Search Results (1,230)

Objectives: This study investigated whether CoQ10 supplementation enhances physical adaptations to high-intensity interval training (HIIT) in muscular strength, power, and physical function in older adults. Method: In a double-blind, randomized controlled trial, 38 adults aged 65–75 were assigned to either a CoQ10 (Females: 8; Males: 11) or placebo (Females: 8; Males: 11) group and completed an 8-week supervised HIIT program. Lower- and upper-body strength (30s 5-repetition chair stand [5XSST], chair standing [30CST], handgrip strength [HGR/L]), balance (single-leg stand [SLS], timed up and go [TUG]), mobility (25-foot walk [25FW]), and aerobic endurance (6-minute walk [6MWT]) were assessed pre- and post-intervention. Results: The CoQ10 group demonstrated significantly greater improvements in 5XSST and 30CST compared to the placebo group (p < 0.05). Both groups showed significant within-group improvements in right and left handgrip strength, SLS, 6MWT, and TUG (all p < 0.001), with no significant between-group differences observed for these outcomes (p > 0.05). No adverse events were reported. Conclusion: While CoQ10 supplementation enhanced improvements in lower-body strength and power, as indicated by the greater gains in 5XSST and 30CST performance compared to the placebo, no between-group differences were observed in TUG, grip strength, or other functional outcomes. This suggests that the performance-related effects of CoQ10 may be more specific to muscular power output and fatigue resistance, rather than general mobility or balance-related tasks. These findings highlight the potential of CoQ10 as a targeted adjunct in exercise for supporting lower-body function and physical performance in older adults. Full article

Objectives: This systematic review and meta-analysis investigated whether salivary cortisol and alpha-amylase levels differ between patients with anorexia nervosa (AN) and healthy controls. Methods: A systematic literature search was conducted in PubMed, ScienceDirect, SpringerLink, and Scopus for relevant studies published up to December 2024. Standardized mean differences (SMDs) and 95% confidence intervals (CIs) were calculated using a random-effects model. Statistical heterogeneity was assessed using Cochran’s Q and the I² statistic. Results: Data on salivary alpha-amylase were extracted from six studies including 218 patients with AN and 220 healthy controls. No significant group difference was observed (SMD = −0.48; 95% CI, −1.05 to 0.10; I² = 86%), though sensitivity analysis indicated significantly lower levels in AN (SMD = −1.12; 95% CI, −2.16 to −0.09; I² = 82%). Salivary cortisol was assessed in 24 reports from 17 studies (517 patients with AN, 672 controls), revealing significantly higher levels in AN (SMD = 0.69; 95% CI, 0.54–0.85; I² = 30%). Sensitivity analyses showed stable effect sizes. Meta-regression indicated that neither age nor body mass index significantly moderated the results. Conclusions: Salivary cortisol may serve as a reliable, noninvasive biomarker for AN, with potential utility in early identification and prevention of disease progression. Full article

The Chinese sturgeon (Acipenser sinensis) is a critically endangered species with significant ecological and economic value. This study investigates the effects of Angelica sinensis polysaccharides (ASPs) on the antioxidant and immune responses of juvenile Chinese sturgeon through physiological and molecular approaches. Healthy juvenile Chinese sturgeon (n = 120, mean body weight 356.50 ± 92.87 g) were fed diets supplemented with 0%, 0.5%, 1.0%, and 2.0% ASP for 36 days. Results showed that ASP, particularly at 2.0%, significantly enhanced serum antioxidant capacity by increasing activities of superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GSH-Px) and reduced malondialdehyde (MDA) content. Immune indices, including immunoglobulins (IgG and IgM), complement components (C3 and C4), lysozyme (LSZ) activity, and antimicrobial peptides (AMPs), were also significantly elevated in the 1.0% and 2.0% ASP groups. Transcriptome sequencing of spleen and kidney tissues from the control and 2.0% ASP groups identified 151 and 467 differentially expressed genes (DEGs), respectively, with significant enrichment in immune-related pathways such as phagocytosis and the MAPK signaling pathway. Ten candidate immune-related genes (e.g., PDIA4, H-2Q9α, TTC39B) were validated by qRT-PCR, confirming the reliability of the RNA-seq data. This study demonstrates that ASP can enhance the antioxidant and immune responses of juvenile Chinese sturgeon, providing a potential natural immunostimulant for aquaculture. These findings offer a scientific basis for the conservation and sustainable production of this endangered species and highlight the need for further research on the application of ASP in sturgeon aquaculture. Full article

Vectoring tomato spotted wilt virus (TSWV) by two well-known thrips species, Frankliniella occidentalis Pergande and F. intonsa Trybom (Thysanoptera: Thripidae), is facilitated in different ways. Symbiotic bacteria positively influence thrips fitness, but the interaction between these bacteria and tospovirus inside the thrips’ body remains unknown. Metagenomic profiling of symbionts in nonviruliferous and viruliferous Frankliniella thrips was performed to elucidate the interactions between symbiotic bacteria and the virus. A total of 97 operational taxonomic units (OTUs) were identified by profiling the microbes, where Proteobacteria was the most abundant phylum, with a high richness in Serratia spp. F. occidentalis showed lower variation in bacterial diversity between nonviruliferous and viruliferous treatments than F. intonsa. RT-qPCR validation for Serratia and Escherichia revealed opposite abundance patterns between the two thrips species. In contrast, Enterobacteriaceae and Pantoea showed similar patterns with higher abundance in nonviruliferous conditions. Wolbachia was detected exclusively in F. intonsa, with a higher bacterial titer in the viruliferous sample. Our findings suggest that TSWV association may influence the abundance of different bacterial symbionts within the thrips’ body, potentially via induction of antimicrobial peptides in response to viral invasion, and to our knowledge this is the first report addressing this tripartite interaction. These findings improve our understanding of how virus–symbiont association contributes to thrips vector competence. Full article

Genotypic characteristics may determine the body’s response to stressful conditions as well as its susceptibility to cardiovascular diseases and stroke. Old age worsens the course of these diseases, and often concomitant hypertension can negatively affect brain function, especially in cases of social isolation. In this work, we studied how social isolation and hypertension affect the transcription activity of genes associated with glucocorticoid signaling in the rat brain. The study was performed on 10-month-old rats of the outbred Wistar stock (n = 48) and the inbred spontaneously hypertensive (SHR) strain (n = 28). The animals of each genotype were divided into groups, one of which was kept in home cages in groups of 3–4 individuals, and the other in single cages for 3 months. Physiological parameters and plasma corticosterone were controlled before the start and after 3 months of isolation. Each group was additionally divided into two subgroups: one subjected to 1 h of restraint stress, and changes in blood glucose and corticosterone levels were assessed. At the end, the levels of Nr3c1, Nr3c2, Hsd11b1, and Fkbp5 mRNAs were measured in the hippocampus and frontal cortex using the Q-PCR technique. After isolation, weight gain stopped in SHRs, although blood pressure did not change, and heart rate increased in rats of both genotypes. In response to restraint, there was practically no increase in corticosterone in isolated Wistar rats, whereas in SHRs, there were significant glucose and corticosterone responses. Significant disruptions in the system responsible for corticosterone-activated signaling cascades were found in the brains of SHR rats. The transcriptional activity of genes encoding corticosterone receptors and proteins regulating their action was reduced in the hippocampus and frontal cortex in SHRs compared to Wistar rats. However, neither isolation nor acute stress significantly affected the contents of transcripts studied. Meanwhile, after isolation, the relationships between the expression of these genes changed significantly, in different directions, in rats of the studied genotypes, both within and between brain structures. Thus, the SHR genotype is associated with persistent changes in the brain that affect the expression of glucocorticoid-associated genes. This indicates a more complex regulation of the stress response, not limited only by the feedback system within the hypothalamic–pituitary–adrenocortical or sympatho-adrenomedullary systems, but operated at the level of the limbic system and the cerebral cortex. Full article

Background/Objectives: Intermittent hypobaric hypoxia (IHH) induces various physiological and metabolic adaptations. This study aimed to investigate the effects of a seven-day IHH exposure on nutritional status, body composition, gut microbiota, movement intensity, and energy expenditure in 10 workers. Methods: A pre–post comparative design was employed, with measurements taken at the beginning and end of the exposure period. Nutritional status, body composition, and phase angle (PhA) were assessed via bioelectrical impedance analysis (BIA). Gut microbiota composition was analyzed through fecal DNA extraction and qPCR for specific bacterial families. Movement intensity and energy expenditure were monitored using accelerometry. An initial statistical analysis was performed, which included paired t-tests and Wilcoxon signed-rank tests. Results: A significant increase in PhA (mean difference: 0.40; p = 0.0053 for t-test, p = 0.0136 for Wilcoxon) and a significant decrease in BMI (mean difference: −0.38; p = 0.0311 for t-test, p = 0.0546 for Wilcoxon). Conclusions: While the original paper reported no significant changes in nutritional status or body composition, our re-analysis suggests a significant change in BMI. The original paper also reported significant changes in specific gut bacterial families (butyrate-producing bacteria, p = 0.037; Lactobacillus species, p = 0.006). Physical activity levels remained consistently low. Full article

Background/Objectives: The physiological ventilation–perfusion ratio (V/Q) in the upper pulmonary field is >3 and in the lower pulmonary field it is <1 due to the effect of gravity when the body is in an upright position. Pneumonectomy leads to significant changes in ventilation and perfusion conditions. The aim of this study was to evaluate perfusion and ventilation after pneumonectomy complicated by pleural empyema, including the relationship between surgical outcomes, sex, and time from pneumonectomy. Methods: The study group included 30 patients (25 men, 5 women) who underwent pneumonectomy complicated by pleural empyema. Lung function was assessed using ventilation–perfusion scintigraphy. Twenty-one patients were assessed within 5 years after pneumonectomy and nine patients >5 years after pneumonectomy. Results: Average flow was 21.1% in the upper field, 47.8% in the middle field, and 30.35% in the lower field. The mean perfusion value was significantly higher in the lower field of the right lung than in the lower field of the left lung (33.35 vs. 28.05, p = 0.001). Average ventilation was 17.21% in the upper field, 46.73% in the middle field, and 34.28% in the lower field. The mean V/Q in the upper field was in the range of 0.81–0.87, but it reached approximately 1 (0.96–1) in the middle field and exceeded 1 (1.05–1.25) in the lower field. Conclusions: Pneumonectomy led to increased perfusion in the upper pulmonary field and increased ventilation in the lower pulmonary field compared to the literature for patients with the two lungs (the two-lung system), with a reversal of the V/Q between the upper and lower field. Full article

N-(1,3-Dimethylbutyl)-N’-phenyl-p-phenylenediamine (6PPD) is a member of the p-phenylenediamines (PPDs), recognized as a highly effective antioxidant. It has been extensively employed in the automotive tire manufacturing industry, and plays a critical role in enhancing the durability and service life of rubber materials. In recent years, significant research has demonstrated that 6PPD-quinone (6PPD-Q), the transformation product of 6PPD, is a toxic substance that causes the acute death of coho salmon (Oncorhynchus kisutch). The toxicity of its aquatic organisms has attracted great attention of scholars, and 6PPD-Q has been regarded as the emerging contaminant. It has been reported that 6PPD diffuses from rubber debris into environmental media such as air, soil, and water after the tires wear. 6PPD and 6PPD-Q have been widespread in the environment, and they migrate into food through the environment and enter the human body through exposure routes such as dietary intake and drinking water, posing potential risks to human health. This paper reviewed the current reports on the toxicity and health risks of 6PPD and 6PPD-Q, and compares the advantages and disadvantages of sample pretreatment methods and detection technologies of 6PPD and 6PPD-Q in different food matrices, and provides a scientific basis for food safety risk assessment. Evidence indicated that 6PPD-Q exhibits not only acute aquatic toxicity but also cytotoxicity, hepatotoxicity, neurotoxicity, and genotoxicity. Epidemiological data suggest a significant association between elevated 6PPD-Q levels and increased risks of colorectal cancer and liver abnormalities. There remains an urgent need to develop comprehensive, standardized, and high-throughput analytical methodologies for the efficient screening of 6PPD and 6PPD-Q in food samples, along with expanded dietary exposure assessments, to fully characterize the impacts of 6PPD and 6PPD-Q on human health. Full article

Apis cerana is an important native honey bee species in China, and its body size is closely related to its production performance and environmental adaptability. Prpk (TP53-regulating kinase) has been confirmed to regulate cell growth and proliferation, thereby influencing body size development. However, its function in honey bees remains unclear. In this study, the protein structure and function of PRPK were analyzed, and the expression characteristics were examined at different developmental stages and tissues in Hainan Chinese honey bee and Aba Chinese honey bee. The molecular weight of this protein was 30.3 kDa, and the predicted isoelectric point was 9.13, and it had a conserved PKc_like superfamily domain. The sequence of PRPK was highly conserved from insects to mammals and fungi. The results of RT-qPCR showed that Prpk expression significantly increased during honey bee pupation, and its expression level was significantly higher in the larvae and early-stage pupae of the larger-bodied Aba Chinese honey bee. Additionally, Prpk exhibited the highest expression in the thoraces, suggesting its potential involvement in appendage development. This study indicated that Prpk may play a potential regulatory role in body size development in honey bees, providing a theoretical basis and candidate gene for elucidating the molecular mechanisms of body size formation and genetic improvement in honey bees. Full article

Background: Type 2 diabetes (T2DM) and prediabetes are growing public health problems worldwide. Oxidative stress plays a key role in the pathogenesis and progression of carbohydrate metabolism disorders. Metformin is an antidiabetic drug that significantly affects the oxidative-antioxidant balance. This study aimed to compare serum total antioxidant capacity (TAC) in individuals with T2DM, prediabetes, and healthy controls, and to assess the impact of dietary factors and metformin treatment on antioxidant parameters. Methods: The study involved 49 adults (aged 40–70 years) assigned to three groups: those with T2DM (n = 19), those with prediabetes (n = 12), and healthy controls (n = 18). Serum TAC was assessed using three spectrophotometric assays: DPPH, ABTS, and FRAP. A nutritional assessment was performed based on a three-day dietary recall, analysed using DietetykPro software. Statistical analyses included Kruskal–Wallis tests with post hoc corrections and Spearman correlation. Results: The prediabetes group demonstrated the lowest TAC values across all tests, while individuals with T2DM demonstrated higher levels using the ABTS and FRAP tests, which may reflect group-specific factors such as treatment or metabolic regulation. The differences between groups showed moderate to large effect sizes, including η² = 0.24 for ABTS, η² = 0.14 for DPPH and η² = 0.13 for FRAP, indicating biologically meaningful alterations in antioxidant capacity. Negative correlations were observed between antioxidant activity, as measured by the DPPH test, and body weight (p = 0.0095) and BMI (p = 0.0381), indicating that increased body weight may impair serum antioxidant capacity. After applying the FDR correction, significant correlations were observed between ABTS values and vitamin B5 (p = 0.0004, q = 0.0135), omega-6 (p = 0.0042, q = 0.0220), phosphorus (p = 0.0009, q = 0.0328), calcium (p = 0.0024, q = 0.0176) and zinc (p = 0.0012, q = 0.0138) intake. Other associations with anthropometric and dietary variables were observed as non-significant trends. Conclusions: The prediabetes group exhibited lower TAC, indicating a redox profile that differs from both healthy individuals and those with T2DM. Dietary quality, including adequate intake of selenium, could support antioxidant defence mechanisms, whereas excess body weight and high intake of omega-6 may impair them. The results also suggest that metformin may modulate TAC, supporting adaptive responses to oxidative stress in T2DM. These findings highlight the potential importance of dietary and pharmacological interventions in maintaining oxidative-antioxidant balance in metabolic disorders. Full article

Tomato brown rugose fruit virus (ToBRFV), a highly stable and mechanically transmissible tobamovirus, poses a significant threat to solanaceous crops worldwide, particularly tomato (Solanum lycopersicum). While its transmission via human activities and contaminated materials is well-documented, the role of common phytophagous insects in its epidemiology remains less understood. Henosepilachna vigintioctopunctata, the Hadda beetle, is a common pest of Solanaceae with a host range that overlaps extensively with that of ToBRFV. This study aimed to quantify the beetle’s capacity to act as a mechanical vector and to assess its potential epidemiological impact. Using reverse transcription quantitative PCR (RT-qPCR), we evaluated beetle-mediated transmission efficiency, the persistence of its virus-carrying capacity, and its ability to vector the virus to various solanaceous hosts. Our results demonstrate that H. vigintioctopunctata efficiently acquires and transmits ToBRFV to tomato and other key hosts, including black nightshade (S. nigrum), pepper (Capsicum annuum), and eggplant (Solanum melongena). The virus was retained and remained transmissible by beetles for up to 48 h post-acquisition, providing a significant window for dispersal. Viral particles were most abundant in the digestive tract, consistent with ingestion of infected tissue, and declined rapidly on external body parts, confirming a non-circulative, mechanical transmission mechanism. Furthermore, feeding wounds created by non-viruliferous beetles increased plant susceptibility to subsequent infection from environmental contamination. We conclude that H. vigintioctopunctata acts as a potential mechanical vector that might amplify ToBRFV spread at local and landscape levels. This highlights a synergistic interaction between a native pest and an invasive pathogen, underscoring the necessity of incorporating beetle management into integrated strategies for controlling ToBRFV. Full article

Seed physical dormancy, also known as hard-seededness, is a characteristic commonly found in higher plants, which functions to prevent water and oxygen from passing through the impermeable seed coat. Background: Notably, seed dormancy has emerged as a critical factor in the domestication of leguminous plants. Alfalfa (Medicago sativa L.) is a globally cultivated high-quality legume forage crop, while the seeds from different varieties maintain varying degrees of hard-seededness. However, the molecular mechanisms underlying physical dormancy in alfalfa seeds remain poorly understood. In particular, the regulatory mechanisms at the transcriptomic level remain unclear, which has hindered the breeding process of varieties with low hard-seededness. Methods: In this study, we performed global transcriptome analysis to discover the genes specifically expressed in the alfalfa seed coat and provide insights into alfalfa seeds’ physical dormancy domestication traits. RNA sequencing was performed on various alfalfa tissues, including roots, stems, leaves, flowers, and seed coats. Results: This analysis led to the identification of 4740 seed coat-specific expressed genes, including key genes such as KNOX4 (a class II KNOTTED-like homeobox gene), qHs1 (encoding endo-1,4-β-glucanase), GmHs1-1 (encoding a calcineurin-like metallophosphoesterase), and KCS12 (β-ketoacyl-CoA synthase). In addition, several seed coat-specific transcription factor families were identified, including ERF, B3, and NAC, among others. Furthermore, a comparison of gene expression profiles between seeds with and without physical dormancy revealed 60 upregulated and 197 downregulated genes associated with physical dormancy. Crucially, functional enrichment analysis demonstrated that these genes are predominantly associated with lipid metabolism pathways, particularly those involved in the formation of “monolayer-surrounding lipid storage bodies.” Conclusions: This key finding suggests that the establishment of physical dormancy is closely linked to the biosynthesis and deposition of specialized lipid-based layers in the seed coat, which likely constitute the primary barrier to water penetration. Our study thus provides fundamental insights and a valuable genetic resource for future functional studies aimed at deciphering and manipulating physical dormancy in alfalfa. Full article

Background: The high prevalence of anxiety and depression among young adults constitutes a significant public health concern, with body image identified as a key psychological factor. However, the interplay between subjective metrics (perceived body image) and objective measures (Body Mass Index) remains insufficiently explored within specific populations, such as health sciences students in Eastern Europe. Methods: An observational, cross-sectional study was conducted on a sample of 137 medical and nursing students from a Romanian university. Validated instruments were employed: the Hospital Anxiety and Depression Scale (HADS) and the Eating Disorder Examination Questionnaire (EDE-Q). BMI was calculated from self-reported height and weight. Spearman’s correlation analyses and Mann–Whitney U tests were performed. Results: Subjective body image concerns, particularly those related to shape, weight, and eating, were found to be positively and significantly correlated with symptoms of anxiety and depression (all p < 0.05). In contrast, BMI exhibited no significant correlation with either of the HADS subscales. Although nursing students presented a higher mean BMI, no significant differences were recorded between the student groups with respect to psychological symptoms or body image concerns. Conclusions: Subjective dissatisfaction with body image is a more salient correlate of emotional distress than objective body mass in this cohort. Although the sample size was moderate, the observed associations were robust and statistically significant, underscoring the importance of subjective body image over objective metrics such as BMI in this academic population. These findings underscore the necessity for mental health interventions within university settings to focus on the perceptual and cognitive-affective aspects of body image, rather than exclusively on weight management. Full article

Background/Objectives: Acute promyelocytic leukemia (APL) is a distinct subtype of acute myeloid leukemia characterized by the t(15;17)(q24;q21) translocation, generating the PML::RARA fusion gene that blocks myeloid differentiation and drives leukemogenesis. Despite advances in therapy, early mortality remains a major challenge due to severe coagulopathy. This review aims to summarize recent insights into APL pathophysiology, diagnostic approaches, and management strategies. Methods: We performed a comprehensive review of the literature addressing the molecular mechanisms of APL, its associated coagulopathy, and current diagnostic and therapeutic standards, with a focus on evidence-based recommendations for clinical practice. Results: The hallmark PML: RARA oncoprotein disrupts nuclear body function and retinoic acid signaling, resulting in differentiation arrest and apoptosis resistance. APL-associated coagulopathy arises from overexpression of tissue factor, release of cancer procoagulant, inflammatory cytokines, and annexin II-mediated hyperfibrinolysis. Diagnosis requires integration of cytomorphology, immunophenotyping, coagulation studies, and molecular confirmation. Immediate initiation of all-trans-retinoic acid (ATRA) upon clinical suspicion, combined with aggressive supportive care, is critical to control bleeding risk. Conclusions: APL is now a highly curable leukemia when recognized early and treated with targeted therapy. Rapid diagnosis, prompt ATRA administration, and meticulous hemostatic support are essential to reduce early mortality. Further refinements in minimal residual disease monitoring are expected to improve patient outcomes. Full article

A herd of approximately 300 Spanish meat goats in central Alabama experienced sporadic ocular, respiratory, and reproductive diseases over two years, prompting diagnostic investigation at Auburn University’s JT Vaughan Large Animal Teaching Hospital. Five representative doelings exhibiting ocular lesions were examined. Clinical signs included conjunctivitis, corneal opacity, uveitis, and, in one severe case, systemic illness. Initial treatment with topical and systemic antibiotics provided incomplete resolution, raising suspicion of infectious keratoconjunctivitis of atypical etiology. Comprehensive diagnostic testing was performed, including aerobic and Mycoplasma cultures, Giemsa staining, and molecular assays. Moraxella bovoculi was cultured; however, Giemsa staining revealed Chlamydia elementary bodies, and a FRET-qPCR with DNA sequencing confirmed high Chlamydia pecorum loads (up to 1.1 × 10⁷ copies/swab). Mycoplasma testing was negative. Extended treatment with systemic and topical oxytetracycline led to gradual clinical improvement, with C. pecorum DNA declining over 22,000-fold and becoming undetectable after five weeks. This case represents the first documented report of C. pecorum–associated keratoconjunctivitis in goats in the United States. The findings underscore the diagnostic importance of molecular assays for detecting intracellular pathogens that may be missed by culture. The protracted treatment course highlights the therapeutic challenges posed by chlamydial infections due to their intracellular persistence. Additionally, the concurrent detection of M. bovoculi suggests the potential for mixed infections influencing disease severity. These results emphasize C. pecorum as an emerging pathogen of caprine ocular disease with implications for herd health and management. Full article