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Search Results (546)

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11 pages, 1621 KiB  
Article
Veillonella parvula as a Causative Agent of Discitis: Insights from a Clinical Case and Literature Overview
by Giulio D’Agati, Lorena Mignone, Antonella Bartolone, Giuseppa Sciortino, Teresa Maria Assunta Fasciana, Cinzia Calà, Silvia Bonura, Francesco Carini, Luca Pipitò and Antonio Cascio
Antibiotics 2025, 14(9), 854; https://doi.org/10.3390/antibiotics14090854 - 24 Aug 2025
Abstract
Background/Objectives: Veillonella species are Gram-negative, non-motile, non-fermentative, obligate anaerobic cocci. They are typically considered commensals of the oral cavity, respiratory tract, genitourinary tract, and gastrointestinal tract. It may be a rare cause of dental infections and discitis/spondylodiscitis. Methods: We report the case of [...] Read more.
Background/Objectives: Veillonella species are Gram-negative, non-motile, non-fermentative, obligate anaerobic cocci. They are typically considered commensals of the oral cavity, respiratory tract, genitourinary tract, and gastrointestinal tract. It may be a rare cause of dental infections and discitis/spondylodiscitis. Methods: We report the case of an 80-year-old patient diagnosed with discitis caused by Veillonella parvula, isolated from blood. In addition, we performed a comprehensive literature review summarizing all reported cases of discitis or spondylodiscitis caused by Veillonella species. Results: In our case, antimicrobial susceptibility testing was performed using the Kirby–Bauer disc diffusion method. Based on the results, the patient was treated with amoxicillin/clavulanate, which led to a favourable clinical outcome. A review of the literature revealed that, to date, only 14 cases of spondylodiscitis or discitis caused by Veillonella spp. have been reported. Potential risk factors for Veillonella spp. bacteremia were identified in only 9 cases. The most commonly affected site was the lumbar or lumbosacral spine. Magnetic resonance imaging was consistently regarded as the diagnostic gold standard. Most patients presented with localized pain. The overall therapeutic approach generally consisted of an initial course of intravenous antibiotics, typically ceftriaxone administered either as monotherapy or in combination with metronidazole, followed by an oral regimen with amoxicillin/clavulanate, given alone or alongside metronidazole. Conclusions: Spondylodiscitis due to V. parvula remains extremely rare. Although antimicrobial susceptibility patterns remain heterogeneous, beta-lactams, particularly amoxicillin/clavulanate, appear effective in most cases, and treatment regimens typically involve an initial intravenous phase followed by oral therapy. Full article
(This article belongs to the Special Issue Diagnosis and Antimicrobial Therapy of Osteoarticular Infection)
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21 pages, 1290 KiB  
Review
GLP-1 Receptor Agonists and Gastrointestinal Endoscopy: A Narrative Review of Risks, Management Strategies, and the Need for Clinical Consensus
by Javier Crespo, Juan Carlos Rodríguez-Duque, Paula Iruzubieta, Eliana C. Morel Cerda and Jose Antonio Velarde-Ruiz Velasco
J. Clin. Med. 2025, 14(15), 5597; https://doi.org/10.3390/jcm14155597 - 7 Aug 2025
Viewed by 639
Abstract
Background/Objectives: Glucagon-like peptide-1 receptor agonists (GLP-1 RAs) have transformed the management of type 2 diabetes mellitus and obesity. However, their sustained effect on delaying gastric emptying raises new challenges in gastrointestinal endoscopy performed under sedation. This narrative review aims to summarize current [...] Read more.
Background/Objectives: Glucagon-like peptide-1 receptor agonists (GLP-1 RAs) have transformed the management of type 2 diabetes mellitus and obesity. However, their sustained effect on delaying gastric emptying raises new challenges in gastrointestinal endoscopy performed under sedation. This narrative review aims to summarize current evidence on the impact of GLP-1 RAs on gastric motility and to propose clinical strategies to mitigate associated procedural risks. Methods: A narrative review was conducted integrating findings from scintigraphy, capsule endoscopy, gastric ultrasound, and existing clinical guidelines. Emphasis was placed on studies reporting residual gastric content (RGC), anesthetic safety outcomes, and procedural feasibility in patients undergoing endoscopy while treated with GLP-1 RAs. Results: GLP-1 RAs significantly increase the prevalence of clinically relevant RGC, despite prolonged fasting, with potential implications for airway protection and sedation safety. Although the risk of pulmonary aspiration remains low (≤0.15%), procedural delays, modifications, or cancellations can occur in up to 30% of cases without adapted protocols. Several professional societies (AGA, ASGE, AASLD) advocate for individualized management based on procedure type, symptomatology, treatment phase, and point-of-care gastric ultrasound (POCUS), in contrast to the systematic discontinuation recommended by the ASA. Conclusions: Effective management requires personalized fasting protocols, risk-based stratification, tailored anesthetic approaches, and interprofessional coordination. We propose a clinical decision algorithm and highlight the need for training in gastrointestinal pharmacology, POCUS, and airway management for endoscopists. Future priorities include prospective validation of clinical algorithms, safety outcome studies, and the development of intersocietal consensus guidelines. Full article
(This article belongs to the Section Gastroenterology & Hepatopancreatobiliary Medicine)
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27 pages, 3711 KiB  
Article
Human Health Risk and Bioaccessibility of Arsenic in Wadis and Marine Sediments in a Coastal Lagoon (Mar Menor, Spain)
by Salvadora Martínez López, Carmen Pérez Sirvent, María José Martínez Sánchez and María Ángeles Esteban Abad
Toxics 2025, 13(8), 647; https://doi.org/10.3390/toxics13080647 - 30 Jul 2025
Viewed by 388
Abstract
This study evaluates the potential health risks posed by geogenic arsenic in environments suitable for leisure activities, such as walking, bathing, and playing, for adults and children alike, as well as in neighbouring agricultural areas. The study includes an analysis of environmental characteristics [...] Read more.
This study evaluates the potential health risks posed by geogenic arsenic in environments suitable for leisure activities, such as walking, bathing, and playing, for adults and children alike, as well as in neighbouring agricultural areas. The study includes an analysis of environmental characteristics and the main stream originating in the adjacent mining area, with water and sediment samples taken. The study area is representative of other areas in the vicinity of the Mar Menor Lagoon, which is one of the largest and most biodiverse coastal lagoons in the Mediterranean Sea. The general characteristics of the soil and water were determined for this study, as was the concentration of As in the soil and water samples. A granulometric separation was carried out into four different fractions (<2 mm, <250 µm, <100 µm, and <65 µm). The mineralogical composition, total As content, and bioaccessible As content are analysed in each of these fractions. This provides data with which to calculate the danger of arsenic (As) to human health by ingestion and to contribute to As bioaccessibility studies and the role played by the mineralogical composition and particle size of soil ingestion. The conclusions rule out residential use of this environment, although they allow for eventual tourist use and traditional agricultural use of the surrounding soils. Full article
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33 pages, 2605 KiB  
Article
Phytochemical Profile, Vasodilatory and Biphasic Effects on Intestinal Motility, and Toxicological Evaluation of the Methanol and Dichloromethane Extracts from the Aerial Parts of Ipomoea purpurea Used in Traditional Mexican Medicine
by Valeria Sánchez-Hernández, Francisco J. Luna-Vázquez, María Antonieta Carbajo-Mata, César Ibarra-Alvarado, Alejandra Rojas-Molina, Beatriz Maruri-Aguilar, Pedro A. Vázquez-Landaverde and Isela Rojas-Molina
Pharmaceuticals 2025, 18(8), 1134; https://doi.org/10.3390/ph18081134 - 30 Jul 2025
Viewed by 550
Abstract
Background: Cardiovascular diseases, particularly hypertension, and gastrointestinal disorders represent major public health concerns in Mexico. Although a range of pharmacological treatments exists, their use is associated with adverse effects, highlighting the need for safer therapeutic alternatives. Species of the Ipomoea genus are widely [...] Read more.
Background: Cardiovascular diseases, particularly hypertension, and gastrointestinal disorders represent major public health concerns in Mexico. Although a range of pharmacological treatments exists, their use is associated with adverse effects, highlighting the need for safer therapeutic alternatives. Species of the Ipomoea genus are widely employed in Mexican traditional medicine (MTM) for their purgative, anti-inflammatory, analgesic, and sedative properties. Particularly, Ipomoea purpurea is traditionally used as a diuretic and purgative; its leaves and stems are applied topically for their anti-inflammatory and soothing effects. This study aimed to determine their phytochemical composition and to evaluate the associated vasodilatory activity, modulatory effects on intestinal smooth-muscle motility, and toxicological effects of the methanolic (ME-Ip) and dichloromethane (DE-Ip) extracts obtained from the aerial parts of I. purpurea. Methods: The phytochemical composition of the ME-Ip and DE-Ip extracts of I. purpurea was assessed using UPLC-QTOF-MS and GC-MS, respectively. For both extracts, the vasodilatory activity and effects on intestinal smooth muscle were investigated using ex vivo models incorporating isolated rat aorta and ileum, respectively, whereas acute toxicity was evaluated in vivo. Results: Phytochemical analysis revealed, for the first time, the presence of two glycosylated flavonoids within the Ipomoea genus; likewise, constituents with potential anti-inflammatory activity were detected. The identified compounds in I. purpurea extracts may contribute to the vasodilatory, biphasic, and purgative effects observed in this species. The EC50 values for the vasodilatory effects of the methanolic (ME-Ip) and dichloromethane (DE-Ip) extracts were 0.80 and 0.72 mg/mL, respectively. In the initial phase of the experiments on isolated ileal tissues, both extracts induced a spasmodic (contractile) effect on basal motility, with ME-Ip exhibiting higher potency (EC50 = 27.11 μg/mL) compared to DE-Ip (EC50 = 1765 μg/mL). In contrast, during the final phase of the experiments, both extracts demonstrated a spasmolytic effect, with EC50 values of 0.43 mg/mL for ME-Ip and 0.34 mg/mL for DE-Ip. In addition, both extracts exhibited low levels of acute toxicity. Conclusions: The phytochemical profile and the vasodilatory and biphasic effects of the I. purpurea extracts explain, in part, the use of I. purpurea in MTM. The absence of acute toxic effects constitutes a preliminary step in the toxicological safety assessment of I. purpurea extracts and demonstrates their potential for the development of phytopharmaceutic agents as adjuvants for the treatment of cardiovascular and gastrointestinal disorders. Full article
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21 pages, 2357 KiB  
Article
Effects of Dietary and Fecal Microbial Transplant Treatments on Fecal Characteristics, Metabolites, and Microbiota of Adult Cats Treated with Metronidazole
by Sara E. Martini, Patrícia M. Oba, Jan S. Suchodolski and Kelly S. Swanson
Pets 2025, 2(3), 27; https://doi.org/10.3390/pets2030027 - 29 Jul 2025
Viewed by 566
Abstract
Antibiotics may be used for gastrointestinal enteropathies but research has demonstrated significant microbiota dysmetabolism, fermentation pattern alterations, and prolonged dysbiosis following treatment. The objective of this study was to determine how dietary fiber or fecal microbial transplant (FMT) treatments impacted the fecal characteristics, [...] Read more.
Antibiotics may be used for gastrointestinal enteropathies but research has demonstrated significant microbiota dysmetabolism, fermentation pattern alterations, and prolonged dysbiosis following treatment. The objective of this study was to determine how dietary fiber or fecal microbial transplant (FMT) treatments impacted the fecal characteristics, metabolite concentrations, and microbiota populations of cats treated with metronidazole. Twenty-five healthy adult cats (6.75 ± 1.20 yr) were fed a commercial kibble diet for 2 wk, administered metronidazole (20 mg/kg BW BID) for 2 wk, then monitored for 4 wk. Cats were allotted to one of three interventions (diet, diet + beet pulp, diet + FMT) for 1 wk, interventions ceased, then recovery was monitored for 4 wk. Fresh fecal samples were collected at the end of each phase and at the mid-points of recovery. As anticipated, metronidazole increased fecal scores and moisture (p < 0.05), reduced fecal bacterial alpha diversity (p < 0.0001), and reduced fecal metabolite concentrations. Few treatment effects were detected, with antibiotic recovery contributing to many of the results observed. Dysbiosis was persistent throughout the study, with 4/25 cats still demonstrating mild dysbiosis after 9 wk. Overall, dietary or FMT treatments may aid in accelerated antibiotic recovery in cats but further research is needed to refine treatments for greater efficacy. Full article
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22 pages, 3781 KiB  
Article
Enhancing Parenteral Nutrition via Supplementation with Antioxidant Lutein in Human Serum Albumin-Based Nanosuspension
by Izabela Żółnowska, Aleksandra Gostyńska-Stawna, Katarzyna Dominiak, Barbara Jadach and Maciej Stawny
Pharmaceutics 2025, 17(8), 971; https://doi.org/10.3390/pharmaceutics17080971 - 26 Jul 2025
Viewed by 554
Abstract
Background/Objectives: Parenteral nutrition (PN) supports patients unable to receive nutrients via the gastrointestinal tract, but it lacks the health-promoting natural bioactive compounds found in a typical oral diet. This study aimed to develop a human serum albumin-based intravenous delivery system for lutein [...] Read more.
Background/Objectives: Parenteral nutrition (PN) supports patients unable to receive nutrients via the gastrointestinal tract, but it lacks the health-promoting natural bioactive compounds found in a typical oral diet. This study aimed to develop a human serum albumin-based intravenous delivery system for lutein (an antioxidant carotenoid with vision-supportive and hepatoprotective properties) as a PN additive. Methods: An albumin–lutein nanosuspension (AlbLuteN) was synthesized using a modified nanoparticle albumin-bound (nabTM) technology and characterized physicochemically. The nanoformulation was added to four commercial PN admixtures to assess the supplementation safety throughout the maximum infusion period. Visual inspection and measurements of fat globules larger than 5 µm (PFAT5) and the mean hydrodynamic diameter (Z-average), zeta potential, pH, osmolality, and lutein content were performed to detect potential interactions and evaluate the physicochemical stability. Results: AlbLuteN consisted of uniform particles (Z-average of 133.5 ± 2.8 nm) with a zeta potential of −28.1 ± 1.8 mV, lutein content of 4.76 ± 0.39%, and entrapment efficiency of 84.4 ± 6.3%. Differential scanning calorimetry confirmed the amorphous state of lutein in the nanosuspension. AlbLuteN was successfully incorporated into PN admixtures, without visible phase separation or significant changes in physicochemical parameters. The PFAT5 and Z-average values remained within pharmacopeial limits over 24 h. No substantial shifts in zeta potential, pH, or osmolality were observed. The lutein content remained stable, with losses below 3%. Conclusions: AlbLuteN can be safely added to representative PN admixtures without compromising their stability. This approach offers a novel strategy for intravenous lutein delivery and may contribute to improving the nutritional profile of PN. Full article
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26 pages, 2368 KiB  
Article
Exploring Patient-Centered Perspectives on Suicidal Ideation: A Mixed-Methods Investigation in Gastrointestinal Cancer Care
by Avishek Choudhury, Yeganeh Shahsavar, Imtiaz Ahmed, M. Abdullah Al-Mamun and Safa Elkefi
Cancers 2025, 17(15), 2460; https://doi.org/10.3390/cancers17152460 - 25 Jul 2025
Viewed by 428
Abstract
Background: Gastrointestinal (GI) cancer patients face a four-fold higher suicide risk than the general US population. This study explores psychosocial aspects of GI cancer patient experiences, assessing suicidal ideation and behavior, mental distress during treatment phases, and psychosocial factors on mental health. Methods: [...] Read more.
Background: Gastrointestinal (GI) cancer patients face a four-fold higher suicide risk than the general US population. This study explores psychosocial aspects of GI cancer patient experiences, assessing suicidal ideation and behavior, mental distress during treatment phases, and psychosocial factors on mental health. Methods: A two-phase mixed-methods approach involved a web-based survey and follow-up interviews. Quantitative data analysis validated mental health and suicidal ideation constructs, and correlation analyses were performed. The patient journey was charted from diagnosis to treatment. Results: Two hundred and two individuals participated, with 76 from the rural Appalachian region and 78 undergoing treatments. Quantitative analysis showed a higher prevalence of passive suicidal ideation than active planning. The post-treatment recovery period was the most emotionally challenging. Qualitative data emphasized emotional support and vulnerability to isolation. Care quality concerns included individualized treatment plans and better communication. Patients also needed clear, comprehensive information about treatment and side effects. The in-depth interview with four GI cancer patients revealed a healthcare system prioritizing expedient treatment over comprehensive care, lacking formal psychological support. AI emerged as a promising avenue for enhancing patient understanding and treatment options. Conclusions: Our research advocates for a patient-centric model of care, enhanced by technology and empathetic communication. Full article
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16 pages, 4256 KiB  
Article
Physiological Stress Responses Associated with Microplastic Ingestion in the Benthic Flatfish Bothus podas
by Amanda Cohen-Sánchez, Montserrat Compa, Jessica Lombardo, Maria Magdalena Quetglas-Llabrés, Maria del Mar Ribas-Taberner, Manuel Jiménez-García, Silvia Tejada and Antoni Sureda
Toxics 2025, 13(7), 584; https://doi.org/10.3390/toxics13070584 - 13 Jul 2025
Viewed by 660
Abstract
Bothus podas (wide-eyed flounder) is a benthic flatfish likely exposed to microplastic (MP) pollution. We investigated MP ingestion and associated physiological effects in wild B. podas collected from Mallorca (Balearic Islands), Spain. Markers of oxidative stress, detoxification, and immunity were quantified in intestinal, [...] Read more.
Bothus podas (wide-eyed flounder) is a benthic flatfish likely exposed to microplastic (MP) pollution. We investigated MP ingestion and associated physiological effects in wild B. podas collected from Mallorca (Balearic Islands), Spain. Markers of oxidative stress, detoxification, and immunity were quantified in intestinal, hepatic, and splenic tissues. MPs were observed in the gastrointestinal tracts of 87.5% of the 24 specimens analyzed, with an average of 3.8 ± 0.6 items per fish. Fiber-type MPs predominated in both the gastrointestinal tract (69.6%) and sediment samples (97%). Additionally, micro-Fourier transform infrared spectroscopy analysis confirmed that the majority of ingested MPs were composed of polyethylene, polypropylene, and polyester. Fish were categorized into low (<3 items) and high (≥3 items) MP groups based on the median number of plastic items found in the gastrointestinal tract to assess sublethal impacts. In the gut, high-MP fish exhibited significantly elevated activities of detoxification enzymes: ethoxyresorufin-O-deethylase (phase I) and glutathione s-transferase (phase II), along with increased antioxidant enzyme superoxide dismutase and inflammatory myeloperoxidase. Gut catalase and malondialdehyde (MDA) were not significantly different between groups. In liver tissues, no biomarkers differed significantly with MP exposure. In the spleen, lysozyme and alkaline phosphatase activities were significantly higher in high-MP fish, while splenic MDA remained unchanged. These results indicate that gastrointestinal MP exposure triggers local oxidative stress responses and systemic immune activation in B. podas. Overall, ingestion of environmentally relevant MP levels elicited detoxification and inflammatory responses without significant increases in MDA, an indicator of oxidative damage, highlighting the physiological stress imposed by plastic pollution on benthic fish. Full article
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20 pages, 2935 KiB  
Article
Multilayer Double Emulsion Encapsulation of Limosilactobacillus reuteri Using Pectin-Protein Systems
by Kattya Rodríguez, Diego Catalán, Tatiana Beldarraín-Iznaga, Juan Esteban Reyes-Parra, Keyla Tortoló Cabañas, Marbelis Valdés Veliz and Ricardo Villalobos-Carvajal
Foods 2025, 14(14), 2455; https://doi.org/10.3390/foods14142455 - 12 Jul 2025
Viewed by 567
Abstract
The development of bakeable foods supplemented with probiotics requires novel strategies to preserve the functionality of probiotic cells during thermal and gastrointestinal stress conditions. The objective of the present study was to evaluate the protective effect of multilayer double emulsions (W1/O/W [...] Read more.
The development of bakeable foods supplemented with probiotics requires novel strategies to preserve the functionality of probiotic cells during thermal and gastrointestinal stress conditions. The objective of the present study was to evaluate the protective effect of multilayer double emulsions (W1/O/W2) stabilized with pectin-protein complexes on the viability of Limosilactobacillus reuteri (Lr) under thermal treatment (95 °C, 30 min), storage (4 °C, 28 d), and simulated gastrointestinal conditions. Emulsions were prepared with whey protein isolate (WPI) or sodium caseinate (Cas) as outer aqueous phase emulsifiers, followed by pectin coating and ionic gelation with calcium. All emulsions were stable and exhibited high encapsulation efficiency (>92%) with initial viable counts of 9 log CFU/mL. Double emulsions coated with ionically gelled pectin showed the highest protection against heat stress and gastrointestinal conditions due to the formation of a denser layer with lower permeability, regardless of the type of protein used as an emulsifier. At the end of storage, Lr viability exceeded 7 log CFU/mL in cross-linked pectin-coated microcapsules. These microcapsules maintained >6 log CFU/mL after thermal treatment, while viability remained >6.5 log CFU/mL during digestion and >5.0 log CFU/mL after consecutive heat treatment and simulated digestion. According to these results, the combination of double emulsion, multilayer formation and ionic crosslinking emerges as a promising microencapsulation technique. This approach offers enhanced protection for probiotics against extreme thermal and digestive conditions compared to previous studies that only use double emulsions. These findings support the potential application of this encapsulation method for the formulation of functional bakeable products. Full article
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21 pages, 506 KiB  
Article
Fermented Milk Supplemented with Sodium Butyrate and Inulin: Physicochemical Characterization and Probiotic Viability Under In Vitro Simulated Gastrointestinal Digestion
by Katarzyna Szajnar, Małgorzata Pawlos, Magdalena Kowalczyk, Julita Drobniak and Agata Znamirowska-Piotrowska
Nutrients 2025, 17(13), 2249; https://doi.org/10.3390/nu17132249 - 7 Jul 2025
Viewed by 781
Abstract
Background/Objectives: Probiotics are increasingly recognized for their role in managing gastrointestinal disorders through modulation of gut microbiota. Restoring microbial balance remains a therapeutic challenge. Recent strategies combine probiotics, inulin, and sodium butyrate as synergistic agents for gut health. This study aimed to evaluate [...] Read more.
Background/Objectives: Probiotics are increasingly recognized for their role in managing gastrointestinal disorders through modulation of gut microbiota. Restoring microbial balance remains a therapeutic challenge. Recent strategies combine probiotics, inulin, and sodium butyrate as synergistic agents for gut health. This study aimed to evaluate the effects of milk supplementation with inulin and sodium butyrate on physicochemical properties, sensory characteristics, and the survival of selected probiotic strains during in vitro simulated gastrointestinal digestion. Methods: Fermented milk samples were analyzed for color, pH, titratable acidity, and syneresis. A trained sensory panel evaluated aroma, texture, and acceptability. Samples underwent a standardized in vitro digestion simulating oral, gastric, and intestinal phases. Viable probiotic cells were counted before digestion and at each stage, and survival rates were calculated. Results: Physicochemical and sensory attributes varied depending on probiotic strain and supplementation. Inulin and the inulin–sodium butyrate combination influenced syneresis and acidity. Lacticaseibacillus casei 431 and Lactobacillus johnsonii LJ samples showed the highest viable counts before digestion. Two-way ANOVA confirmed that probiotic strain, supplementation type, and their interactions significantly affected bacterial survival during digestion (p < 0.05). Conclusions: The addition of inulin and sodium butyrate did not impair probiotic viability under simulated gastrointestinal conditions. The effects on product characteristics were strain-dependent (Bifidobacterium animalis subsp. lactis BB-12, L. casei 431, L. paracasei L26, L. acidophilus LA-5, L. johnsonii LJ). These findings support the use of inulin–butyrate fortification in dairy matrices to enhance the functional potential of probiotic foods targeting gut health. Full article
(This article belongs to the Special Issue Probiotics, Postbiotics, Gut Microbiota and Gastrointestinal Health)
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35 pages, 2830 KiB  
Article
The Safety of FeedKind Pet® (Methylococcus capsulatus, Bath) as a Cultured Protein Source in the Diet of Adult Dogs and Its Effect on Feed Digestibility, Fecal Microbiome, and Health Status
by Matt Longshaw, Bradley Quest, Walt Miller, Patricia M. Oba, Olivia R. Swanson, Kelly S. Swanson and Kathryn Miller
Animals 2025, 15(13), 1975; https://doi.org/10.3390/ani15131975 - 4 Jul 2025
Viewed by 773
Abstract
Thirty-two healthy adult dogs (16 males and 16 females) were fed control kibble diets for one month, followed by six months (Weeks 0 to 25) of diets containing either 0, 4, 6, or 8% cultured protein derived from Methylococcus capsulatus (FeedKind Pet® [...] Read more.
Thirty-two healthy adult dogs (16 males and 16 females) were fed control kibble diets for one month, followed by six months (Weeks 0 to 25) of diets containing either 0, 4, 6, or 8% cultured protein derived from Methylococcus capsulatus (FeedKind Pet®, FK), then they were fed control diets (0% FK) for a further two months (Weeks 25 to 34). The diets were isonitrogenous, isolipidic, and isocaloric and stage- and age-specific. The dogs were assessed for overall health, weight gain, and body condition score (BCS). Blood samples were collected 1 week prior to randomization, during acclimation, then in Weeks 5, 13, 25, 30, 32, and 34 for hematology, coagulation, and clinical chemistry; urine was collected according to the same time schedule for urinalysis. Feces were assessed for parasite load and presence of occult blood during Weeks 5, 9, 13, 17, 21, and 25. Fecal samples were collected during acclimation and Weeks 25 and 34 for fecal microbiome analysis and in Week 25 for apparent total gastrointestinal tract digestibility (ATTD). All dogs maintained a healthy weight and BCS throughout the study. Hematology parameters were within normal limits at the end of each phase of the study. With the exception of a decrease in serum phosphorus level and in urine pH in all groups at the end of the study, urine and serum chemistry results were within normal limits at the end of each phase. ATTD values for organic matter, protein, and energy exceeded 80%, whilst digestibility values for copper were around 20%. The fecal microbiome was dominated by Firmicutes. Alpha diversity increased during the safety phase before returning to baseline levels during the washout phase. The dominant genera in all groups were Megamonas, Peptoclostridium, Turicibacter, Catenibacterium, Fusobacterium, Romboutsia, and Blautia. The study has shown that the inclusion of cultured protein at up to 8% of the total diet of adult dogs can provide sufficient nutrition and is safe with no long-term effects on a range of health parameters. Full article
(This article belongs to the Section Animal Nutrition)
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9 pages, 475 KiB  
Communication
Expanded Access Use of Sanguinate Saves Lives: Over 100 Cases Including 14 Previously Published Cases
by Jonathan S. Jahr, Ronald Jubin, Zhen Mei, Joseph Giessinger, Rubie Choi and Abe Abuchowski
Anesth. Res. 2025, 2(3), 15; https://doi.org/10.3390/anesthres2030015 - 29 Jun 2025
Viewed by 398
Abstract
Background: PP-007 (SANGUINATE®, PEGylated carboxyhemoglobin, bovine) is under development to treat conditions of ischemia/hypoxia. Hemorrhagic/hypovolemic shock (H/HVS) becomes a life-threatening comorbidity due in part to hypotension and hypoxia. Blood transfusions are indicated, but supply and compatibility issues may limit subject access [...] Read more.
Background: PP-007 (SANGUINATE®, PEGylated carboxyhemoglobin, bovine) is under development to treat conditions of ischemia/hypoxia. Hemorrhagic/hypovolemic shock (H/HVS) becomes a life-threatening comorbidity due in part to hypotension and hypoxia. Blood transfusions are indicated, but supply and compatibility issues may limit subject access or when blood is not an option due to religious restriction or concern for clinical complications. PP-007 is universally compatible with an effective hydrodynamic radius and colloidal osmotic pressure facilitating perfusion without promoting extravasation. Methods: A review of previous clinical trials was performed and revealed an Open-Label Phase 1 safety study of acute severe anemia (hemoglobin ≤ 5 g/dL) in adult (≥18 y) patients unable to receive red blood cell transfusion (NCT02754999). Primary outcomes included safety events with secondary efficacy measures of organ function and survival at 1, 14, and 28 days. Additionally, a retrospective review of published, peer-reviewed case reports was performed, evaluating the administration of Sanguinate for Expanded Access in those patient populations where blood was not an option over the past 12 years. Results: A total of 103 subjects were enrolled in the Phase I safety study with significant co-morbidities that most commonly included hypertension (n = 43), acute and chronic kidney disease (n = 38), diabetes mellitus (n = 29), gastrointestinal bleeds (n = 18), and sickle cell disease (n = 13). Enrollment characteristics included decreased hemoglobin and severe anemia (mean baseline hemoglobin of 4.2 g/dL). Treatments included an average of three infusions [range 1–17]. Secondary efficacy measures were mean Hb levels, respiratory support, and vasopressor requirements, all demonstrating clinically relevant improvements. Fourteen additional cases were identified in the literature. Though one patient died due to pre-treatment conditions, all patients but one were discharged home in stable condition. Conclusion: Collectively, these observations are encouraging and provide support for the continued evaluation of PP-007 in advanced clinical trials in severe anemia including H/HVS. The review of published case reports underscored the potential of Sanguinate to reduce early mortality. Adverse effects included transient hypertension, lethargy, dizziness, and troponin elevation. These findings highlight the need for continued research and funding of blood alternatives to improve outcomes when standard blood transfusions are unavailable or contraindicated. Full article
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17 pages, 1364 KiB  
Article
Droplet Size Reduction of Self-Emulsifying Drug Delivery System (SEDDS) Using the Hybrid of Medium and Long-Chain Triglycerides
by Kaijie Qian, Yuanyuan Lin, Bingxiang Zhao and Xiangrui Liu
Pharmaceutics 2025, 17(7), 822; https://doi.org/10.3390/pharmaceutics17070822 - 25 Jun 2025
Viewed by 690
Abstract
Background: Self-emulsifying drug delivery system (SEDDS) is widely used to improve the oral bioavailability of hydrophobic drugs. Emulsion droplet size was revealed to be a critical parameter that influences the thermodynamic stability, drug solubility, and drug absorption of the SEDDS. A high proportion [...] Read more.
Background: Self-emulsifying drug delivery system (SEDDS) is widely used to improve the oral bioavailability of hydrophobic drugs. Emulsion droplet size was revealed to be a critical parameter that influences the thermodynamic stability, drug solubility, and drug absorption of the SEDDS. A high proportion of surfactant and/or co-surfactant was usually employed to reduce the particle size, which may lead the low drug loading and undesirable gastrointestinal toxicity. Methods: This manuscript proposed a novel strategy to reduce the particle size of emulsions using the hybrid of medium and long-chain triglyceride (MCT and LCT) SEDDS without promoting the concentration of surfactants and co-surfactants. The composition of SEDDS was selected based on the drug solubility. Particle size distribution and zeta potential of emulsion particles were determined using the dynamic light scattering technique. The bioavailability of formulations was evaluated in a mouse model. Results: The particle size of the emulsion was reduced from 113.50 ± 0.34 nm (MCT SEDDS) and 371.60 ± 6.90 nm (LCT SEDDS) to 21.23 ± 0.30 nm (MCT&LCT SEDDS). Progesterone, a poorly water-soluble drug, was selected as the model drug in the investigation of SEDDS. The hybrid of MCT&LCT progesterone SEDDS exhibited reduced particle size, enlarged self-emulsifying ranges, and increased drug content in the aqueous phase after lipolysis compared with the conventional mono-MCT or LCT SEDDS. In addition, the bioavailability of progesterone in the MCT&LCT SEDDS formulation was 3.82-fold higher than that of Utrogestan® (a clinical oral administrated product) in a mouse model. Full article
(This article belongs to the Section Drug Delivery and Controlled Release)
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18 pages, 7396 KiB  
Article
Comparative Gastrointestinal Digestion Dynamics of Air-Dried and Freeze-Dried Yak Jerky: Insights from a Dynamic In Vitro Human Stomach–Intestine (DHSI-IV) System
by Bei Xue, Zhendong Liu, Yiling Wen, Yubing Lu, Yidan Zhang, Jingjing Wang, Xiao Dong Chen and Peng Wu
Foods 2025, 14(12), 2086; https://doi.org/10.3390/foods14122086 - 13 Jun 2025
Viewed by 762
Abstract
Yak meat jerky, a traditional high-protein food commonly consumed in high-altitude regions, is often produced via air-drying, which may adversely affect its nutritional quality and digestibility. This study systematically compared the gastrointestinal digestion profiles of air-dried yak meat (ADM) and vacuum freeze-dried yak [...] Read more.
Yak meat jerky, a traditional high-protein food commonly consumed in high-altitude regions, is often produced via air-drying, which may adversely affect its nutritional quality and digestibility. This study systematically compared the gastrointestinal digestion profiles of air-dried yak meat (ADM) and vacuum freeze-dried yak meat (VFDM) using a dynamic in vitro human stomach–intestine (DHSI-IV) system. Key digestive parameters, including gastric emptying kinetics, particle size distribution, and protein hydrolysis, were evaluated under physiologically relevant conditions. VFDM exhibited superior hydration capacity, contributing to delayed gastric emptying of the mixed solid–liquid phase (t1/2 = 85.1 ± 1.0 min) compared to ADM (t1/2 = 80.4 ± 1.2 min), indicating increased gastric satiety. Conversely, VFDM showed a faster solid-phase gastric emptying (t1/2 = 107.2 ± 0.8 min) relative to ADM (t1/2 = 113.1 ± 2.7 min), likely due to improved texture and rehydration. Both jerky types exhibited progressive particle disintegration; by 180 min, large particles (>2.0 mm) decreased to 16.88% ± 2.63% in ADM and 20.04% ± 0.64% in VFDM (p > 0.05). Protein digestibility, measured by SDS-PAGE and the degree of hydrolysis (DH), was significantly higher in VFDM (38.5 ± 3.6%) than in ADM (34.0 ± 0.1%, p < 0.05), with VFDM demonstrating more rapid and extensive protein degradation across gastric and intestinal phases. These improvements may be attributed to the porous microstructure and reduced processing-induced protein cross-linking in VFDM, facilitating enhanced enzyme access. Overall, vacuum freeze-drying substantially improved yak jerky protein digestibility, offering the potential for the development of meat-based functional foods targeted at individuals with compromised gastrointestinal function. Full article
(This article belongs to the Special Issue Meat Products: Processing and Storage)
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24 pages, 2661 KiB  
Review
Oral Small-Molecule GLP-1 Receptor Agonists: Mechanistic Insights and Emerging Therapeutic Strategies
by Héctor Iván Saldívar-Cerón, Jorge Arturo Vargas-Camacho, Sonia León-Cabrera, Paola Briseño-Díaz, Ari Evelyn Castañeda-Ramírez, Axel Eduardo Muciño-Galicia and María Regina Díaz-Domínguez
Sci. Pharm. 2025, 93(2), 26; https://doi.org/10.3390/scipharm93020026 - 11 Jun 2025
Viewed by 5032
Abstract
Small-molecule glucagon-like peptide-1 receptor agonists (GLP-1RAs) represent an innovative advancement in oral therapeutics, addressing key limitations associated with injectable peptide-based incretin therapies. These nonpeptidic agents exert their actions primarily through non-canonical binding orthosteric sites within the GLP-1 receptor transmembrane domain, enabling selective G [...] Read more.
Small-molecule glucagon-like peptide-1 receptor agonists (GLP-1RAs) represent an innovative advancement in oral therapeutics, addressing key limitations associated with injectable peptide-based incretin therapies. These nonpeptidic agents exert their actions primarily through non-canonical binding orthosteric sites within the GLP-1 receptor transmembrane domain, enabling selective G protein (Gs)-biased signaling with reduced β-arrestin-mediated adverse effects. Orforglipron has notably advanced through Phase 3 clinical development, demonstrating significant reductions in hemoglobin A1c and body weight (up to 7.9%) with favorable tolerability. Conversely, promising candidates such as danuglipron and lotiglipron were discontinued due to hepatotoxicity, underscoring critical safety concerns intrinsic to small-molecule GLP-1RA development. Current clinical candidates, including GSBR-1290, CT-996, and ECC5004, continue to offer substantial potential due to their oral bioavailability, simplified dosing regimens, and favorable gastrointestinal tolerability. Nevertheless, challenges persist regarding hepatic safety, pharmacodynamic variability, and limited long-term outcome data. This review integrates current structural, pharmacological, and clinical evidence, highlights key mechanistic innovations—including biased agonism, covalent binding strategies, and allosteric modulation—and discusses future directions for this rapidly evolving therapeutic class in metabolic disease management. Full article
(This article belongs to the Topic Research in Pharmacological Therapies, 2nd Edition)
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