Sign in to use this feature.

Years

Between: -

Subjects

remove_circle_outline
remove_circle_outline
remove_circle_outline
remove_circle_outline
remove_circle_outline
remove_circle_outline
remove_circle_outline
remove_circle_outline
remove_circle_outline

Journals

Article Types

Countries / Regions

remove_circle_outline
remove_circle_outline
remove_circle_outline
remove_circle_outline
remove_circle_outline

Search Results (221)

Search Parameters:
Keywords = gut leakiness

Order results
Result details
Results per page
Select all
Export citation of selected articles as:
13 pages, 652 KiB  
Article
Evaluation of Alterations in Nutrient Utilization and Intestinal Health in Response to Heat Stress in Pekin Ducks Based on a Pair-Feeding Experimental Design
by Xiangyi Zeng, Arshad Javid, Gregory S. Fraley, Gang Tian, Keying Zhang, Shiping Bai, Xuemei Ding, Jianping Wang, Yan Liu, Yue Xuan, Shanshan Li and Qiufeng Zeng
Animals 2025, 15(15), 2213; https://doi.org/10.3390/ani15152213 - 28 Jul 2025
Viewed by 237
Abstract
The objective of this study was to investigate alterations in nutrient utilization, standardized ileal digestibility of amino acids (SIDAA), and intestinal health in response to heat stress (HS) in Pekin ducks. A total of 240 healthy 28-day-old male Pekin ducks were randomly allocated [...] Read more.
The objective of this study was to investigate alterations in nutrient utilization, standardized ileal digestibility of amino acids (SIDAA), and intestinal health in response to heat stress (HS) in Pekin ducks. A total of 240 healthy 28-day-old male Pekin ducks were randomly allocated to three groups: a normal control (NC) group, an HS group, and a pair-fed (PF; provided an amount of feed equal to that consumed by the HS group to eliminate the effects of feed intake) group, each with eight replicate cages of ten birds. The results showed that HS significantly reduced the apparent utilization of dietary energy, ether extract, and crude protein compared to both the NC and PF groups (p < 0.05), but yielded comparable SIDAA to the PF group. The HS group exhibited reduced mRNA levels of EAAT3 and PepT1, along with elevated mRNA levels of CAT1, GLUT5, and FATP6 in the jejunum compared to the NC or PF groups, respectively (p < 0.05). Furthermore, HS resulted in a significant deterioration of jejunal morphology and goblet cell count compared to the NC and PF groups (p < 0.05). Serum fluorescein isothiocyanate-dextran levels were significantly higher in HS ducks than in NC ducks (p < 0.05), but did not differ from PF ducks. At order-level classification of ileal mucosal microbiota, HS markedly increased the relative abundance of Bacillales, Deferribacterales, and Actinomycetales versus NC (p < 0.05), while significantly decreasing Bifidobacteriales abundance relative to PF (p < 0.05). Collectively, HS induces a leaky gut and microbiota dysbiosis that compromises gut health, thereby reducing dietary nutrient utilization in Pekin ducks. The observed reduction in feed intake constitutes a primary driver of intestinal health deterioration in heat-stressed Pekin ducks. Full article
(This article belongs to the Section Poultry)
Show Figures

Figure 1

26 pages, 6233 KiB  
Review
Colonic Aging and Colorectal Cancer: An Unignorable Interplay and Its Translational Implications
by Qiyan Yin, Fen Qin, Fangliu Gan, Guangxi Zhao, Ronghua Chen, Yue Wen, Xueyang Hua, Fugui Zeng, Yuezheng Zhang, Yuliang Xiao, Wenbing Xie and Yong Tao
Biology 2025, 14(7), 805; https://doi.org/10.3390/biology14070805 - 3 Jul 2025
Viewed by 540
Abstract
Colorectal cancer (CRC) incidence increases markedly with age, yet chronological age is an inadequate proxy for the complex biological processes involved. Colon aging, the intrinsic biological aging of the colonic tissue, is emerging as a crucial, active driver of CRC development. This review [...] Read more.
Colorectal cancer (CRC) incidence increases markedly with age, yet chronological age is an inadequate proxy for the complex biological processes involved. Colon aging, the intrinsic biological aging of the colonic tissue, is emerging as a crucial, active driver of CRC development. This review comprehensively analyzes the interplay between colon aging and CRC pathogenesis by examining fundamental hallmarks of aging—such as altered tissue homeostasis, epigenetic dysregulation, and microenvironmental shifts including chronic inflammation (inflammaging), gut microbiome dysbiosis, and extracellular matrix remodeling—manifest specifically within the aging colon to synergistically foster a pro-tumorigenic environment. Key findings synthesized from the literature highlight the critical roles of impaired colonic stem cell function, epithelial barrier disruption (“leaky gut”), persistent low-grade inflammation, and altered microbial communities and their metabolites in promoting CRC initiation and progression. Translating this mechanistic understanding holds significant promise: insights from colon aging research can inform novel biomarkers for improved early detection and risk stratification, guide the development of personalized preventative strategies and therapeutic interventions targeting aging pathways, and underpin public health initiatives focused on healthy colon aging. Ultimately, recognizing colon aging as a modifiable contributor to CRC offers a powerful avenue to potentially reduce CRC incidence and enhance patient outcomes, particularly in the vulnerable aging population. Full article
(This article belongs to the Section Cancer Biology)
Show Figures

Figure 1

27 pages, 1448 KiB  
Systematic Review
Leaky Gut Biomarkers as Predictors of Depression and Suicidal Risk: A Systematic Review and Meta-Analysis
by Donato Morena, Matteo Lippi, Matteo Scopetti, Emanuela Turillazzi and Vittorio Fineschi
Diagnostics 2025, 15(13), 1683; https://doi.org/10.3390/diagnostics15131683 - 1 Jul 2025
Viewed by 811
Abstract
Background: The gut–brain axis (GBA) has been demonstrated to be involved in normal neurodevelopment, with its dysfunction potentially contributing to the onset of mental disorders. In this systematic review and meta-analysis, we aimed to examine the relationship between levels of specific biomarkers [...] Read more.
Background: The gut–brain axis (GBA) has been demonstrated to be involved in normal neurodevelopment, with its dysfunction potentially contributing to the onset of mental disorders. In this systematic review and meta-analysis, we aimed to examine the relationship between levels of specific biomarkers of intestinal permeability or inflammation and scores of depressive symptoms or suicidality. Methods: All studies investigating the link between depressive symptoms and/or suicidality and biomarkers associated with intestinal permeability or inflammation were included. Studies providing data for comparisons between two groups—depressive or suicidal patients vs. healthy controls, or suicidal vs. non-suicidal patients—were included in the meta-analysis. Studies examining the correlation between depressive symptoms and biomarker levels were also included into the review. Data were independently extracted and reviewed by multiple observers. A random-effects model was employed for the analysis, and Hedge’s g was pooled for the effect size. Heterogeneity was assessed using the I2 index. Results: Twenty-two studies provided data for inclusion in the meta-analysis, while nineteen studies investigated the correlation between depressive symptoms and biomarker levels. For depressive symptoms, when compared to the controls, patients showed significantly increased levels of intestinal fatty acid-binding protein (I-FABP) (ES = 0.36; 95% CI = 0.11 to 0.61; p = 0.004; I2 = 71.61%), zonulin (ES = 0.69; 95% CI = 0.02 to 1.36; p = 0.044; I2 = 92.12%), antibodies against bacterial endotoxins (ES = 0.75; 95% CI = 0.54 to 0.98; p < 0.001; I2 = 0.00%), and sCD14 (ES = 0.11; 95% CI = 0.01 to 0.21; p = 0.038; I2 = 10.28%). No significant differences were found between the patients and controls in levels of LPS-binding protein (LBP) and alpha-1 antitrypsin (A-1-AT). For suicidality, four studies were identified for quantitative analysis, three of which focused on I-FABP. No significant differences in I-FABP levels were observed between suicidal patients and the controls (ES = 0.24; 95% CI = −0.30 to 0.79; p = 0.378; I2 = 86.44%). Studies investigating the correlation between depressive symptoms and levels of intestinal permeability and inflammation biomarkers did not provide conclusive results. Conclusions: A significant difference was observed between patients with depressive symptoms and controls for biomarkers of intestinal permeability (zonulin, which regulates tight junctions), inflammatory response to bacterial endotoxins (antibodies to endotoxins and sCD14—a soluble form of the CD14 protein that modulates inflammation triggered by lipopolysaccharides), and acute intestinal epithelial damage (I-FABP, released upon enterocyte injury). Studies investigating suicidality and related biomarkers were limited in number and scope, preventing definitive conclusions. Overall, these findings suggest that biomarkers of gut permeability represent a promising area for further investigation in both psychiatric and forensic pathology. They may have practical applications, such as supporting diagnostic and therapeutic decision-making in clinical settings and providing pathologists with additional information to help determine the manner of death in forensic investigations. Full article
Show Figures

Figure 1

19 pages, 835 KiB  
Review
Kidney-Gut Axis in Chronic Kidney Disease: Therapeutic Perspectives from Microbiota Modulation and Nutrition
by Shu Wakino, Kazuhiro Hasegawa, Masanori Tamaki, Masanori Minato and Taizo Inagaki
Nutrients 2025, 17(12), 1961; https://doi.org/10.3390/nu17121961 - 9 Jun 2025
Viewed by 1174
Abstract
Chronic kidney disease (CKD) has a high prevalence worldwide, with an increasing incidence. One of the mechanisms of CKD progression involves a disordered inter-organ relationship between the kidneys and the intestine, known as the kidney-gut axis. In CKD, two pathological gut conditions—disturbed gut [...] Read more.
Chronic kidney disease (CKD) has a high prevalence worldwide, with an increasing incidence. One of the mechanisms of CKD progression involves a disordered inter-organ relationship between the kidneys and the intestine, known as the kidney-gut axis. In CKD, two pathological gut conditions—disturbed gut microbiota composition called uremic dysbiosis and leaky gut—contribute to the progression of CKD. Dysbiosis is associated with the increased production of gut-derived uremic toxins, leaky gut, and chronic systemic inflammation, leading to worsening uremia, which in turn aggravates the gut condition. This vicious cycle should be a target of the therapeutic strategy against CKD. The modulation of uremic dysbiosis, including prebiotics, probiotics, and synbiotics, has been a typical treatment approach, although clinical evidence for their efficacy has been insufficient. Some non-antibiotic drugs have an impact on human gut bacteria that are believed to play a role in their clinical efficacy on kidney function. Nutrition therapies, including a low-protein diet, dietary fiber, a Mediterranean diet, and whole grains, positively influence gut microbiota composition and have been linked to a decreased risk of CKD. Novel strategies are currently being explored, involving the use of postbiotics, microbiome sequencing techniques, and fecal microbiota transplantation, although clinical application remains to be tested. Human trials investigating the above-mentioned interventions remain inconclusive due to several limitations, including dietary variability and genetic factors. Future research should focus on the development of more effective probiotics, prebiotics, and microbial metabolism-modifying drugs, not only for CKD but for other systemic diseases as well. Full article
Show Figures

Figure 1

14 pages, 989 KiB  
Review
Effect of Sodium Butyrate Supplementation on Type 2 Diabetes—Literature Review
by Wiktoria Krauze, Nikola Busz, Weronika Pikuła, Martyna Maternowska, Piotr Prowans and Dominika Maciejewska-Markiewicz
Nutrients 2025, 17(11), 1753; https://doi.org/10.3390/nu17111753 - 22 May 2025
Viewed by 1775
Abstract
Background: Type 2 diabetes mellitus (T2DM) represents a major global health burden, with prevalence rates escalating due to rapid urbanization, economic growth, and the obesity epidemic. Despite intensive research, the underlying molecular mechanisms remain incompletely understood, with emerging evidence suggesting multifactorial origins involving [...] Read more.
Background: Type 2 diabetes mellitus (T2DM) represents a major global health burden, with prevalence rates escalating due to rapid urbanization, economic growth, and the obesity epidemic. Despite intensive research, the underlying molecular mechanisms remain incompletely understood, with emerging evidence suggesting multifactorial origins involving genetic, epigenetic, lifestyle, and environmental factors. Methods: This review synthesizes current epidemiological data on T2DM prevalence, risk factors, and demographic patterns from 1990 to 2017, and discusses projected trends through 2030. We examine the role of intestinal barrier dysfunction and gut microbiota dysbiosis in T2DM pathogenesis, highlighting key mechanistic insights. Furthermore, we analyze recent findings on the role of butyrate, a major short-chain fatty acid, in preserving gut integrity and its potential therapeutic effects on metabolic health. Results: Global T2DM prevalence has risen markedly across all age groups, with particularly high rates in Western Europe and Pacific Island nations. Disruption of the intestinal barrier (“leaky gut”) and gut microbiota alterations contribute significantly to systemic inflammation and insulin resistance, which are pivotal features in T2DM development. Butyrate plays a central role in maintaining epithelial barrier function, modulating immune responses, and regulating glucose metabolism. Preclinical studies have demonstrated that sodium butyrate supplementation improves gut integrity, reduces systemic endotoxemia, and ameliorates metabolic parameters. Emerging clinical evidence suggests benefits of sodium butyrate, particularly when combined with prebiotic fibers, in improving glycemic control and reducing inflammatory markers in T2DM patients. Conclusions: Gut barrier integrity and microbiota composition are critical factors in T2DM pathogenesis. Sodium butyrate shows promise as a complementary therapeutic agent in T2DM management, although further large-scale, long-term clinical trials are required to confirm its efficacy and safety. Targeting gut health may represent a novel strategy for the prevention and treatment of T2DM. Full article
(This article belongs to the Special Issue Diabetes Mellitus and Nutritional Supplements)
Show Figures

Figure 1

14 pages, 1678 KiB  
Article
Evaluation of Defensins as Markers of Gut Microbiota Disturbances in Children with Obesity and Metabolic Dysfunction-Associated Steatotic Liver Disease (MASLD)
by Aldona Wierzbicka-Rucińska, Ewa Konopka, Sebastian Więckowski, Wojciech Jańczyk, Anna Świąder-Leśniak, Jolanta Świderska, Joanna Trojanek, Zbigniew Kułaga, Piotr Socha and Joanna Bierła
J. Clin. Med. 2025, 14(10), 3505; https://doi.org/10.3390/jcm14103505 - 16 May 2025
Cited by 1 | Viewed by 576
Abstract
Until recently, it was believed that bacterial translocation occurs as a result of leaky gut syndrome or sepsis. To confirm or exclude the process of bacterial translocation, biomarkers can be used. One such biomarker is defensins, which indicate immune activity, as defensins are [...] Read more.
Until recently, it was believed that bacterial translocation occurs as a result of leaky gut syndrome or sepsis. To confirm or exclude the process of bacterial translocation, biomarkers can be used. One such biomarker is defensins, which indicate immune activity, as defensins are cationic peptides with antibacterial properties produced by intestinal epithelial cells. Also, fatty acid-binding proteins (I-FABP and L-FABP) can serve as useful serological markers for intestinal epithelial damage, indicating impaired intestinal permeability or organ damage, as high concentrations of them are found in tissues and low concentrations in blood serum. In the context of obesity, the integrity of the intestinal barrier, which can be disrupted by dietary fat, leads to increased intestinal permeability. Since bacterial translocation and microbiota contribute to obesity and Metabolic Dysfunction-Associated Steatotic Liver Disease (MASLD) associated with metabolic dysfunction, intestinal barrier markers can be used to study the role of the gut–liver axis. The aim of this study was to gain insight into the pathogenesis of MASLD and examine the impact of bacterial translocation markers and intestinal and hepatic fatty acid-binding proteins (I-FABP and L-FABP) in children with MASLD. Method: We examined 60 children with MASLD and overweight/obesity (MASLD was diagnosed based on increased liver echogenicity in ultrasound and elevated ALT activity), aged 14.5 years (range 8.5 to 15.8); 33 children with overweight/obesity without MASLD, aged 13.0 years (range 11.4 to 15.8); and 16 healthy controls aged 11.0 years (range 7.0 to 16.2). Defensin, I-FABP, and L-FABP levels were measured using commercial kits: ELISA kits (Drg Medtek) were used to assess α-5 and α-6 defensin concentrations (HBD5, HBD6). I-FABP and L-FABP concentrations were measured using commercial ELISA kits (Hycult Biotech Inc., Wayne, PA, USA). ANOVA analysis was used to compare results across the three study groups. Results: A significant difference was found for the following tests among children with MASLD, obesity, and healthy controls: defensin 6 (14.4 ng/mL vs. 6.13 ng/mL vs. 17.2 ng/mL, respectively), L-FABP (9168 pg/mL vs. 7954 pg/mL vs. 7620 pg/mL, respectively), and I-FABP (272 pg/mL vs. 321 pg/mL vs. 330 pg/mL, respectively). No differences were found in defensin 5 levels (median 567.2 pg/mL vs. 485.7 pg/mL vs. 601.8 pg/mL). No differences were observed in cholesterol levels (HDL, LDL) or triglyceride concentrations, as well as apolipoprotein levels. Conclusions: Based on our study, it was concluded that inflammation and intestinal barrier damage lead to increased L-FABP levels, as it is released from enterocytes in response to oxidative stress or tissue damage. Defensin 6 may indirectly affect L-FABP through microbiota regulation and protection of the intestinal barrier. Defensin 6 also exerts antimicrobial activity and may accompany liver inflammation, with its increased concentration in comparison to obesity explained by the activation of defense mechanisms. Full article
Show Figures

Figure 1

22 pages, 5762 KiB  
Article
Dietary Supplementation of Edible Mushroom Phallus atrovolvatus Aqueous Extract Attenuates Brain Changes in the AppNL−G−F Mouse Model of Alzheimer’s Disease
by Raweephorn Kaewsaen, Wasaporn Preteseille Chanput, Lalida Rojanathammanee, Svetlana A. Golovko, Drew R. Seeger, Mikhail Y. Golovko, Suba Nookala and Colin K. Combs
Nutrients 2025, 17(10), 1677; https://doi.org/10.3390/nu17101677 - 15 May 2025
Viewed by 729
Abstract
Background/Objectives: Alzheimer’s disease (AD) is a neurodegenerative disease characterized by progressive dementia and brain accumulation of Aβ-peptide-containing plaques, gliosis, neuroimmune changes, and neurofibrillary tangles. Mushroom polysaccharides have been previously reported to have anti-neuroinflammation activity through the gut–brain axis. This study aimed to evaluate [...] Read more.
Background/Objectives: Alzheimer’s disease (AD) is a neurodegenerative disease characterized by progressive dementia and brain accumulation of Aβ-peptide-containing plaques, gliosis, neuroimmune changes, and neurofibrillary tangles. Mushroom polysaccharides have been previously reported to have anti-neuroinflammation activity through the gut–brain axis. This study aimed to evaluate whether a dietary intervention with Phallus atrovolvatus, a recently identified edible mushroom in Thailand, could have a benefit on gut health and alleviate AD-related changes. Methods: Male and female 6–8-month-old littermate wild-type control (C57BL/6J) and AppNL−G−F mice were randomly assigned to either a control diet or a diet supplemented with mushroom aqueous extract (MAE) for 8 weeks to quantify changes in body weight, intestine, immune cells, short chain fatty acids, brain cytokines, amyloid-β (Aβ) levels, gliosis, and memory. Results: MAE had no adverse effects on gut leakiness and increased pyruvate levels in serum. Splenocyte immune profiling revealed a significant increase in the frequency of IgM+, IA_IE+, and CD14+ cells in MAE-administered AppNL−G−Ffemale mice compared to their vehicle controls. AppNL−G−Fmale mice that received MAE showed a significant increase in the frequency of cytotoxic CD8 T cells within the cervical lymph nodes compared to their wild-type counterparts. Aβ deposition and gliosis were significantly reduced in the hippocampi of the MAE-supplemented AppNL−G−F groups. However, MAE feeding did not alter spatial recognition memory in either sex or genotype compared to their vehicle groups. Conclusions: Our findings demonstrated that the administration of P. atrovolvatus aqueous extract showed neuroprotective potential against AD-related changes in the brain with no adverse impact on gut health and memory. Full article
(This article belongs to the Section Nutrition and Neuro Sciences)
Show Figures

Figure 1

19 pages, 7295 KiB  
Article
HGF Aggravated Periodontitis-Associated Gut Barrier and Microbial Dysfunction: Implications for Oral–Gut Axis Regulation
by Zhen Chen, Yang Zhong, Lu Chen, Weijia Liu, Chuyin Lin, Yannan Chen and Xinhong Wang
Biology 2025, 14(5), 496; https://doi.org/10.3390/biology14050496 - 2 May 2025
Cited by 11 | Viewed by 1173
Abstract
While periodontitis is increasingly linked to systemic disorders through the oral–gut axis, the molecular mediators driving gut microbiota dysbiosis and barrier disruption remain elusive. Hepatocyte growth factor (HGF), a novel regulator of inflammatory bone loss in periodontitis, may serve as a critical communicator [...] Read more.
While periodontitis is increasingly linked to systemic disorders through the oral–gut axis, the molecular mediators driving gut microbiota dysbiosis and barrier disruption remain elusive. Hepatocyte growth factor (HGF), a novel regulator of inflammatory bone loss in periodontitis, may serve as a critical communicator between oral infection and distal intestinal pathology. This study investigates how HGF overexpression modulates the gut microbial ecosystem and intestinal barrier integrity in a transgenic periodontitis model. In this study, we combined 16S rRNA sequencing of fecal microbiota with comprehensive gut barrier assessments, including systemic markers (D-lactate, LPS, and DAO ELISA), structural integrity (villous morphology), and molecular analysis (ZO-1, occludin, and NOD2 immunohistochemistry), using HGF-overexpressing transgenic (HGF-Tg) mice with periodontitis. The results demonstrated that HGF increased gut permeability in the context of periodontitis, as evidenced by elevated serum levels of D-lactate and LPS compared to wild type (WT) mice. In addition, gut villous morphology disorder was observed in HGF-Tg mice with periodontitis. HGF also diminished the protein level of occludin and upregulated NOD2 expression in mice with periodontitis. Moreover, HGF-Tg mice with periodontitis exhibited significant dysbiosis of gut microbiota, with reduced levels of probiotics (e.g., Faecalibaculum). Notably, HGF also increased the enrichment of the periodontitis-associated pathogens (e.g., Desulfovibrio and Streptococcus) in the gut. Microbial functions, particularly metabolic pathways, were significantly altered by HGF when periodontitis occurred. Some microorganisms like g_Desulfovibrio may play a role in gut barrier disorder in HGF-Tg mice with periodontitis. Overall, our findings position HGF as a novel orchestrator of oral–gut crosstalk, where its overexpression reshapes gut microbial ecology toward a “leaky gut” phenotype to compromise intestinal barrier integrity, further deepening our understanding of the oral–gut axis. Full article
(This article belongs to the Section Microbiology)
Show Figures

Figure 1

21 pages, 2580 KiB  
Article
The New Phytocomplex AL0042 Extracted from Red Orange By-Products Inhibits the Minimal Hepatic Encephalopathy in Mice Induced by Thioacetamide
by Loredana Vesci, Giulia Martinelli, Yongqiang Liu, Luca Tagliavento, Mario Dell’Agli, Yunfei Wu, Sara Soldi, Valeria Sagheddu, Stefano Piazza, Enrico Sangiovanni and Francesco Meneguzzo
Biomedicines 2025, 13(3), 686; https://doi.org/10.3390/biomedicines13030686 - 11 Mar 2025
Cited by 3 | Viewed by 1213
Abstract
Background/Objectives: Minimal hepatic encephalopathy (MHE) is a clinical condition characterized by neurological impairments, including brain inflammation, arising from the accumulation of toxic metabolites associated with liver dysfunction and leaky gut. This study investigated the pharmacological activity of a new phytocomplex extracted from [...] Read more.
Background/Objectives: Minimal hepatic encephalopathy (MHE) is a clinical condition characterized by neurological impairments, including brain inflammation, arising from the accumulation of toxic metabolites associated with liver dysfunction and leaky gut. This study investigated the pharmacological activity of a new phytocomplex extracted from red orange by-products (AL0042) using hydrodynamic cavitation and consisting of a mixture of pectin, polyphenols, and essential oils. Methods: Preliminary in vitro studies evaluated the impact on the epithelial integrity (TEER) of enterocytes challenged by a pro-inflammatory cocktail. The effect of AL0042 was then evaluated in a model of thioacetamide (TAA)-treated mice that mimics MHE. A group of 8–10-week-old male C57BL/6 mice was intraperitoneally injected with TAA to establish the MHE model. The intervention group received TAA along with AL0042 (20 mg/kg, administered orally once daily for 7 days). At the end of the treatment, the rotarod test was conducted to evaluate motor ability, along with the evaluation of blood biochemical, liver, and brain parameters. Results: In vitro, AL0042 (250 μg/mL) partially recovered the TEER values, although anti-inflammatory mechanisms played a negligible role. In vivo, compared with the control group, the test group showed significant behavioral differences, together with alterations in plasma ammonia, serum TNF-α, ALT, AST, corticosterone levels, and SOD activity. Moreover, histological data confirmed the anti-inflammatory effect at liver and brain level. Conclusions: AL0042 treatment revealed a significant therapeutic effect on the TAA-induced MHE mouse model, curbing oxidative stress and peripheral and central inflammation, thus suggesting that its pharmacological activity deserves to be further investigated in clinical studies. Full article
(This article belongs to the Section Neurobiology and Clinical Neuroscience)
Show Figures

Figure 1

16 pages, 3219 KiB  
Article
Caco2/HT-29 In Vitro Cell Co-Culture: Barrier Integrity, Permeability, and Tight Junctions’ Composition During Progressive Passages of Parental Cells
by Elena Donetti, Paola Bendinelli, Margherita Correnti, Elena Gammella, Stefania Recalcati and Anita Ferraretto
Biology 2025, 14(3), 267; https://doi.org/10.3390/biology14030267 - 6 Mar 2025
Cited by 1 | Viewed by 1671
Abstract
Epithelial linings are crucial for the maintenance of physiological barriers. The intestinal epithelial barrier (IEB) consists of enterocytes through tight junctions and mucus-secreting cells and can undergo physiological modifications throughout life. To reproduce as closely as possible the IEB main features over time, [...] Read more.
Epithelial linings are crucial for the maintenance of physiological barriers. The intestinal epithelial barrier (IEB) consists of enterocytes through tight junctions and mucus-secreting cells and can undergo physiological modifications throughout life. To reproduce as closely as possible the IEB main features over time, in vitro co-cultures of Caco2/HT-29 70/30 formed by parental Caco2 and HT-29 cells sub-cultivated for more than 40 passages were set up. The measurements of the transepithelial electrical resistance (TEER) identified two populations: physiological TEER co-cultures (PC) with values > 50 Ωcm2 formed by parental cells with fewer than 40 passages, and leaky TEER co-cultures (LC) with values < 50 Ωcm2 formed by parental cells with more than 40 passages. In LC, paracellular permeability increased in parallel. By immunofluorescence and Western blot analysis, an increase in claudin 2 was observed in LC vs. PC, with no differences in occludin expression. MUC-2 immunoreactivity was stronger in PC than in LC. LC also showed an enhanced vulnerability to TNFα+IFN-γ. These results reproduce the main morpho-functional modifications reported in the human leaky/aged gut and support the usefulness of our in vitro cell model for studying the molecular processes underlying these modifications and testing drug/nutraceutical treatments to ameliorate leaky gut aging. Full article
Show Figures

Figure 1

27 pages, 3950 KiB  
Review
The Complex Role of Gut Microbiota in Systemic Lupus Erythematosus and Lupus Nephritis: From Pathogenetic Factor to Therapeutic Target
by Emanuele Parodi, Marialuisa Novi, Paolo Bottino, Edoardo La Porta, Guido Merlotti, Luigi Mario Castello, Franca Gotta, Andrea Rocchetti and Marco Quaglia
Microorganisms 2025, 13(2), 445; https://doi.org/10.3390/microorganisms13020445 - 18 Feb 2025
Cited by 2 | Viewed by 2514
Abstract
The role of gut microbiota (GM) and intestinal dysbiosis in triggering the onset and/or modulating the severity and progression of lupus nephritis (LN) has been the object of intense research over the last few years. Some alterations at the phyla level, such as [...] Read more.
The role of gut microbiota (GM) and intestinal dysbiosis in triggering the onset and/or modulating the severity and progression of lupus nephritis (LN) has been the object of intense research over the last few years. Some alterations at the phyla level, such as the abundance of Proteobacteria and reduction in Firmicutes/Bacteroidetes (F/B) ratio and in α-diversity have been consistently reported in systemic lupus erythematosus (SLE), whereas a more specific role has been ascribed to some species (Bacteroides thetaiotaomicron and Ruminococcus gnavus) in LN. Underlying mechanisms include microbial translocation through a “leaky gut” and subsequent molecular mimicry, immune dysregulation (alteration of IFNγ levels and of balance between Treg and Th17 subsets), and epigenetic interactions. Levels of bacterial metabolites, such as butyrate and other short-chain fatty acids (SCFAs), appear to play a key role in modulating LN. Beyond bacterial components of GM, virome and mycobiome are also increasingly recognized as important players in the modulation of an immune response. On the other hand, microbiota-based therapy appears promising and includes diet, prebiotics, probiotics, symbiotics, and fecal microbiota transplantation (FMT). The modulation of microbiota could correct critical alterations, such as F/B ratio and Treg/Th17 imbalance, and blunt production of autoantibodies and renal damage. Despite current limits, GM is emerging as a powerful environmental factor that could be harnessed to interfere with key mechanisms leading to SLE, preventing flares and organ damage, including LN. The aim of this review is to provide a state-of-the-art analysis of the role of GM in triggering and modulating SLE and LN on the one hand, while exploring possible therapeutic manipulation of GM to control the disease on the other hand. Full article
(This article belongs to the Special Issue Gut Microbiota in DiseaseThird Edition)
Show Figures

Figure 1

13 pages, 2585 KiB  
Article
Effects of Aneurysmal Subarachnoid Hemorrhage in Patients Without In-Hospital Infection on FABP-I, LBP, and sCD-14
by Brigitta Orban, Diana Simon, Szabina Erdo-Bonyar, Timea Berki, Tihamer Molnar, Laszlo Zavori, Attila Schwarcz, Zoltan Peterfi and Peter Csecsei
Int. J. Mol. Sci. 2025, 26(2), 485; https://doi.org/10.3390/ijms26020485 - 8 Jan 2025
Viewed by 1020
Abstract
Aneurysmal subarachnoid hemorrhage (aSAH) is a serious condition complicated by delayed cerebral ischemia (DCI), where inflammation plays a key role. Although altered gut permeability is noted in other conditions, its significance in aSAH remains unclear. Fatty acid-binding protein (FABP-I), lipopolysaccharide-binding protein (LBP), and [...] Read more.
Aneurysmal subarachnoid hemorrhage (aSAH) is a serious condition complicated by delayed cerebral ischemia (DCI), where inflammation plays a key role. Although altered gut permeability is noted in other conditions, its significance in aSAH remains unclear. Fatty acid-binding protein (FABP-I), lipopolysaccharide-binding protein (LBP), and soluble CD-14 (sCD-14) are established markers of barrier dysfunction. This study investigates gut permeability marker changes in early and late aSAH phases. The study included 177 aSAH patients and 100 controls. Serum samples were collected on days 1 (D1) and 9 (D9) after ictus. FABP-I, LBP, and sCD-14 levels were measured via ELISA, and clinical data were recorded. Outcomes were assessed using the 90-day modified Rankin scale (mRS 0–3 = favorable outcome). Serum FABP-I was significantly lower in aSAH patients (p < 0.05), while LBP and sCD-14 were higher (p < 0.001) compared to controls. FABP-I did not differ between outcome groups, but LBP and sCD-14 were significantly elevated in unfavorable outcomes (p < 0.001). These markers differed in patients without in-hospital infection, with higher levels noted in DCI patients during the later phase (p < 0.05). In aSAH patients without infection, differences in LBP and sCD-14 levels between outcome groups suggest potential endotoxin release from microbial systems, contributing to neuroinflammation and influencing outcomes. Full article
(This article belongs to the Special Issue Interplay Between the Human Microbiome and Diseases)
Show Figures

Figure 1

23 pages, 1946 KiB  
Review
Gut Microbiota, Bacterial Translocation, and Stroke: Current Knowledge and Future Directions
by Cristina Granados-Martinez, Nuria Alfageme-Lopez, Manuel Navarro-Oviedo, Carmen Nieto-Vaquero, Maria Isabel Cuartero, Blanca Diaz-Benito, Maria Angeles Moro, Ignacio Lizasoain, Macarena Hernandez-Jimenez and Jesus Miguel Pradillo
Biomedicines 2024, 12(12), 2781; https://doi.org/10.3390/biomedicines12122781 - 6 Dec 2024
Cited by 4 | Viewed by 2098
Abstract
Stroke is one of the most devastating pathologies in terms of mortality, cause of dementia, major adult disability, and socioeconomic burden worldwide. Despite its severity, treatment options remain limited, with no pharmacological therapies available for hemorrhagic stroke (HS) and only fibrinolytic therapy or [...] Read more.
Stroke is one of the most devastating pathologies in terms of mortality, cause of dementia, major adult disability, and socioeconomic burden worldwide. Despite its severity, treatment options remain limited, with no pharmacological therapies available for hemorrhagic stroke (HS) and only fibrinolytic therapy or mechanical thrombectomy for ischemic stroke (IS). In the pathophysiology of stroke, after the acute phase, many patients develop systemic immunosuppression, which, combined with neurological dysfunction and hospital management, leads to the onset of stroke-associated infections (SAIs). These infections worsen prognosis and increase mortality. Recent evidence, particularly from experimental studies, has highlighted alterations in the microbiota–gut–brain axis (MGBA) following stroke, which ultimately disrupts the gut flora and increases intestinal permeability. These changes can result in bacterial translocation (BT) from the gut to sterile organs, further contributing to the development of SAIs. Given the novelty and significance of these processes, especially the role of BT in the development of SAIs, this review summarizes the latest advances in understanding these phenomena and discusses potential therapeutic strategies to mitigate them, ultimately reducing post-stroke complications and improving treatment outcomes. Full article
Show Figures

Figure 1

26 pages, 2977 KiB  
Article
Therapeutic Efficacy of the Inositol D-Pinitol as a Multi-Faceted Disease Modifier in the 5×FAD Humanized Mouse Model of Alzheimer’s Amyloidosis
by Dina Medina-Vera, Antonio J. López-Gambero, Julia Verheul-Campos, Juan A. Navarro, Laura Morelli, Pablo Galeano, Juan Suárez, Carlos Sanjuan, Beatriz Pacheco-Sánchez, Patricia Rivera, Francisco J. Pavon-Morón, Cristina Rosell-Valle and Fernando Rodríguez de Fonseca
Nutrients 2024, 16(23), 4186; https://doi.org/10.3390/nu16234186 - 4 Dec 2024
Cited by 1 | Viewed by 2243
Abstract
Background/Objectives: Alzheimer’s disease (AD), a leading cause of dementia, lacks effective long-term treatments. Current therapies offer temporary relief or fail to halt its progression and are often inaccessible due to cost. AD involves multiple pathological processes, including amyloid beta (Aβ) deposition, insulin resistance, [...] Read more.
Background/Objectives: Alzheimer’s disease (AD), a leading cause of dementia, lacks effective long-term treatments. Current therapies offer temporary relief or fail to halt its progression and are often inaccessible due to cost. AD involves multiple pathological processes, including amyloid beta (Aβ) deposition, insulin resistance, tau protein hyperphosphorylation, and systemic inflammation accelerated by gut microbiota dysbiosis originating from a leaky gut. Given this context, exploring alternative therapeutic interventions capable of addressing the multifaceted components of AD etiology is essential. Methods: This study suggests D-Pinitol (DPIN) as a potential treatment modifier for AD. DPIN, derived from carob pods, demonstrates insulin-sensitizing, tau hyperphosphorylation inhibition, and antioxidant properties. To test this hypothesis, we studied whether chronic oral administration of DPIN (200 mg/kg/day) could reverse the AD-like disease progression in the 5×FAD mice. Results: Results showed that treatment of 5×FAD mice with DPIN improved cognition, reduced hippocampal Aβ and hyperphosphorylated tau levels, increased insulin-degrading enzyme (IDE) expression, enhanced pro-cognitive hormone circulation (such as ghrelin and leptin), and normalized the PI3K/Akt insulin pathway. This enhancement may be mediated through the modulation of cyclin-dependent kinase 5 (CDK5). DPIN also protected the gut barrier and microbiota, reducing the pro-inflammatory impact of the leaky gut observed in 5×FAD mice. DPIN reduced bacterial lipopolysaccharide (LPS) and LPS-associated inflammation, as well as restored intestinal proteins such as Claudin-3. This effect was associated with a modulation of gut microbiota towards a more balanced bacterial composition. Conclusions: These findings underscore DPIN’s promise in mitigating cognitive decline in the early AD stages, positioning it as a potential disease modifier. Full article
(This article belongs to the Section Lipids)
Show Figures

Graphical abstract

14 pages, 935 KiB  
Brief Report
The Interplay Between Depression, Probiotics, Diet, Immunometabolic Health, the Gut, and the Liver—A Secondary Analysis of the Pro-Demet Randomized Clinical Trial
by Oliwia Gawlik-Kotelnicka, Jakub Rogalski, Karolina H. Czarnecka-Chrebelska, Jacek Burzyński, Paulina Jakubowska, Anna Skowrońska and Dominik Strzelecki
Nutrients 2024, 16(23), 4024; https://doi.org/10.3390/nu16234024 - 24 Nov 2024
Cited by 1 | Viewed by 2528
Abstract
(1) Background: Depression, metabolic alternations, and liver diseases are highly comorbid. Studies have shown that probiotics might be helpful in the treatment of the above-mentioned states. The aim of this secondary analysis was to search for possible predictors of probiotics’ efficacy on liver-related [...] Read more.
(1) Background: Depression, metabolic alternations, and liver diseases are highly comorbid. Studies have shown that probiotics might be helpful in the treatment of the above-mentioned states. The aim of this secondary analysis was to search for possible predictors of probiotics’ efficacy on liver-related outcome measures. (2) Methods: Data from 92 subjects from a randomized clinical trial on the effect of probiotics on depression were analyzed. The shift in liver steatosis and fibrosis indices was assessed in the context of baseline immunometabolic, psychometric, dietary, and intestinal permeability factors. Correlation analysis and linear regression models were used. (3) Results: A total of 30% of the variance of the improvement in the score of the aspartate transferase to platelet ratio index was explained by probiotic use, higher pre-intervention triglycerides, cholesterol, C-reactive protein levels, increased cereal intake, and a lower consumption of sweets. Then, the model of the change in alanine transferase indicated that probiotics were efficient when used by subjects with higher basal levels of intestinal permeability markers. (4) Conclusions: Probiotics being used along with a healthy diet may provide additional benefits, such as decreased cardiovascular risk, for patients with measures consistent with the immunometabolic form of depression. Probiotic augmentation may be useful for liver protection among subjects with a suspected “leaky gut” syndrome. ClinicalTrials.gov: NCT04756544. Full article
(This article belongs to the Special Issue Metabolic Features and Nutritional Interventions in Chronic Diseases)
Show Figures

Figure 1

Back to TopTop