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13 pages, 959 KB  
Article
Transforaminal Endoscopic Lumbar Foraminotomy for Radiculopathy at the Fused Segment After Lumbar Fusion: Clinical Outcomes and Surgical Considerations
by Yong Ahn, Han-Byeol Park, Sung-Ho Do and Sojung Lee
J. Clin. Med. 2026, 15(12), 4789; https://doi.org/10.3390/jcm15124789 (registering DOI) - 20 Jun 2026
Abstract
Background: Radiculopathy originating from a previously fused lumbar segment is a clinically relevant but often underrecognized problem. Progressive foraminal stenosis may develop due to postoperative structural changes, leading to mechanical irritation of the exiting nerve root. Transforaminal endoscopic lumbar foraminotomy (TELF) is a [...] Read more.
Background: Radiculopathy originating from a previously fused lumbar segment is a clinically relevant but often underrecognized problem. Progressive foraminal stenosis may develop due to postoperative structural changes, leading to mechanical irritation of the exiting nerve root. Transforaminal endoscopic lumbar foraminotomy (TELF) is a minimally invasive option, but its role in this setting is not well defined. Methods: In this retrospective cohort study, we included 36 consecutive patients who underwent TELF for symptomatic foraminal stenosis at a previously fused segment between 2020 and 2023. Clinical outcomes were assessed using the visual analog scale (VAS) for leg pain, Oswestry Disability Index (ODI), and modified MacNab criteria, with follow-up of up to 2 years. Radiographic and intraoperative findings were reviewed to explore the underlying mechanisms. Results: The mean VAS score improved significantly from 8.36 preoperatively to 2.00 at 2 years, and the mean ODI decreased from 70.9% to 16.8%. According to the modified MacNab criteria, 86.1% of the patients achieved excellent or good outcomes. Intraoperative findings revealed fibrotic or hypertrophic foraminal stenosis in 86.1% patients (n = 31), whereas 13.9% of patients (n = 5) showed pedicle screw-related nerve root irritation. Five patients experienced transient postoperative dysesthesia, and no postoperative instability was observed. Conclusions: Radiculopathy at the fused segment is primarily caused by progressive mechanical foraminal compromise after fusion. TELF provides effective symptom relief through direct decompression and may serve as a less invasive alternative to revision fusion in selected patients. Full article
(This article belongs to the Special Issue Clinical Outcomes in Lumbar Spinal Stenosis Treatment)
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25 pages, 1032 KB  
Article
Mucoadhesive Nanostructured Lipid Carriers of Ketoconazole for Enhanced Dermal Delivery and Antifungal Activity: Formulation Optimization and In Vivo Evaluation
by Mashan Almutairi, Ahmed Adel Ali Youssef, Yazed S. Alsowaida, Ahmed Alobaida and Samir A. Ross
Pharmaceutics 2026, 18(6), 753; https://doi.org/10.3390/pharmaceutics18060753 (registering DOI) - 19 Jun 2026
Abstract
Background/Objective: Topical therapy remains a cornerstone in managing fungal infections due to the deep-seated nature of the pathogens and the persistence of the disease. Ketoconazole (KTZ) is a broad-spectrum antifungal agent, but its highly lipophilic nature presents considerable challenges in developing effective topical [...] Read more.
Background/Objective: Topical therapy remains a cornerstone in managing fungal infections due to the deep-seated nature of the pathogens and the persistence of the disease. Ketoconazole (KTZ) is a broad-spectrum antifungal agent, but its highly lipophilic nature presents considerable challenges in developing effective topical formulations. Additionally, oral KTZ has been subject to labeling restrictions and market withdrawal due to its association with severe hepatic adverse effects. This study was conducted to design, optimize, and evaluate KTZ-loaded nanolipid carriers (NLCs; KTZ-NLCs) as a delivery platform that could improve cutaneous bioavailability and enhance antifungal activity. Methods: The optimized KTZ-NLCs were further incorporated into a mucoadhesive system (KTZ-NLCs-C) through the inclusion of Carbopol® 940 NF, aiming to improve the retention of the formulation on the skin surface. NLCs were characterized in terms of their physical appearance, particle size, polydispersity index, zeta potential, pH, viscosity, drug content, and entrapment efficiency. The optimized KTZ-NLC and KTZ-NLCs-C formulations were subsequently assessed for in vitro drug release, ex vivo skin permeation and deposition, as well as in vivo skin irritation. Results: In vitro release studies revealed that nanocarrier systems provided a sustained release of KTZ over 24 h. The ex vivo transdermal flux and permeability coefficient of KTZ from the lead KTZ-NLCs-C formulation were approximately 2.8-fold greater than those achieved with the marketed cream formulation. The in vivo skin irritation studies indicate that NLC-based formulations are suitable for topical applications. The lead formulation was stable for 90 days (the final time point evaluated) under refrigerated and room-temperature storage conditions. Conclusions: These findings suggest that the NLC-based system is a promising platform for the topical delivery of KTZ and has the potential to enhance the therapeutic outcomes for patients with superficial fungal infections. Full article
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23 pages, 1370 KB  
Article
A Novel Herbal Nano-Based Ear Drop with Ocimum gratissimum Essential Oil: An Alternative Strategy for Managing Otomycosis
by Bac V. G. Nguyen, Hoai Thu Le, Tien-Trung Dao, Quy-Nguyen Doan, Duc-Huy Pham, Nghi Bao Nguyen, Minh-Tri Le, Du-Thien Nguyen and Phuoc-Vinh Nguyen
Pharmaceutics 2026, 18(6), 751; https://doi.org/10.3390/pharmaceutics18060751 (registering DOI) - 18 Jun 2026
Abstract
Background/Objectives: Otomycosis is a recurrent fungal infection of the external auditory canal. This disease is difficult to manage with current antifungal agents due to irritation, ototoxicity risk, and emerging resistance. Natural essential oils have been proposed as alternatives, yet their clinical application [...] Read more.
Background/Objectives: Otomycosis is a recurrent fungal infection of the external auditory canal. This disease is difficult to manage with current antifungal agents due to irritation, ototoxicity risk, and emerging resistance. Natural essential oils have been proposed as alternatives, yet their clinical application in otic formulations remains limited due to their poor solubility and stability. In this study, we report the first ear-drop formulation combining microemulsified Ocimum gratissimum essential oil and acetic acid for otomycosis treatment. Methods: The essential oil was quality-validated with eugenol content superior to 60%. A systematic formulation study was performed, and the Tween 20/isopropanol (4:1, w/w) mixture was selected as the optimal surfactant system, yielding a stable microemulsion with high encapsulation efficiency (~98%) and relevant physicochemical stability (up to 28 days). The final formulation containing 1% acetic acid and 0.3% micro-emulsified essential oil met pharmacopeial requirements in terms of appearance, pH, viscosity, and microbial limits. Results: Importantly, this micro-emulsified eardrop demonstrated significantly greater in vitro antifungal activity than 3% boric acid and 2% acetic acid eardrops in twelve clinical fungal isolates from Vietnamese swimmers, especially on Curvularia, Cunninghamella, Aspergillus terreus, and Bipolaris. Although less pronounced than 1% clotrimazole, the finalized formulation demonstrates better antifungal kinetics and a broader activity spectrum. Conclusions: This work provides relevant experimental evidence on the use of Ocimum gratissimum essential oil in a microemulsion delivery system and demonstrates its efficacy against clinically relevant otomycosis pathogens. The results establish a foundation for future in vivo and clinical studies. Full article
(This article belongs to the Special Issue Nanoemulsions for Pharmaceutical and Biomedical Applications)
13 pages, 1499 KB  
Article
A New Ultrasound Method to Study the Relations Between Ileocecal Valve Incontinence and Inflammation in Metabolic Associated Steatotic Liver Disease
by Antonio Salvati, Lorenzo Bertellotti, Francesco Faita, Daniela Campani, Giovanni Petralli, Simone Cappelli, Ferruccio Bonino and Maurizia Rossana Brunetto
Livers 2026, 6(3), 54; https://doi.org/10.3390/livers6030054 - 18 Jun 2026
Abstract
Background: Small intestine bacterial overgrowth (SIBO) is associated with steatohepatitis (SH) in subjects with metabolic-associated steatotic liver disease (MASLD). The impact of ileocecal valve (ICV) incontinence, a major cause of SIBO in patients with MASLD, remains unknown because of the unmet need for [...] Read more.
Background: Small intestine bacterial overgrowth (SIBO) is associated with steatohepatitis (SH) in subjects with metabolic-associated steatotic liver disease (MASLD). The impact of ileocecal valve (ICV) incontinence, a major cause of SIBO in patients with MASLD, remains unknown because of the unmet need for a non-X-ray-dependent diagnosis. Methods: Exploiting water as contrast medium and colonic irrigation via a hydro-colon machine (Clean Colon Srl, Monza, Italy), we developed a new abdominal ultrasound (US) procedure for diagnosing and grading ICV incontinence. In a pilot, observational, feasibility and safety study, we correlated a new ICV incontinence parameter with irritable bowel syndrome (IBS, ROMA IV criteria), serum transaminases (AST, ALT), platelet counts, FIB-4, US liver steatosis and stiffness (LS, measured by Shear Wave and Transient Elastography, SWE and TE). Results: We prospectively studied 32 consecutive subjects with IBS who underwent a pre-colonoscopy colon cleansing after informed consent: 19 males (59%), body mass index (BMI) 26.6 ± 2.6 kg/m2, age 57 ± 19 years, 16 (50%) with US liver steatosis. The half-hour (27 min, range 20–35 min) procedure was safe and well tolerated except in two males with prostate hypertrophy. ICV incontinence was graded (after 2500–3000 mL irrigation) according to cecum/right-colon distention with/without (immediate or delayed) reflux into terminal ileum (TI): 0 = cecum distension without TI reflux; 1 = cecum distension with TI reflux; 2 = absence of cecum distension with TI reflux. Cecum/right-colon distention (grade 0 or 1) was perceived by the patients whereas the right colon irrigation with complete ICV incontinence (grade 2) was symptomless. ICV continence associated with LS (p ≤ 0.0001). A histologic diagnosis of non-alcoholic steatohepatitis was confirmed in a 35-year-old obese male with SIBO and LS > 8 kPa (8.7/8.5 kPa by SWE/TE):steatosis (grade S3) with hepatocyte ballooning, lobular inflammation (grade 6/8) without fibrosis (stage 0/4, F0). Conclusions: The new US-based approach provides a feasible, easy-to-perform, mini-invasive tool for the diagnosis and grading of ICV incontinence. Preliminary results prompt prospective studies investigating the impact of ICV incontinence as a possible co-factor of steatohepatitis in patients with MASLD. Full article
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20 pages, 1786 KB  
Article
GPCS Stratification of Exercise-Induced Gut Microbiota and Metabolome Remodeling in IBS: An Exploratory Multi-Omics Study
by Francesco Maria Calabrese, Antonella Bianco, Margherita Chiarini, Laura Prospero, Isabella Franco, Matteo Bernardi, Giuseppe Celano, Maria Calasso, Giuseppe Riezzo, Nicola Verrelli, Benedetta D’Attoma, Antonia Ignazzi, Carmen Aurora Apa, Gianluigi Giannelli, Maria De Angelis and Francesco Russo
Nutrients 2026, 18(12), 1972; https://doi.org/10.3390/nu18121972 - 18 Jun 2026
Abstract
Background/Objectives: Exercise is increasingly recognized as a modulator of host–microbiome interactions, yet its role in irritable bowel syndrome (IBS) remains poorly characterized. Methods: In this prospective, single-arm, before-and-after interventional study, we used an integrated multi-omics approach based on metataxonomics and metabolomics to assess [...] Read more.
Background/Objectives: Exercise is increasingly recognized as a modulator of host–microbiome interactions, yet its role in irritable bowel syndrome (IBS) remains poorly characterized. Methods: In this prospective, single-arm, before-and-after interventional study, we used an integrated multi-omics approach based on metataxonomics and metabolomics to assess the effects of a structured 12-week moderate aerobic exercise program in 80 patients with mild-to-moderate IBS, stratified by Global Physical Capacity Score (GPCS). Biochemical and inflammatory markers have been gathered. Results: Exercise did not alter overall microbial diversity but selectively enriched short-chain fatty acid (SCFA)-producing taxa and remodeled the volatile organic compound (VOC) profile toward a more efficient metabolic state. Notably, conventional biochemical and inflammatory markers failed to distinguish response subgroups, whereas GPCS stratification revealed distinct microbial and metabolomic trajectories. Individuals with higher baseline physical capacity had higher acetate levels and lower levels of VOCs associated with dysbiosis and oxidative stress. Conclusions: Our results suggest that baseline physical capacity is a primary determinant of the microbiome’s responsiveness to exercise, challenging the reliance on static biochemical profiling. Despite the lack of a control group and the exploratory nature of some metabolomic signals, this study provides a framework for precision exercise interventions in IBS. Our work identifies GPCS as a clinically relevant stratification tool. The full trial protocol is registered on ClinicalTrials.gov under the identifier NCT05453084. Full article
(This article belongs to the Section Nutritional Immunology)
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15 pages, 32364 KB  
Article
One-Step Combustion Synthesis of Carbon-Doped BiVO4 Yellow Pigments with Enhanced Visible-Light Photocatalytic Antibacterial Performance
by Xiaojun Zhang, Tianxu Wang, Feng Jiang, Xiaoli Su, Xun Liu, Yanqiao Xu, Guo Feng and Qian Wu
Molecules 2026, 31(12), 2141; https://doi.org/10.3390/molecules31122141 - 17 Jun 2026
Viewed by 94
Abstract
To integrate high chromaticity with visible-light-driven antibacterial functionality in yellow inorganic pigments, carbon-doped BiVO4 (C-BiVO4) pigments were synthesized via a one-step self-propagating combustion synthesis (SCS) using citric acid as a fuel and carbon source. The effects of citric acid dosage [...] Read more.
To integrate high chromaticity with visible-light-driven antibacterial functionality in yellow inorganic pigments, carbon-doped BiVO4 (C-BiVO4) pigments were synthesized via a one-step self-propagating combustion synthesis (SCS) using citric acid as a fuel and carbon source. The effects of citric acid dosage on phase composition, morphology, chromatic performance, and antibacterial activity were systematically investigated. The results indicate that carbon doping induces lattice expansion and oxygen vacancy formation, modulates the electronic band structure, and significantly suppresses photogenerated electron-hole recombination. At an optimal citric acid to BiVO4 molar ratio of 1.2, the pigment exhibits excellent yellow chromaticity (b* = 79.71). Under visible-light irradiation, C-BiVO4 achieves a methylene blue photodegradation rate of 96.63% and an E. coli inactivation efficiency of 99.99%, substantially outperforming undoped BiVO4. Moreover, the C-BiVO4 yellow pigment shows good dispersibility and thermal stability in PMMA and glass matrices and passes acute skin irritation and dermal toxicity tests, confirming its low toxicity and non-irritating nature. This work provides a new strategy for developing environmentally friendly inorganic pigments that combine high chromaticity with photocatalytic antibacterial functionality. Full article
(This article belongs to the Special Issue Nanochemistry in Asia)
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29 pages, 1025 KB  
Review
Targeting the Human Gut Microbiota—Between Conventional Therapy and Precision Genetic Engineering
by Naomi-Adina Ciurea, Laura Mahdi, Annarita Graziani, Agostino Di Ciaula, Piero Portincasa and Mohamad Khalil
Nutrients 2026, 18(12), 1958; https://doi.org/10.3390/nu18121958 - 17 Jun 2026
Viewed by 57
Abstract
The gut microbiota is increasingly examined as a therapeutic target because it contributes to epithelial barrier integrity, microbial metabolite production, bile acid transformation, immune regulation, and communication between the gut and distant organs. This structured narrative review synthesizes evidence on microbiota involvement in [...] Read more.
The gut microbiota is increasingly examined as a therapeutic target because it contributes to epithelial barrier integrity, microbial metabolite production, bile acid transformation, immune regulation, and communication between the gut and distant organs. This structured narrative review synthesizes evidence on microbiota involvement in metabolic, gastrointestinal, hepatic, cancer, and neuroimmune conditions, including MASLD/MASH, inflammatory bowel disease, irritable bowel syndrome, obesity, type 2 diabetes, hypertension, colorectal cancer, Parkinson’s disease, and autism spectrum disorder. Across these conditions, microbiome findings are biologically plausible but heterogeneous. Many associations are shaped by diet, geography, medication exposure, host genetics, disease stage, sampling methods, and analytical pipelines. Microbial alterations should therefore be interpreted as context-dependent signals and candidate modifiers rather than universal causal markers. Conventional microbiota targeted strategies include diet, physical activity, prebiotics, probiotics, synbiotics, postbiotics, and fecal microbiota transplantation. These approaches are clinically familiar, but their effects are often broad, host specific, strain dependent, and difficult to assign to one mechanism. Fecal microbiota transplantation has the clearest clinical role in recurrent Clostridioides difficile infection, while evidence for most other indications remains inconsistent. Engineered microbial therapeutics offer greater experimental precision through signal sensing, payload delivery, metabolic modulation, and genetic circuit design. However, most evidence remains preclinical or early translational. Progress requires stronger human trials, standardized methods, mechanistic validation, safety monitoring, ecological containment, transparent reporting, and proportionate regulation. Full article
(This article belongs to the Special Issue Polyphenols in Gut–Liver Homeostasis)
18 pages, 3721 KB  
Review
Functional Food Containing Probiotics–Differences in Health Benefits Among Men and Women
by Barbara Sionek and Piotr Szymański
Appl. Sci. 2026, 16(12), 6120; https://doi.org/10.3390/app16126120 - 17 Jun 2026
Viewed by 148
Abstract
The consumption of functional foods, especially enriched by probiotics, is appreciated by a growing group of consumers. In this comprehensive review, the comparison of food probiotics’ health advantages between adult healthy women and healthy men was demonstrated with the aim of indicating the [...] Read more.
The consumption of functional foods, especially enriched by probiotics, is appreciated by a growing group of consumers. In this comprehensive review, the comparison of food probiotics’ health advantages between adult healthy women and healthy men was demonstrated with the aim of indicating the target group of consumers. Based on clinical studies and meta-analyses, in the context of sex differences, the impact of functional foods with probiotics on selected disease development and disease course, as well as on the potential health benefits, was discussed. Significantly population-related and most common health abnormalities, such as obesity, metabolic disorders, hypertension, irritable bowel syndrome, and functional gastrointestinal disorders, were analysed. There is a sex-dependent variety of gut microorganisms, and a greater diversity of the gut microbiome is found in women. The major differences between men and women considered in the study included higher prevalence of irritable bowel syndrome and obesity in women, a different lipid profile, and different age-related hypertension occurrence in both groups. Life expectancy has also been taken into account. According to the statistical data, women live longer, experience more health problems in the course of life, and therefore will probably more frequently seek functional food. In general, consumption of functional foods should be supported and recommended for the entire population. The open questions that need to be clarified are if the sex-dependent strategy is justified for choosing specified functional foods and probiotic strains. Full article
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15 pages, 733 KB  
Article
Non-Invasive Multimarker Strategy Combining IL-17A, Neutrophil–Albumin Ratio, and Fecal Calprotectin for Accurate Discrimination of IBD from IBS-D
by Gamal Othman, Maysaa El Sayed Zaki, Nader Elmalki Elmalki, Abdelnaser A. Badawy and Samir A. Afifi
Int. J. Mol. Sci. 2026, 27(12), 5450; https://doi.org/10.3390/ijms27125450 - 16 Jun 2026
Viewed by 89
Abstract
Differentiating inflammatory bowel disease (IBD) from diarrhea-predominant irritable bowel syndrome (IBS-D) remains a major clinical challenge due to overlapping symptoms and the limited specificity of single biomarkers. A reliable, non-invasive multimarker approach is needed to improve diagnostic accuracy and reduce unnecessary endoscopic procedures. [...] Read more.
Differentiating inflammatory bowel disease (IBD) from diarrhea-predominant irritable bowel syndrome (IBS-D) remains a major clinical challenge due to overlapping symptoms and the limited specificity of single biomarkers. A reliable, non-invasive multimarker approach is needed to improve diagnostic accuracy and reduce unnecessary endoscopic procedures. To evaluate the diagnostic performance of serum interleukin-17A (IL-17A), neutrophil-to-albumin ratio (NAR), and fecal calprotectin (FCP), individually and in combination, for discriminating IBD from IBS-D and healthy controls in Egyptian patients. In this case–control study, 300 participants (100 with IBD, 100 with IBS-D, and 100 healthy controls) were enrolled. Serum IL-17A, NAR, and FCP were measured, and subgroup analysis was performed for infected and non-infected IBS-D patients. Diagnostic performance was assessed using receiver operating characteristic (ROC) curve analysis, with optimal cutoffs determined by the Youden index. A combined biomarker model was constructed using logistic regression. All biomarkers demonstrated a significant stepwise increase from healthy controls to IBS-D and IBD (p < 0.001). IL-17A, NAR, and FCP were elevated in IBS-D compared with controls, indicating low-grade inflammation, but were highest in IBD. No significant differences were observed between infected and non-infected IBS-D patients. Among individual markers, NAR showed the highest diagnostic accuracy (AUC = 0.923), followed by FCP (AUC = 0.884) and IL-17A (AUC = 0.859). The combined model significantly improved performance (AUC = 0.973), achieving 89% sensitivity and 96% specificity. IBS-D is associated with measurable systemic and intestinal inflammation independent of infection status. The combined biomarker model integrating IL-17A, neutrophil–albumin ratio, and fecal calprotectin demonstrated promising discriminatory performance for differentiating IBD from IBS-D. These findings suggest the potential applicability of combined non-invasive biomarkers in future diagnostic stratification approaches. However, the model was developed and evaluated within a single cohort, and external validation in independent populations is required before future potential clinical application. A multimarker diagnostic panel integrating IL-17A, neutrophil–albumin ratio, and fecal calprotectin demonstrated promising diagnostic performance for differentiating inflammatory bowel disease from IBS-D. The combined model may contribute to future diagnostic stratification strategies in patients with chronic diarrhea. However, these findings were derived from a single cohort and require validation in independent populations before broader clinical application. Full article
(This article belongs to the Section Molecular Biology)
15 pages, 1809 KB  
Article
Viable and Heat-Inactivated Bifidobacterium bifidum MIMBb75 Protect the Intestinal Barrier
by Martin Storr and Martin Gschwender
Microorganisms 2026, 14(6), 1349; https://doi.org/10.3390/microorganisms14061349 - 16 Jun 2026
Viewed by 159
Abstract
Irritable bowel syndrome (IBS) is a common disorder of gut–brain interaction (DGBI) of multifactorial genesis. Studies consistently show a disrupted intestinal barrier with increased permeability in IBS patients, regardless of subtype. This allows facultative pathogenic bacteria to translocate into underlying body tissue and [...] Read more.
Irritable bowel syndrome (IBS) is a common disorder of gut–brain interaction (DGBI) of multifactorial genesis. Studies consistently show a disrupted intestinal barrier with increased permeability in IBS patients, regardless of subtype. This allows facultative pathogenic bacteria to translocate into underlying body tissue and to initiate or exacerbate IBS symptoms. Protecting the intestinal barrier is therefore a primary therapeutic target. Bifidobacterium bifidum MIMBb75 has proven its efficacy in IBS both in its viable and heat-inactivated forms. Its efficacy is thought to be mediated by the physical adhesion of B. bifidum MIMBb75 to intestinal epithelial cells, thereby protecting the intestinal barrier. In the present study, we show—using a Caco-2 model—that this strain-specific adhesion is facilitated by the high cell surface hydrophobicity of B. bifidum MIMBb75, which is retained following heat inactivation. In line with these adhesive properties, both viable and heat-inactivated B. bifidum MIMBb75 protect the epithelial barrier, as indicated by an increased transepithelial electrical resistance in Caco-2 monolayers. Together, these findings strongly support a physical mode of action in which both viable and heat-inactivated B. bifidum MIMBb75 adhere to the epithelial surface and act, figuratively, as a protective plaster on the epithelial barrier. Full article
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16 pages, 1139 KB  
Article
Twelve-Month Real-World Outcomes of Tezepelumab in Severe Asthma: Clinical Remission, Biomarker Changes, and Trigger Burden—A SANI Multicenter Cohort
by Stefania Nicola, Simone Negrini, Fulvia Ribolla, Giuseppe Guida, Rocco Francesco Rinaldo, Benedetta Bondi, Iuliana Badiu, Federica Corradi, Anna Quinternetto, Ilaria Vitali, Luca Lo Sardo, Benedetta Crida, Linda Mhimid, Sofia Luisa Tocci, Marcelo Teocchi, Asia Milione, Marta Marengo, Enrico Heffler, Giorgio Walter Canonica, Francesco Blasi, Pierluigi Paggiaro, Marzia Boem, Stefania Basiglio, Lucrezia Alessi, Fulvio Braido, Fabio Luigi Massimo Ricciardolo, Paolo Solidoro, Diego Bagnasco, Luisa Brussino and on behalf of the SANI Study Groupadd Show full author list remove Hide full author list
J. Pers. Med. 2026, 16(6), 321; https://doi.org/10.3390/jpm16060321 - 15 Jun 2026
Viewed by 169
Abstract
Background/Objectives: Tezepelumab targets thymic stromal lymphopoietin and has broad efficacy in severe asthma, yet real-world evidence on patient-reported trigger burden remains limited. We assessed 12-month outcomes after tezepelumab, focusing on clinical remission, biomarkers, and trigger profiling as complementary dimensions of response. Methods [...] Read more.
Background/Objectives: Tezepelumab targets thymic stromal lymphopoietin and has broad efficacy in severe asthma, yet real-world evidence on patient-reported trigger burden remains limited. We assessed 12-month outcomes after tezepelumab, focusing on clinical remission, biomarkers, and trigger profiling as complementary dimensions of response. Methods: In this multicenter longitudinal real-world observational cohort based on routine clinical follow-up and Severe Asthma Network in Italy (SANI) registry data, 43 adults with severe asthma treated with tezepelumab at four Italian SANI reference centers were evaluated at baseline and, when available, after 1, 3, 6, and 12 months. Outcomes included exacerbations, lung function, type 2 biomarkers, the Asthma Control Test, SNOT-22, trigger categories, Asthma Trigger Inventory (ATI) scores, and SANI-defined clinical remission. Results: Among 22 patients with 12-month follow-up data, mean annualized exacerbations decreased from 4.30 ± 2.77 to 0.36 ± 0.49 (p < 0.001), and 14/22 (63.6%) were exacerbation-free. Asthma control improved, whereas FEV1 remained stable. FeNO and blood eosinophils decreased at selected time points. The number of reported trigger categories was lower at 6 months (p < 0.001), and physical exertion, smoke, irritants, and infection-related ATI domains improved longitudinally. Complete clinical remission was achieved in 5/22 patients (22.7%). Conclusions: Tezepelumab was associated with reduced exacerbations, improved asthma control, and lower patient-reported trigger burden. Structured trigger profiling may provide an exploratory patient-centered dimension for assessing treatment response in severe asthma. Full article
(This article belongs to the Special Issue Mechanisms of Airway Inflammation in Asthma)
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29 pages, 2912 KB  
Review
Advances in Scalp Microbiome Research: Molecular Insights into the Metabolism-Inflammation-Barrier Axis and Dandruff Pathogenesis
by Le Deng, Xiao Ling, Li Li, Youjie He and Miaomiao Guo
Molecules 2026, 31(12), 2093; https://doi.org/10.3390/molecules31122093 - 14 Jun 2026
Viewed by 319
Abstract
Dandruff (DF) is a prevalent, recurrent inflammatory scalp disorder increasingly recognized as a complex state of functional dysbiosis rather than a simple Malassezia overcolonization. The scalp microbiome is predominantly shaped by Malassezia species (M. restricta and M. globosa), Cutibacterium, and [...] Read more.
Dandruff (DF) is a prevalent, recurrent inflammatory scalp disorder increasingly recognized as a complex state of functional dysbiosis rather than a simple Malassezia overcolonization. The scalp microbiome is predominantly shaped by Malassezia species (M. restricta and M. globosa), Cutibacterium, and Staphylococcus species. Recent multi-omics evidence indicates that DF pathogenesis is driven by the destabilization of microbial interaction networks and strain-level functional heterogeneity, characterized by the disruption of the C. acnes/S. epidermidis balance and the opportunistic expansion of Staphylococcus aureus. Mechanistically, Malassezia utilizes its lipolytic repertoire to hydrolyze host sebum into irritant free fatty acids and peroxides. Concurrently, oxidative metabolites like squalene peroxide (SQOOH) penetrate the stratum corneum to activate the NF-κB and aryl hydrocarbon receptor (AhR) pathways, triggering a pro-inflammatory cascade that overexpresses keratins (K6/16/17) and downregulates filaggrin. This molecular cascade drives abnormal keratinocyte turnover and lipidomic remodeling, establishing a self-perpetuating “metabolism–inflammation–barrier disruption” pathological cycle. This review systematically elucidates the molecular etiology of DF as an ecological disorder driven by a tripartite imbalance among the microbiome, host physiology, and the environmental niche. We propose that next-generation therapeutic paradigms must transcend traditional antifungal eradication, focusing instead on targeted molecular intervention and microecological restoration to recalibrate overall scalp homeostasis. Full article
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31 pages, 18528 KB  
Article
Development and Characterization of a Cold Cream with Antioxidant Properties from Bougainvillea Extract
by Yahya Alhamhoom, Umme Hani, Nagashubha Bobbarjang, Md Abdur Rashid, Srilekha Surapareddy, Kiran Sai Maccha, Uma Maheshwar Rao Vattikuti and Fahad AlQahtani
Pharmaceuticals 2026, 19(6), 932; https://doi.org/10.3390/ph19060932 - 12 Jun 2026
Viewed by 363
Abstract
Background: Oxidative stress contributes significantly to premature skin aging and inflammatory dermatological conditions. While plant-derived antioxidants have demonstrated considerable promise in topical applications, Bougainvillea glabra Choisy remains underexplored in standardized pharmaceutical dosage form development despite its documented phytochemical richness. Objective: This study aimed [...] Read more.
Background: Oxidative stress contributes significantly to premature skin aging and inflammatory dermatological conditions. While plant-derived antioxidants have demonstrated considerable promise in topical applications, Bougainvillea glabra Choisy remains underexplored in standardized pharmaceutical dosage form development despite its documented phytochemical richness. Objective: This study aimed to develop, standardize, and characterize topical cold cream formulations incorporating B. glabra ethanolic leaf extract, with HPTLC-based quantification of marker compounds, validated antioxidant assessment, and preliminary dermal safety evaluation. Methods: The ethanolic leaf extract was prepared by maceration and characterized by preliminary phytochemical screening and HPTLC fingerprinting with quantitative densitometric analysis of quercetin and pinitol. Three cold cream formulations were developed at 10% (F1), 20% (F2), and 30% (w/w) (F3) extract loading. Formulations were evaluated for organoleptic properties, pH, homogeneity, spreadability, and viscosity. Antioxidant activity was assessed using a validated methanol extraction procedure followed by DPPH radical scavenging and potassium permanganate reduction assays. Ex vivo skin permeation was evaluated using Franz diffusion cells with freshly excised goat skin. Accelerated stability was conducted at 40 ± 2 °C/75 ± 5% RH for 90 days with HPTLC-based marker retention monitoring. Primary dermal safety was assessed in Wistar albino rats (n = 6) following OECD Test Guideline 404. Results: Quantitative HPTLC confirmed quercetin (4.82 ± 0.14 mg/g dry extract) and pinitol (2.31 ± 0.09 mg/g) as marker compounds, with linearly increasing content across F1–F3. All formulations demonstrated acceptable physicochemical properties (pH 5.7–5.9, viscosity 440,000–460,000 cP, spreadability 11.8 ± 0.3 cm·g/s). F3 exhibited the highest DPPH scavenging activity (56.68 ± 1.05%) with IC50 of 1.3 ± 0.1% w/v, demonstrating a 3.2-fold improvement over F1. Extraction recovery from the cream matrix was 96.4–97.1%, validating the antioxidant data. Ex vivo quercetin permeation through goat skin reached 51.3 ± 2.8 μg/cm2 at 24 h for F3, following Higuchi diffusion kinetics (R2 > 0.99). No dermal irritation was observed (Primary Irritation Index = 0). Accelerated stability confirmed ≥98.3% retention of both marker compounds and antioxidant activity after 90 days. Conclusions: B. glabra leaf extract was successfully incorporated into a physicochemically stable, non-irritating cold cream with demonstrated dose-dependent antioxidant efficacy and cutaneous delivery capability. The study establishes preliminary dermal safety and in vitro antioxidant efficacy warranting further controlled clinical evaluation. Full article
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37 pages, 2166 KB  
Article
Bioactivity-Guided Isolation of Stigmasterol from Bursera bipinnata Resin: Pharmacological Evidence for Wound-Healing Activity
by Luis Rubén Martínez-Cuevas, María Crystal Columba-Palomares, Baldomero Esquivel-Rodríguez, Alejandro Pérez-Feria, Vera L. Petricevich, Edda Sciutto, José Alejandro Espinosa-Cerón and Verónica Rodríguez-López
Pharmaceuticals 2026, 19(6), 931; https://doi.org/10.3390/ph19060931 - 12 Jun 2026
Viewed by 328
Abstract
Background/Objectives: Bursera bipinnata (DC.) Engl. resin (locally known as “copal blanco”) is traditionally used in Mexican ethnomedicine to treat infected wounds and skin inflammation, but the bioactive constituents underlying these effects remain largely uncharacterized. This study aimed to identify the compounds responsible [...] Read more.
Background/Objectives: Bursera bipinnata (DC.) Engl. resin (locally known as “copal blanco”) is traditionally used in Mexican ethnomedicine to treat infected wounds and skin inflammation, but the bioactive constituents underlying these effects remain largely uncharacterized. This study aimed to identify the compounds responsible for the wound-healing properties of the resin through bioactivity-guided fractionation and to evaluate their anti-inflammatory and antibacterial activities as complementary mechanisms supporting tissue repair. Methods: Crude resin (1.2–5.0 mg/mL) was assayed for anti-inflammatory activity in the TPA-induced ear-edema model in BALB/c mice, for antibacterial activity (MIC) against six clinically relevant strains, and for wound-healing activity in a murine excisional model with pirfenidone (PFD) as the reference drug (n = 5 per group). Bioactivity-guided fractionation followed by spectroscopic elucidation (1H- and 13C-NMR, IR, EI-MS) led to the isolation of five constituents. Stigmasterol, the most active compound, was subsequently evaluated in an LPS-induced systemic inflammation model (oral administration, 20 mg/kg/day × 3 days) to characterize its immunomodulatory profile (TNF-α, IL-1β, IL-6, IFN-γ, IL-10) and in the wound-healing model to quantify local IL-6, IL-10 and TGF-β1 in skin homogenates. Results: The crude resin (5.0 mg/mL) achieved 99.63% wound closure at day 12 and a 49.08% reduction in TPA-induced ear edema, comparable to indomethacin (55.76%). The resin displayed selective antibacterial activity against Streptococcus pyogenes (MIC 125 µg/mL) and Salmonella typhimurium (MIC 250 µg/mL). Bioactivity-guided fractionation yielded the phytosterol stigmasterol (1), three lupane-type triterpenoids (lupeol acetate (2), lupenone (3), 3-epilupeol (5)), and the sesquiterpenoid caryophyllene oxide (4). At an equimolar 1 µM concentration, stigmasterol (1) shortened the mean wound-healing time to 10.3 ± 0.4 days, comparable to pirfenidone, and was associated with attenuation of systemic TNF-α, IL-1β and IL-6 peaks and with sustained local IL-10 and TGF-β1 expression. Histological assessment confirmed accelerated re-epithelialization and improved collagen organization. The resin was non-irritant in the OECD 404 acute dermal test (Primary Irritation Index = 0.00). Conclusions: These findings provide pharmacological evidence supporting the traditional use of B. bipinnata resin for wound healing. Stigmasterol (1), together with the lupane-type triterpenoids lupenone (3) and 3-epilupeol (5), were identified as key bioactive constituents. The data are consistent with a coordinated immunomodulation, in which stigmasterol is associated with reduced systemic pro-inflammatory signalling and increased local IL-10/TGF-β1 expression, an interpretation that should be confirmed in chronic and impaired wound-healing models. Full article
(This article belongs to the Section Natural Products)
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19 pages, 3475 KB  
Article
Multidirectional Surface Roughness Characterization of Woven Fabrics for Hospital Applications
by Ana Kalazić, Ana Palčić, Snježana Brnada and Sandra Flinčec Grgac
Fibers 2026, 14(6), 73; https://doi.org/10.3390/fib14060073 - 12 Jun 2026
Viewed by 130
Abstract
Surface roughness of woven fabrics plays a key role in tactile comfort and skin–textile interaction, particularly in medical applications involving prolonged contact with human skin. This study focuses on the surface roughness of woven fabrics in plain and twill (1/3 S) weaves intended [...] Read more.
Surface roughness of woven fabrics plays a key role in tactile comfort and skin–textile interaction, particularly in medical applications involving prolonged contact with human skin. This study focuses on the surface roughness of woven fabrics in plain and twill (1/3 S) weaves intended for hospital bed sheets and bedding applications. Plain weave represents a structurally symmetric system, while twill weave exhibits a pronounced diagonal structure. Roughness was evaluated using the Fabric Touch Tester (FTT) and further analyzed through amplitude (Rq), height distribution (Rku), and frequency-related parameters (linear peak density) obtained by signal processing and peak analysis in OriginPro 2026. The results showed that weave structure is the dominant factor influencing surface topography. Plain weave fabrics exhibited higher amplitude roughness and more uniform height distribution, while twill fabrics showed lower global roughness but stronger directional dependence, particularly in diagonal directions. Linear peak density was not significantly affected by laundering cycles, fiber composition, or finishing, but was strongly dependent on weave type. The findings demonstrate that due to the orthotropic nature of woven fabrics, surface roughness, derived from surface topography, cannot be adequately described by a single parameter, and that a combined analysis of amplitude and spatial descriptors is required, with the surface being evaluated not only along the principal symmetry directions (warp and weft) but also in off-axis directions. These results provide valuable insight for the design of hospital textiles with improved tactile comfort and reduced risk of skin irritation. Full article
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