 2025
Viewed by 346
Abstract
Hercaleum sphondylium L., commonly known as hogweed, is a plant species that has been employed as an ingredient in food supplements aimed at enhancing reproductive organ functionality, restoring hormonal equilibrium, and producing an aphrodisiac effect. Importantly, the European Food Safety Authority (EFSA) has [...] Read more.
Hercaleum sphondylium L., commonly known as hogweed, is a plant species that has been employed as an ingredient in food supplements aimed at enhancing reproductive organ functionality, restoring hormonal equilibrium, and producing an aphrodisiac effect. Importantly, the European Food Safety Authority (EFSA) has designated it as a “substance of possible concern for human health” when found in food and food supplements, as detailed in the EFSA compendium of botanicals. Given the potential health consequences associated with the ingestion of furocoumarin-containing plants, the primary objective of this study was to develop a straightforward and rapid method for screening various furocoumarins (bergapten, isobergapten, isopimpinellin, imperatorin, and xanthotoxin) that are found in hogweed plant products and hogweed-derived food supplements. A novel ultrafast micellar electrokinetic chromatographic method was established, achieving analysis durations of less than 3 min for the complete separation of the analytes. This method is additionally characterized by its simplicity, allowing for the analysis of samples following a rapid extraction procedure and dilution, without necessitating extra cleanup steps. The investigation of ten food supplements indicated that seven products contained no detectable levels of furocoumarins, one product presented levels close to the harmless threshold, and two products exhibited concentrations significantly exceeding this threshold. The results of this study illustrate the potential of micellar electrokinetic chromatography as a feasible alternative technique for the analysis of furocoumarins in herbal products and food supplements. Full article
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