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Search Results (261)

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17 pages, 391 KiB  
Article
A Comparative Study of Paralympic Veterans with Either a Spinal Cord Injury or an Amputation: Implications for Personalized Nutritional Advice
by Ilaria Peluso, Anna Raguzzini, Elisabetta Toti, Gennaro Boccia, Roberto Ferrara, Diego Munzi, Paolo Riccardo Brustio, Alberto Rainoldi, Valentina Cavedon, Chiara Milanese, Tommaso Sciarra and Marco Bernardi
J. Funct. Morphol. Kinesiol. 2025, 10(3), 305; https://doi.org/10.3390/jfmk10030305 - 6 Aug 2025
Abstract
Background: Dietary advice for Paralympic athletes (PAs) with a spinal cord injury (PAs-SCI) requires particular attention and has been widely studied. However, currently, no particular attention has been addressed to nutritional guidelines for athletes with an amputation (PAs-AMP). This study aimed at [...] Read more.
Background: Dietary advice for Paralympic athletes (PAs) with a spinal cord injury (PAs-SCI) requires particular attention and has been widely studied. However, currently, no particular attention has been addressed to nutritional guidelines for athletes with an amputation (PAs-AMP). This study aimed at filling up this gap, at least partially, and compared veteran PAs-SCI with PAs-AMP. Methods: A sample of 25 male PAs (12 with SCI and 13 with AMP), recruited during two training camps, was submitted to the following questionnaires: allergy questionnaire for athletes (AQUA), Nordic Musculoskeletal Questionnaire (NMQ), Starvation Symptom Inventory (SSI), neurogenic bowel dysfunction (NBD), orthorexia (ORTO-15/ORTO-7), alcohol use disorders identification test (AUDIT), and Mediterranean diet adherence (MDS). The PAs were also submitted to the following measurements: dietary Oxygen Radical Absorbance Capacity (ORAC) and intakes, body composition, handgrip strength (HGS), basal energy expenditure (BEE), peak oxygen uptake (VO2peak), peak power, peak heart rate (HR), post-exercise ketosis, and antioxidant response after a cardiopulmonary exercise test (CPET) to voluntary fatigue. Results: Compared to PAs-AMP, PAs-SCI had higher NBD and lower VO2peak (p < 0.05), peak power, peak HR, peak lactate, phase angle (PhA) of the dominant leg (p < 0.05), and ORTO15 (p < 0.05). The latter was related to NBD (r = −0.453), MDS (r = −0.638), and ORAC (r = −0.529), whereas ORTO7 correlated with PhA of the dominant leg (r = 0.485). Significant differences between PAs-AMP and PAs-SCI were not found in the antioxidant response, glucose, and ketone levels after CPET, nor in dietary intake, AUDIT, AQUA, NMQ, SSI, BEE, HGS, and FM%. Conclusions: The present study showed that PAs-SCI and PAs-AMP display similar characteristics in relation to lifestyle, energy intake, basal energy expenditure, and metabolic response to CPET. Based on both the similarities with PAs-SCI and the consequences of the limb deficiency impairment, PAs-AMP and PAs-SCI require personalized nutritional advice. Full article
(This article belongs to the Special Issue New Perspectives and Challenges in Adapted Sports)
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23 pages, 1084 KiB  
Review
Unraveling the Translational Relevance of β-Hydroxybutyrate as an Intermediate Metabolite and Signaling Molecule
by Dwifrista Vani Pali, Sujin Kim, Keren Esther Kristina Mantik, Ju-Bi Lee, Chan-Young So, Sohee Moon, Dong-Ho Park, Hyo-Bum Kwak and Ju-Hee Kang
Int. J. Mol. Sci. 2025, 26(15), 7362; https://doi.org/10.3390/ijms26157362 - 30 Jul 2025
Viewed by 467
Abstract
β-hydroxybutyrate (BHB) is the most abundant ketone body produced during ketosis, a process initiated by glucose depletion and the β-oxidation of fatty acids in hepatocytes. Traditionally recognized as an alternative energy substrate during fasting, caloric restriction, and starvation, BHB has gained attention for [...] Read more.
β-hydroxybutyrate (BHB) is the most abundant ketone body produced during ketosis, a process initiated by glucose depletion and the β-oxidation of fatty acids in hepatocytes. Traditionally recognized as an alternative energy substrate during fasting, caloric restriction, and starvation, BHB has gained attention for its diverse signaling roles in various physiological processes. This review explores the emerging therapeutic potential of BHB in the context of sarcopenia, metabolic disorders, and neurodegenerative diseases. BHB influences gene expression, lipid metabolism, and inflammation through its inhibition of Class I Histone deacetylases (HDACs) and activation of G-protein-coupled receptors (GPCRs), specifically HCAR2 and FFAR3. These actions lead to enhanced mitochondrial function, reduced oxidative stress, and regulation of inflammatory pathways, with implication for muscle maintenance, neuroprotection, and metabolic regulation. Moreover, BHB’s ability to modulate adipose tissue lipolysis and immune responses highlight its broader potential in managing chronic metabolic conditions and aging. While these findings show BHB as a promising therapeutic agent, further research is required to determine optimal dosing strategies, long-term effects, and its translational potential in clinical settings. Understanding BHB’s mechanisms will facilitate its development as a novel therapeutic strategy for multiple organ systems affected by aging and disease. Full article
(This article belongs to the Special Issue Molecular Mechanisms and Therapies in Skeletal Muscle Diseases)
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14 pages, 1004 KiB  
Article
Beyond Weight Loss: Comparative Effects of Tirzepatide Plus Low-Energy Ketogenic Versus Low-Calorie Diet on Hepatic Steatosis and Stiffness in MASLD
by Luigi Schiavo, Biagio Santella, Monica Mingo, Gianluca Rossetti, Marcello Orio and Vincenzo Pilone
Nutrients 2025, 17(15), 2409; https://doi.org/10.3390/nu17152409 - 24 Jul 2025
Viewed by 453
Abstract
Background: Metabolic dysfunction-associated steatotic liver disease (MASLD) is the most common chronic liver condition globally, strongly linked to obesity, insulin resistance, and type 2 diabetes (T2D). Tirzepatide (TZP), a dual GIP/GLP-1 receptor agonist, improves glycemic control and reduces body weight and the [...] Read more.
Background: Metabolic dysfunction-associated steatotic liver disease (MASLD) is the most common chronic liver condition globally, strongly linked to obesity, insulin resistance, and type 2 diabetes (T2D). Tirzepatide (TZP), a dual GIP/GLP-1 receptor agonist, improves glycemic control and reduces body weight and the liver fat content in patients with obesity and T2D. However, its effect on liver-specific outcomes such as steatosis and fibrosis remains incompletely characterized. Low-energy ketogenic therapy (LEKT), a nutritional strategy characterized by carbohydrate restriction and nutritional ketosis, may enhance hepatic β-oxidation and reduce hepatic lipogenesis. To date, however, the combination of TZP and LEKT has not been studied in patients with metabolic dysfunction-associated steatotic liver disease (MASLD). This study aimed to compare the hepatic and metabolic effects of TZP combined with either LEKT or a conventional low-calorie diet (LCD) over a 12-week period. Methods: Sixty adult patients with MASLD undergoing TZP therapy were prospectively assigned to either an LEKT or a conventional LCD, with 30 participants per group. As primary endpoints, the controlled attenuation parameter (CAP, an index of hepatic steatosis) and liver stiffness measurement (LSM, an index of liver fibrosis) were assessed at the baseline and after 12 weeks using FibroScan®. Secondary outcomes included changes in body mass index (BMI), glycated hemoglobin (HbA1c), and liver enzymes. Adherence to both diet and pharmacological treatment, as well as tolerability, were systematically monitored throughout the intervention period. Results: Both groups showed significant reductions in body weight (TZP + LEKT, p = 0.0289; TZP + LCD, p = 0.0278), with no significant intergroup difference (p = 0.665). CAP and LSM improved significantly in both groups, but reductions were greater in the TZP + LEKT group (CAP −12.5%, p < 0.001; LSM −22.7%, p < 0.001) versus LCD (CAP −6.7%, p = 0.014; LSM −9.2%, p = 0.022). Between-group differences were statistically significant for both CAP (p = 0.01) and LSM (p = 0.03). Conclusions: Based on these preliminary findings, we support the hypothesis that the combination of TZP and LEKT may be superior to TZP with an LCD in reducing hepatic steatosis and stiffness in individuals with obesity. Full article
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24 pages, 3430 KiB  
Article
Differential Impact of Zearalenone on Hepatic Glucose and Lipid Metabolism in Healthy and Ketotic Dairy Cows: An In Vitro Study
by Justyna Barć, Zygmunt Maciej Kowalski and Wojciech Jagusiak
Int. J. Mol. Sci. 2025, 26(14), 6827; https://doi.org/10.3390/ijms26146827 - 16 Jul 2025
Viewed by 177
Abstract
Zearalenone (ZEN), a mycotoxin commonly present in maize-based feed, poses a health risk to dairy cows. While the hepatic effects of ZEN are increasingly studied, little is known about its impact on cows with altered energy metabolism. This study investigated the transcriptional response [...] Read more.
Zearalenone (ZEN), a mycotoxin commonly present in maize-based feed, poses a health risk to dairy cows. While the hepatic effects of ZEN are increasingly studied, little is known about its impact on cows with altered energy metabolism. This study investigated the transcriptional response of liver cells isolated from healthy and ketotic cows to ZEN exposure using a novel in vitro model. Hepatocytes were obtained via biopsy from 12 cows, cultured under standardized conditions, and exposed to ZEN (0–100 µM) for 1, 3, and 6 h. Gene expression analysis focused on targets related to glucose and lipid metabolism. ZEN induced time- and dose-dependent changes in gene expression, with the most prominent effects observed after 1 h. Key metabolic genes were differentially regulated depending on the cow’s metabolic status. Notably, hepatocytes from healthy cows showed a stronger transcriptional response than those from ketotic cows, indicating reduced metabolic adaptability in energy-compromised animals. Significant interaction effects between ZEN dose and metabolic status were observed, especially for genes involved in glycolysis and fatty acid metabolism. This study presents a novel in vitro model and emphasizes the need to consider metabolic health when assessing the risks of mycotoxin exposure in dairy cattle. Full article
(This article belongs to the Section Molecular Toxicology)
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24 pages, 1344 KiB  
Article
Field Evaluation of Liver Ultrasound Measurements and Biochemical and Metabolic Parameters During the Transition Period in Dairy Cows
by Giorgia Taio, Anastasia Lisuzzo, Silvia Bordin, Matteo Gianesella, Igino Andrighetto, Giorgio Marchesini and Enrico Fiore
Animals 2025, 15(14), 2013; https://doi.org/10.3390/ani15142013 - 8 Jul 2025
Viewed by 281
Abstract
Ketosis and fatty liver syndrome are metabolic disorders apparent in dairy cows during the transition period. The study focused on examining how varying levels of milk production in dairy cows might reflect or influence specific blood biochemical markers and liver health as assessed [...] Read more.
Ketosis and fatty liver syndrome are metabolic disorders apparent in dairy cows during the transition period. The study focused on examining how varying levels of milk production in dairy cows might reflect or influence specific blood biochemical markers and liver health as assessed through ultrasonography. A total of 65 Holstein-Friesian cows from six farms were evaluated at three time points as follows: 7 days before expected calving and at 7 and 21 ± 3 days postpartum. Each evaluation included the body condition score (BCS), blood sampling for biochemical analysis, and liver ultrasonography. Based on average farm milk yield, cows were divided into three production groups as follows: GR1 (38.4 ± 6.45 L/day, n = 23), GR2 (42.9 ± 2.77 L/day, n = 24), and GR3 (45.69 ± 7.49 L/day, n = 18). Parameters assessed included liver lipid content and ultrasonographic measurements such as portal vein diameter and depth, liver depth, and liver angle. Significant time-dependent changes were observed in liver size, fat metabolism, and electrolyte balance, especially postpartum. However, no significant differences emerged among the production groups, indicating that these changes likely represent physiological adaptations to lactation. These findings support the use of blood analysis and ultrasonography as practical, minimally invasive tools for routine metabolic health monitoring in dairy cows during the transition period. Full article
(This article belongs to the Section Animal Physiology)
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18 pages, 3475 KiB  
Article
A Microsphere-Based Sensor for Point-of-Care and Non-Invasive Acetone Detection
by Oscar Osorio Perez, Ngan Anh Nguyen, Landon Denham, Asher Hendricks, Rodrigo E. Dominguez, Eun Ju Jeong, Marcio S. Carvalho, Mateus Lima, Jarrett Eshima, Nanxi Yu, Barbara Smith, Shaopeng Wang, Doina Kulick and Erica Forzani
Biosensors 2025, 15(7), 429; https://doi.org/10.3390/bios15070429 - 3 Jul 2025
Viewed by 500
Abstract
Ketones, which are key biomarkers of fat oxidation, are relevant for metabolic health maintenance and disease development, making continuous monitoring essential. In this study, we introduce a novel colorimetric sensor designed for potential continuous acetone detection in biological fluids. The sensor features a [...] Read more.
Ketones, which are key biomarkers of fat oxidation, are relevant for metabolic health maintenance and disease development, making continuous monitoring essential. In this study, we introduce a novel colorimetric sensor designed for potential continuous acetone detection in biological fluids. The sensor features a polydimethylsiloxane (PDMS) shell that encapsulates a sensitive and specific liquid-core acetone-sensing probe. The microsphere sensors were characterized by evaluating their size, PDMS shell thickness, colorimetric response, and sensitivity under realistic conditions, including 100% relative humidity (RH) and CO2 interference. The microsphere size and sensor sensitivity can be controlled by modifying the fabrication parameters. Critically, the sensor showed high selectivity for acetone detection, with negligible interference from CO2 concentrations up to 4%. In addition, the sensor displayed good reproducibility (CV < 5%) and stability under realistic storage conditions (over two weeks at 4 °C). Finally, the accuracy of the microsphere sensor was validated against a gold standard gas chromatography-mass spectrometry (GC-MS) method using simulated and real breath samples from healthy individuals and type 1 diabetes patients. The correlation between the microsphere sensor and GC-MS produced a linear fit with a slope of 0.948 and an adjusted R-squared value of 0.954. Therefore, the liquid-core microsphere-based sensor is a promising platform for acetone body fluid analysis. Full article
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18 pages, 1571 KiB  
Article
Genetic Parameters, Linear Associations, and Genome-Wide Association Study for Endotoxin-Induced Cortisol Response in Holstein heifers
by Bruno A. Galindo, Umesh K. Shandilya, Ankita Sharma, Flavio S. Schenkel, Angela Canovas, Bonnie A. Mallard and Niel A. Karrow
Animals 2025, 15(13), 1890; https://doi.org/10.3390/ani15131890 - 26 Jun 2025
Viewed by 328
Abstract
Lipopolysaccharide (LPS) endotoxin is a well-characterized microbe-associated molecular pattern (MAMP) that forms the outer membrane of both pathogenic and commensal Gram-negative bacteria. It plays a crucial role in triggering inflammatory disorders such as mastitis, acidosis, and septicemia. In heifers, an LPS challenge induces [...] Read more.
Lipopolysaccharide (LPS) endotoxin is a well-characterized microbe-associated molecular pattern (MAMP) that forms the outer membrane of both pathogenic and commensal Gram-negative bacteria. It plays a crucial role in triggering inflammatory disorders such as mastitis, acidosis, and septicemia. In heifers, an LPS challenge induces a dynamic stress response, marked by elevated cortisol levels, increased body temperature, and altered immune function. Research indicates that LPS administration leads to a significant rise in cortisol post-challenge. Building on this understanding, the present study aimed to estimate genetic parameters for serum cortisol response to LPS challenge in Holstein heifers and its linear associations with production, health, reproduction, and conformation traits. Additionally, a genome-wide association study (GWAS) was conducted to identify genetic regions associated with cortisol response. A total of 252 animals were evaluated for cortisol response, with correlations estimated between cortisol levels and 55 genomic breeding values for key traits. Genetic parameters and heritability for cortisol response were estimated using Residual Maximum Likelihood (REML) in the Blupf90+ v 2.57 software. Single-Step GWAS (ssGWAS) employing a 10-SNP window approach and 42,123 SNP markers was performed to identify genomic regions that explained at least 0.5% of additive genetic variance. Finally, candidate genes and QTLs located 50 kb up and downstream of those windows were identified. The cortisol response showed significant but weak linear associations with cystic ovaries, body maintenance requirements, lactation persistency, milk yield, and protein yield (p-value ≤ 0.05) and showed suggestive weak linear associations with udder texture, clinical ketosis, heel horn erosion, and milking speed (p-value ≤ 0.15). Cortisol response showed significant additive genetic variance, along with moderate heritability of 0.26 (±0.19). A total of 34 windows explained at least 0.5% of additive genetic variance, and 75 QTLs and 11 candidate genes, comprising the genes CCL20, DAW1, CSMD2, HMGB4, B3GAT2, PARD3, bta-mir-2285aw, CFH, CDH2, ENSBTAG00000052242, and ENSBTAG00000050498, were identified. The functional enrichment analysis allowed us to infer two instances where these gene products could interfere with cortisol production: the first instance is related to the complement system, and the second one is related to the EMT (Epithelium–Mesenchymal Transition) and pituitary gland formation. Among the QTLs, 13 were enriched in the dataset, corresponding to traits related to milk (potassium content), the exterior (udder traits, teat placement, foot angle, rear leg placement, and feet and leg conformation), production (length of productive life, net merit, and type), and reproduction (stillbirth and calving ease). In summary, the cortisol response to LPS challenge in Holstein heifers seems to be moderately heritable and has weak but significant linear associations with important production and health traits. Several candidate genes identified could perform important roles, in at least two ways, for cortisol production, and QTLs were identified close to regions of the genome that explained a significant amount of additive genetic variance for cortisol response. Therefore, further investigations are warranted to validate these findings with a larger dataset. Full article
(This article belongs to the Special Issue Genetic Analysis of Important Traits in Domestic Animals)
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18 pages, 1000 KiB  
Article
Diabetic Ketoacidosis Is Associated with Lower Serum Sphingolipids but Higher β-Hydroxybutyrate and Lactate: A Pilot Study
by Ibrahim Aslan, Tuğçe Çeker, Tayfun Ustabaş, Vuslat Zorlu, Çağatay Yılmaz and Mutay Aslan
Pathophysiology 2025, 32(3), 29; https://doi.org/10.3390/pathophysiology32030029 - 26 Jun 2025
Viewed by 398
Abstract
Background/Objectives: Diabetic ketoacidosis (DKA) is an acute and severe complication of diabetes mellitus, marked by hyperglycemia, ketosis, and acidosis. It is associated with significant metabolic and inflammatory adjustments that can impact multiple biochemical pathways. This study aimed to determine the serum sphingolipid [...] Read more.
Background/Objectives: Diabetic ketoacidosis (DKA) is an acute and severe complication of diabetes mellitus, marked by hyperglycemia, ketosis, and acidosis. It is associated with significant metabolic and inflammatory adjustments that can impact multiple biochemical pathways. This study aimed to determine the serum sphingolipid profile in DKA and investigate its relationship with neutral sphingomyelinase (N-SMase), pro-inflammatory cytokines, β-hydroxybutyrate (β-OHB), and lactate levels. Methods: Thirty-three participants were divided into three groups: control (BMI ≤ 30, no health issues), obese (BMI > 30), and DKA (BMI ≤ 30). Sphingomyelins (16:0–24:0 SMs) and ceramides (C16–C24 CERs) were measured using ultra-fast liquid chromatography combined with tandem mass spectrometry (LC-MS/MS). N-SMase, interleukin 1 beta (IL-1β), and tumor necrosis factor alpha (TNF-α) levels were assessed by enzyme-linked immunosorbent assay. Evaluations were done in the DKA group before and after standard clinical treatment for DKA (post-DKA group), which included intravenous insulin therapy, fluid resuscitation, and electrolyte replacement, as per established clinical guidelines. Results: β-OHB levels were significantly higher in the DKA group than in the control, obese, and post-DKA groups. Although β-OHB levels decreased in the post-DKA group, they remained elevated compared to the control and obese groups. Lactate levels were also higher in the DKA group, with a significant decrease in the post-DKA group. TNF-α and IL-1β were higher in the obese group compared to control and DKA groups, and TNF-α decreased significantly in the post-DKA group compared to DKA. N-SMase, 16:0–18:0 SMs, and C18-C24 CER levels were lower in the DKA and post-DKA groups compared to obese and control groups. Serum β-OHB and lactate levels were significantly correlated with S1P, total CER, total SM, and N-SMase values. Conclusions: The study reveals significant metabolic and inflammatory differences in DKA and post-DKA states, suggesting a relationship between sphingolipids, N-SMase, and these alterations, which could offer insights into DKA pathophysiology and therapeutic targets. Full article
(This article belongs to the Section Metabolic Disorders)
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14 pages, 257 KiB  
Review
Low-Carb and Ketogenic Diets in Type 1 Diabetes: Efficacy and Safety Concerns
by Emmanouil Korakas, Aikaterini Kountouri, Goran Petrovski and Vaia Lambadiari
Nutrients 2025, 17(12), 2001; https://doi.org/10.3390/nu17122001 - 14 Jun 2025
Viewed by 1431
Abstract
Despite advances in technology, the overall management of type 1 diabetes mellitus (T1DM) remains suboptimal. The idea of restricting carbohydrate intake to decrease glycemic spikes and insulin requirements has been revisited in recent years. After impressive results in the fields of type 2 [...] Read more.
Despite advances in technology, the overall management of type 1 diabetes mellitus (T1DM) remains suboptimal. The idea of restricting carbohydrate intake to decrease glycemic spikes and insulin requirements has been revisited in recent years. After impressive results in the fields of type 2 diabetes (T2DM) and epilepsy, low-carbohydrate (LCD) and ketogenic (KD) diets have gained renewed interest as a possible treatment option for T1DM. In this narrative review, we discuss the available data regarding LCDs and KDs in both the adult and pediatric populations. Research data is still scarce, as most studies are short-term and show considerable heterogeneity in dietary composition and patient outcomes. In general, carbohydrate restriction enhances glycemic control by reducing postprandial glucose excursions, improving time-in-range, and lowering HbA1c, with conflicting effects on other parameters such as lipid profile and body weight. Adverse effects such as hypoglycemia and diabetic ketoacidosis are rarely reported, although some concerns have been raised regarding growth in children. The correct implementation of these diets requires a multidisciplinary approach by highly specialized healthcare professionals, who will address the medical, social, and psychological concerns that a restrictive diet entails. Large-scale and long-term studies are needed to provide more robust data before carbohydrate restriction can be widely applied to patients with T1DM. Full article
(This article belongs to the Special Issue Advances in Nutrition and Lifestyle Interventions for Type 1 Diabetes)
12 pages, 651 KiB  
Article
Previous Lactation Risk Factors Associated with Hyperketonemia in the First Week Postpartum in Dairy Cows: A Retrospective Analysis
by Mahmoud H. Emam, Abdelmonem Abdallah, Elise Shepley and Luciano S. Caixeta
Dairy 2025, 6(3), 28; https://doi.org/10.3390/dairy6030028 - 13 Jun 2025
Viewed by 490
Abstract
Hyperketonemia (HYK) is a common disorder in high-producing dairy cows, resulting in significant economic losses. Defined by elevated beta-hydroxybutyrate (BHB; ≥1.2 mmol/L) without clinical signs, HYK is often considered a gateway disease, predisposing cows to other metabolic and infectious problems. Our objective was [...] Read more.
Hyperketonemia (HYK) is a common disorder in high-producing dairy cows, resulting in significant economic losses. Defined by elevated beta-hydroxybutyrate (BHB; ≥1.2 mmol/L) without clinical signs, HYK is often considered a gateway disease, predisposing cows to other metabolic and infectious problems. Our objective was to investigate the association between previous lactation risk factors and both BHB concentration and HYK status during the first week postpartum in the subsequent lactation. A retrospective study was conducted using previously collected blood samples from 2336 Holstein multiparous dairy cows from 7 dairy herds, where BHB concentration was measured during the first week postpartum. Data from the previous lactation were extracted from electronic farm records. Log-transformed BHB concentrations and HYK status were each modeled using separate linear mixed models. Both models included the same set of risk factors—lactation, previous lactation total times bred, dry length period, previous lactation days in milk, previous lactation days open, previous lactation days carried calf, previous lactation peak milk production, previous lactation total milk production, previous lactation total milk fat, and previous lactation total milk protein—to investigate their association with these outcomes. Potential confounding variables were offered to the models, and stepwise backward elimination was used to determine which covariates to retain. Significant associations were detected between BHB concentration and dry period length (DDRY), lactation number (LACT), previous lactation total milk protein (TOTP), and previous lactation days open (PDOPN). Inclusive, significant associations were detected between HYK status and previous lactation total milk production (PTOTM), DDRY, LACT, TOTP, and PDOPN. Our results suggest that a dry period longer than 60 days, days open exceeding 130 days, being in their third or greater lactation, and each additional 1000 kg of milk produced in the previous lactation are associated with an increased risk of having high BHB and HYK in the first week postpartum in the subsequent lactation. Full article
(This article belongs to the Section Dairy Animal Health)
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13 pages, 952 KiB  
Review
Unintended Consequences of Obesity Pharmacotherapy: A Nutritional Approach to Ensuring Better Patient Outcomes
by Werd Al-Najim, António Raposo, Mona N. BinMowyna and Carel W. le Roux
Nutrients 2025, 17(11), 1934; https://doi.org/10.3390/nu17111934 - 5 Jun 2025
Viewed by 1776
Abstract
Background/Objectives: Obesity pharmacotherapy vastly improved the treatment of the disease of obesity. However, GLP-1 receptor agonists and GIP/GLP-1 dual agonists may lead to nutritional complications, including severe caloric restriction, micronutrient deficiencies, lean body mass loss, dehydration, and ketosis. We examine these risks and [...] Read more.
Background/Objectives: Obesity pharmacotherapy vastly improved the treatment of the disease of obesity. However, GLP-1 receptor agonists and GIP/GLP-1 dual agonists may lead to nutritional complications, including severe caloric restriction, micronutrient deficiencies, lean body mass loss, dehydration, and ketosis. We examine these risks and outlines dietitian-led strategies to support improved safety and effectiveness. Methods: This narrative review was conducted in three stages: literature search, screening of abstracts and full texts, and synthesis of findings. Searches were carried out in April and May 2025 across PubMed, Embase, Scopus, ScienceDirect, Web of Science, and Google Scholar using keywords related to obesity pharmacotherapy and nutrition. Results: Clinical observations and trial data suggest that some individuals may consume fewer than 800 kcal/day during the initial stages of treatment. Prolonged energy and protein deficits can increase the risk of sarcopenia, metabolic dysfunction, and reduce treatment adherence. Additional risks include inadequate micronutrient intake due to reduced dietary variety, dehydration linked to gastrointestinal symptoms and hypodipsia, and rare but serious cases of ketoacidosis. Patients at heightened risk include older adults, those with low baseline muscle mass, and individuals with restrictive eating patterns. Conclusions: Obesity medications introduce unique nutritional risks that are not yet addressed by standardised clinical protocols. Registered dietitians play a critical role in assessing intake patterns, monitoring for red flags, and delivering targeted nutritional support. Integrating structured dietary assessment tools, checklists, and risk-specific guidance into pharmacotherapy pathways can enhance safety, promote adherence, and improve long-term outcomes. Full article
(This article belongs to the Special Issue Nutritional Perspectives in Obesity Treatments)
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14 pages, 1426 KiB  
Article
Rumination Time, Reticulorumen Temperature, and Activity in Relation to Postpartum Health Status in Dairy Cows During Heat Stress
by Szilvia Szalai, Ákos Bodnár, Hedvig Fébel, Mikolt Bakony and Viktor Jurkovich
Animals 2025, 15(11), 1616; https://doi.org/10.3390/ani15111616 - 30 May 2025
Viewed by 548
Abstract
Effective health management during the transition period depends on early disease detection, which can be achieved through continuous monitoring using precision livestock farming tools. This study assessed reticulorumen temperature, rumination time, and activity in dairy cows during the periparturient period under summer heat [...] Read more.
Effective health management during the transition period depends on early disease detection, which can be achieved through continuous monitoring using precision livestock farming tools. This study assessed reticulorumen temperature, rumination time, and activity in dairy cows during the periparturient period under summer heat stress. We hypothesized differences in these parameters between healthy (HE) cows and those developing postpartum disorders (DI). Forty clinically healthy, multiparous cows were monitored from 5 days prepartum to 14 days after calving (days in milk; DIM). A cow was considered healthy and allocated to the HE group (n = 26) if she was not affected by any postpartum health disorders until the end of the study period. A cow was considered diseased and allocated to the DI group (n = 14) if she had been diagnosed with mastitis, metritis, lameness, or ketosis. Weather loggers recorded barn microclimate data, while rumination, activity, and rumen temperature were tracked using a microphone-based sensor in the neck collar (Ruminact HR) and rumen bolus (Smaxtec). THI values remained above 68 throughout the study, peaking at 80, indicating sustained heat stress. Rumen temperature ranged between 39 and 41 °C and moderately correlated with THI (correlation coefficient was 0.27; 95% CI: 0.20; 0.33; p < 0.0001). Both groups exhibited a nadir in rumen temperature at calving, with no differences. Rumination time declined prepartum, reaching its lowest at 2 DIM in DI cows. It was significantly affected by days around calving, postpartum disorders, and THI. Activity increased prepartum and normalized by 4 DIM in HE cows, while DI cows showed higher activity at 4 DIM, stabilizing by 5–7 DIM. These findings underscore the value of precision monitoring tools for early disease detection and intervention. Full article
(This article belongs to the Special Issue Heat Stress and Livestock: Effects on the Physiology)
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18 pages, 3203 KiB  
Article
Adjunct Therapy with Ipragliflozin Exerts Limited Effects on Kidney Protection in Type 1 Diabetes: A Retrospective Study Conducted at 25 Centers in Japan (IPRA-CKD)
by Yuta Nakamura, Ichiro Horie, Hiroshi Yano, Hiroshi Nomoto, Tomoyasu Fukui, Yoshihiko Yuyama, Tomoyuki Kawamura, Mariko Ueda, Akane Yamamoto, Yushi Hirota, Yoshiki Kusunoki, Kenro Nishida, Dan Sekiguchi, Yasutaka Maeda, Masae Minami, Ayako Nagayama, Shimpei Iwata, Hitomi Minagawa, Shinya Furukawa, Teruki Miyake, Hiroaki Ueno, Rei Chinen, Yoshiro Nakayama, Hiroaki Masuzaki, Yasutaka Miyachi, Yosuke Okada, Mitsuhiro Okamoto, Kaoru Ono, Ken-ichi Tanaka, Akira Kurozumi, Takenori Sakai, Hironori Yamasaki, Jun-ichi Yasui, Ayako Ito, Atsushi Kawakami and Norio Abiruadd Show full author list remove Hide full author list
Biomedicines 2025, 13(6), 1287; https://doi.org/10.3390/biomedicines13061287 - 23 May 2025
Viewed by 1142
Abstract
Background/Objectives: While sodium–glucose cotransporter 2 (SGLT2) inhibitors have demonstrated additional non-glycemic benefits for renal protection in individuals with type 2 diabetes, less evidence is available for those with type 1 diabetes (T1D). To determine whether the adjunctive use of the SGLT2 inhibitor [...] Read more.
Background/Objectives: While sodium–glucose cotransporter 2 (SGLT2) inhibitors have demonstrated additional non-glycemic benefits for renal protection in individuals with type 2 diabetes, less evidence is available for those with type 1 diabetes (T1D). To determine whether the adjunctive use of the SGLT2 inhibitor ipragliflozin confers kidney protection in individuals with T1D, we retrospectively analyzed data from a real-world cohort examined at 25 centers in Japan. Methods: We enrolled 359 subjects aged 20–74 years with T1D (IPRA group: 159 ipragliflozin users; control [CTRL] group: 200 non-users). The primary outcome was changes in the estimated glomerular filtration rate (eGFR) from baseline to 24 months after the initiation of ipragliflozin. The secondary outcomes were all other changes, including the urinary albumin–creatinine ratio (UACR) and urinary protein–creatinine ratio (UPCR). Results: The IPRA group’s eGFR decline slopes were 0.79 mL/min/1.73 m2/year milder than the CTRL group’s after propensity score matching, but this difference was not significant. The subjects complicated by chronic kidney disease (CKD) defined as UACR ≥ 30 mg/g and/or UPCR ≥ 0.5 g/g and/or eGFR < 60 mL/min/1.73 m2 showed changes in UPCR (g/g) from baseline to 24 months that were significantly lower in the IPRA group (−0.27 ± 1.63) versus the CTRL group (0.18 ± 0.36) (p = 0.016). No significant increase in adverse events (including severe hypoglycemia and hospitalization due to ketosis/ketoacidosis or cardiovascular diseases) was observed in the IPRA group. Conclusions: Adjunctive treatment with ipragliflozin exerted potential renal benefits by decreasing proteinuria in T1D subjects with CKD. Further investigations are required to determine whether its additional benefits exceed the increased risk of ketoacidosis. Full article
(This article belongs to the Section Molecular and Translational Medicine)
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20 pages, 2800 KiB  
Article
Exogenous Ketone Supplementation Enhances the Anti-Epileptic Effect of Levetiracetam in Wistar Albino Glaxo/Rijswijk Rats
by Enikő Rauch, Csilla Ari, Dominic P. D’Agostino and Zsolt Kovács
Nutrients 2025, 17(10), 1721; https://doi.org/10.3390/nu17101721 - 20 May 2025
Viewed by 870
Abstract
Background: It has been demonstrated that levetiracetam can decrease absence epileptic activity in both human patients and different types of animal models of absence epilepsy, such as the genetically absence epileptic Wistar Albino Glaxo/Rijswijk (WAG/Rij) rat. It was also suggested previously that exogenous [...] Read more.
Background: It has been demonstrated that levetiracetam can decrease absence epileptic activity in both human patients and different types of animal models of absence epilepsy, such as the genetically absence epileptic Wistar Albino Glaxo/Rijswijk (WAG/Rij) rat. It was also suggested previously that exogenous ketone supplements (EKSs)-evoked ketosis not only decreases the number of spike-wave discharges (SWDs) but also enhances the anti-absence epileptic effect of pyrimidine nucleoside uridine in WAG/Rij rats. These findings suggest that EKSs may enhance the efficacy of clinically used anti-epileptic drugs, such as levetiracetam. Methods: We investigated the effect of not only levetiracetam (intraperitoneal/i.p. 200 mg/kg) alone and KEKS supplemented food (containing 10% ketone ester/KE and 10% ketone salt/KS in a normal rat chow) alone, but also the combination of levetiracetam and KEKS supplemented food on SWD number and SWD time for 5 days in WAG/Rij rats. For evaluation of SWDs, electroencephalographic (EEG) recordings were performed every day. Moreover, for the measurement of blood glucose and R-beta-hydroxybutyrate (R-βHB) levels, the blood was taken from the tail vein of rats after EEG registration. Results: It was demonstrated that the administration of both levetiracetam alone and KEKS food alone decreased the SWD number and time spent in SWD, compared to control. Moreover, after combined administration of levetiracetam with KEKS food, enhanced anti-absence epileptic effect was observed, compared to levetiracetam alone. Blood R-βHB level significantly increased after administration of both KEKS food alone and KEKS food in combination with levetiracetam. Nevertheless, these treatments did not significantly change the blood glucose levels. Conclusions: We can conclude that EKSs may be able to enhance the anti-epileptic effect of different drugs, and this combined treatment method may represent a promising new approach and effective therapy against epileptic seizures, especially in treatment-resistant patients. Full article
(This article belongs to the Section Nutrition and Metabolism)
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40 pages, 1730 KiB  
Review
Integrative Strategies for Preventing and Managing Metabolic Syndrome: The Impact of Exercise and Diet on Oxidative Stress Reduction—A Review
by Ana Onu, Daniela-Marilena Trofin, Andrei Tutu, Ilie Onu, Anca-Irina Galaction, Dragos-Petrica Sardaru, Dan Trofin, Cristiana Amalia Onita, Daniel-Andrei Iordan and Daniela-Viorelia Matei
Life 2025, 15(5), 757; https://doi.org/10.3390/life15050757 - 8 May 2025
Cited by 3 | Viewed by 2400
Abstract
Metabolic syndrome (MetS) is characterized by central obesity, insulin resistance, hypertension, dyslipidemia, and chronic inflammation, significantly increasing the risk of cardiovascular disease and type 2 diabetes. Effective management of MetS is critical, with exercise being a key intervention. This review analyzed the effects [...] Read more.
Metabolic syndrome (MetS) is characterized by central obesity, insulin resistance, hypertension, dyslipidemia, and chronic inflammation, significantly increasing the risk of cardiovascular disease and type 2 diabetes. Effective management of MetS is critical, with exercise being a key intervention. This review analyzed the effects of different exercise intensities—low, moderate, and high-intensity interval training (HIIT)—on metabolic health, oxidative stress (OS), inflammation, and cardiovascular function. A search of Medline, PEDro, and EBSCO identified 2251 articles, with 159 studies published between 1999 and 2025 included after screening. Low-intensity exercise improved insulin sensitivity, reduced OS markers (e.g., MDA, 8-OHdG), and enhanced antioxidant enzyme activity. Moderate-intensity exercise showed similar benefits with notable reductions in inflammatory markers (e.g., IL-1β, TNF-α). HIIT promoted fat loss and improved metabolic markers but temporarily increased OS and inflammation. Dietary strategies also play a critical role. The Mediterranean diet and Dietary Approaches to Stop Hypertension (DASH) diets are well established, emphasizing nutrient-dense foods like unsaturated fats and fiber to reduce inflammation and manage weight. The ketogenic diet (KD), a high-fat, low-carbohydrate approach, has recently gained attention for its metabolic benefits. KD induces ketosis, improving insulin sensitivity, reducing triglycerides, and enhancing fat oxidation. Studies show KD effectively reduces body weight and glucose levels, though long-term adherence and nutrient deficiencies remain challenges. Intermittent fasting also showed potential benefits, though effects on glucose metabolism were inconsistent. This review underscores the need for tailored approaches combining exercise, diet, and fasting to optimize MetS outcomes, offering integrative strategies for prevention and management. Full article
(This article belongs to the Special Issue Diet and Vascular Disease)
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