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

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
remove_circle_outline
remove_circle_outline
remove_circle_outline

Article Types

Countries / Regions

remove_circle_outline
remove_circle_outline
remove_circle_outline
remove_circle_outline
remove_circle_outline
remove_circle_outline
remove_circle_outline

Search Results (466)

Search Parameters:
Keywords = therapeutic equivalence

Order results
Result details
Results per page
Select all
Export citation of selected articles as:
25 pages, 4393 KiB  
Article
Development and Preclinical Evaluation of Fixed-Dose Capsules Containing Nicergoline, Piracetam, and Hawthorn Extract for Sensorineural Hearing Loss
by Lucia Maria Rus, Andrei Uncu, Sergiu Parii, Alina Uifălean, Simona Codruța Hegheș, Cristina Adela Iuga, Ioan Tomuță, Ecaterina Mazur, Diana Șepeli, Irina Kacso, Fliur Macaev, Vladimir Valica and Livia Uncu
Pharmaceutics 2025, 17(8), 1017; https://doi.org/10.3390/pharmaceutics17081017 (registering DOI) - 5 Aug 2025
Abstract
Background: Fixed-dose combinations have advanced in many therapeutic areas, including otorhinolaryngology, where hearing disorders are increasingly prevalent. Objectives: The present study focuses on developing and evaluating a new capsule combining nicergoline (NIC), piracetam (PIR), and hawthorn extract (HE) for the management of sensorineural [...] Read more.
Background: Fixed-dose combinations have advanced in many therapeutic areas, including otorhinolaryngology, where hearing disorders are increasingly prevalent. Objectives: The present study focuses on developing and evaluating a new capsule combining nicergoline (NIC), piracetam (PIR), and hawthorn extract (HE) for the management of sensorineural hearing loss. Methods: The first phase methodology comprised preformulation studies (DSC, FTIR, and PXRD) to assess compatibility among active substances and excipients. Subsequently, four formulations were prepared and tested for flowability, dissolution behavior in acidic and neutral media, and stability under oxidative, thermal, and photolytic stress. Quantification of the active substances and flavonoids was performed using validated spectrophotometric and HPLC-UV methods. Results: Among the tested variants, the F1 formulation (4.5 mg NIC, 200 mg PIR, 50 mg HE, 2.5 mg magnesium stearate, 2.5 mg sodium starch glycolate, and 240.5 mg monohydrate lactose per capsule) displayed optimal technological properties, superior dissolution in acidic media, and was further selected for evaluation. The antioxidant activity of the formulation was confirmed through the 2,2-diphenyl-1-picrylhydrazyl (DPPH) assay, Trolox Equivalent Antioxidant Capacity (TEAC), and iron chelation tests, and was primarily attributed to the flavonoid content of the HE. Acute toxicity tests in mice and rats indicated a high safety margin (LD50 > 2500 mg/kg), while ototoxicity assessments showed no adverse effects on auditory function. Conclusions: The developed formulation displayed good stability, safety, and therapeutic potential, while the applied workflow could represent a model for the development of future fixed-dose combinations. Full article
(This article belongs to the Special Issue Natural Product Pharmaceuticals, 2nd Edition)
Show Figures

Figure 1

18 pages, 5256 KiB  
Article
Impact of Alginate Oligosaccharides on Ovarian Performance and the Gut Microbial Community in Mice with D-Galactose-Induced Premature Ovarian Insufficiency
by Yan Zhang, Hongda Pan, Dao Xiang, Hexuan Qu and Shuang Liang
Antioxidants 2025, 14(8), 962; https://doi.org/10.3390/antiox14080962 (registering DOI) - 5 Aug 2025
Abstract
Premature ovarian insufficiency (POI) is an important factor in female infertility and is often associated with oxidative stress. Alginate oligosaccharides (AOSs), derived from the degradation of alginate, have been demonstrated to have protective effects against various oxidative stress-related diseases. However, the impact of [...] Read more.
Premature ovarian insufficiency (POI) is an important factor in female infertility and is often associated with oxidative stress. Alginate oligosaccharides (AOSs), derived from the degradation of alginate, have been demonstrated to have protective effects against various oxidative stress-related diseases. However, the impact of AOSs on POI has not been previously explored. The current study explored the effects of AOSs on ovarian dysfunction in a mouse model of POI induced by D-galactose (D-gal). Female C57BL/6 mice were randomly divided into five groups: the control (CON), POI model (D-gal), and low-, medium-, and high-dose AOS groups (AOS-L, 100 mg/kg/day; AOS-M, 150 mg/kg/day; AOS-H, 200 mg/kg/day). For 42 consecutive days, mice in the D-gal, AOS-L, AOS-M, and AOS-H groups received daily intraperitoneal injections of D-gal (200 mg/kg/day), whereas those in the CON group received equivalent volumes of sterile saline. Following D-gal injection, AOSs were administered via gavage at the specified doses; mice in the CON and D-gal groups received sterile saline instead. AOS treatment markedly improved estrous cycle irregularities, normalized serum hormone levels, reduced granulosa cell apoptosis, and increased follicle counts in POI mice. Moreover, AOSs significantly reduced ovarian oxidative stress and senescence in POI mice, as indicated by lower levels of malondialdehyde (MDA), higher activities of catalase (CAT) and superoxide dismutase (SOD), and decreased protein expression of 4-hydroxynonenal (4-HNE), nitrotyrosine (NTY), 8-hydroxydeoxyguanosine (8-OHdG), and p16 in ovarian tissue. Analysis of the gut microbiota through 16S rRNA gene sequencing and short-chain fatty acid (SCFA) analysis revealed significant differences in gut microbiota composition and SCFA levels (acetic acid and total SCFAs) between control and D-gal-induced POI mice. These differences were largely alleviated by AOS treatment. AOSs changed the gut microbiota by increasing the abundance of Ligilactobacillus and decreasing the abundance of Clostridiales, Clostridiaceae, Marinifilaceae, and Clostridium_T. Additionally, AOSs mitigated the decline in acetic acid and total SCFA levels observed in POI mice. Notably, the total SCFA level was significantly correlated with the abundance of Ligilactobacillus, Marinifilaceae, and Clostridium_T. In conclusion, AOS intervention effectively mitigates ovarian oxidative stress, restores gut microbiota homeostasis, and regulates the microbiota–SCFA axis, collectively improving D-gal-induced POI. Therefore, AOSs represent a promising therapeutic strategy for POI management. Full article
(This article belongs to the Section Health Outcomes of Antioxidants and Oxidative Stress)
Show Figures

Figure 1

18 pages, 1621 KiB  
Article
The Evaluation of Cellulose from Agricultural Waste as a Polymer for the Controlled Release of Ibuprofen Through the Formulation of Multilayer Tablets
by David Sango-Parco, Lizbeth Zamora-Mendoza, Yuliana Valdiviezo-Cuenca, Camilo Zamora-Ledezma, Si Amar Dahoumane, Floralba López and Frank Alexis
Bioengineering 2025, 12(8), 838; https://doi.org/10.3390/bioengineering12080838 (registering DOI) - 1 Aug 2025
Viewed by 241
Abstract
This research demonstrates the potential of plant waste cellulose as a remarkable biomaterial for multilayer tablet formulation. Rice husks (RC) and orange peels (OC) were used as cellulose sources and characterized for a comparison with commercial cellulose. The FTIR characterization shows minimal differences [...] Read more.
This research demonstrates the potential of plant waste cellulose as a remarkable biomaterial for multilayer tablet formulation. Rice husks (RC) and orange peels (OC) were used as cellulose sources and characterized for a comparison with commercial cellulose. The FTIR characterization shows minimal differences in their chemical components, making them equivalent for compression into tablets containing ibuprofen. TGA measurements indicate that the RC is slightly better for multilayer formulations due to its favorable degradation profile. This is corroborated by an XRD analysis that reveals its higher crystalline fraction (~55%). The use of a heat press at combined high pressures and temperatures allows the layer-by-layer tablet formulation of ibuprofen, taken as a model drug. Additionally, this study compares the release profile of three types of tablets compressed with cellulose: mixed (MIX), two-layer (BL), and three-layer (TL). The MIX tablet shows a profile like that of conventional ibuprofen tablets. Although both BL and TL tablets significantly reduce their release percentage in the first hours, the TL ones have proven to be better in the long run. In fact, formulations made of extracted cellulose sandwiching ibuprofen display a zero-order release profile and prolonged release since the drug release amounts to ~70% after 120 h. This makes the TL formulations ideal for maintaining the therapeutic effect of the drug and improving patients’ wellbeing and compliance while reducing adverse effects. Full article
Show Figures

Figure 1

27 pages, 2602 KiB  
Article
Folate-Modified Albumin-Functionalized Iron Oxide Nanoparticles for Theranostics: Engineering and In Vitro PDT Treatment of Breast Cancer Cell Lines
by Anna V. Bychkova, Maria G. Gorobets, Anna V. Toroptseva, Alina A. Markova, Minh Tuan Nguyen, Yulia L. Volodina, Margarita A. Gradova, Madina I. Abdullina, Oksana A. Mayorova, Valery V. Kasparov, Vadim S. Pokrovsky, Anton V. Kolotaev and Derenik S. Khachatryan
Pharmaceutics 2025, 17(8), 982; https://doi.org/10.3390/pharmaceutics17080982 - 30 Jul 2025
Viewed by 334
Abstract
Background/Objectives: Magnetic iron oxide nanoparticles (IONPs), human serum albumin (HSA) and folic acid (FA) are prospective components for hybrid nanosystems for various biomedical applications. The magnetic nanosystems FA-HSA@IONPs (FAMs) containing IONPs, HSA, and FA residue are engineered in the study. Methods: [...] Read more.
Background/Objectives: Magnetic iron oxide nanoparticles (IONPs), human serum albumin (HSA) and folic acid (FA) are prospective components for hybrid nanosystems for various biomedical applications. The magnetic nanosystems FA-HSA@IONPs (FAMs) containing IONPs, HSA, and FA residue are engineered in the study. Methods: Composition, stability and integrity of the coating, and peroxidase-like activity of FAMs are characterized using UV/Vis spectrophotometry (colorimetric test using o-phenylenediamine (OPD), Bradford protein assay, etc.), spectrofluorimetry, dynamic light scattering (DLS) and electron magnetic resonance (EMR). The selectivity of the FAMs accumulation in cancer cells is analyzed using flow cytometry and confocal laser scanning microscopy. Results: FAMs (dN~55 nm by DLS) as a drug delivery platform have been administered to cancer cells (human breast adenocarcinoma MCF-7 and MDA-MB-231 cell lines) in vitro. Methylene blue, as a model photosensitizer, has been non-covalently bound to FAMs. An increase in photoinduced cytotoxicity has been found upon excitation of the photosensitizer bound to the coating of FAMs compared to the single photosensitizer at equivalent concentrations. The suitability of the nanosystems for photodynamic therapy has been confirmed. Conclusions: FAMs are able to effectively enter cells with increased folate receptor expression and thus allow antitumor photosensitizers to be delivered to cells without any loss of their in vitro photodynamic efficiency. Therapeutic and diagnostic applications of FAMs in oncology are discussed. Full article
Show Figures

Graphical abstract

21 pages, 14138 KiB  
Case Report
Multi-Level Oncological Management of a Rare, Combined Mediastinal Tumor: A Case Report
by Vasileios Theocharidis, Thomas Rallis, Apostolos Gogakos, Dimitrios Paliouras, Achilleas Lazopoulos, Meropi Koutourini, Myrto Tzinevi, Aikaterini Vildiridi, Prokopios Dimopoulos, Dimitrios Kasarakis, Panagiotis Kousidis, Anastasia Nikolaidou, Paraskevas Vrochidis, Maria Mironidou-Tzouveleki and Nikolaos Barbetakis
Curr. Oncol. 2025, 32(8), 423; https://doi.org/10.3390/curroncol32080423 - 28 Jul 2025
Viewed by 414
Abstract
Malignant mediastinal tumors are a group representing some of the most demanding oncological challenges for early, multi-level, and successful management. The timely identification of any suspicious clinical symptomatology is urgent in achieving an accurate, staged histological diagnosis, in order to follow up with [...] Read more.
Malignant mediastinal tumors are a group representing some of the most demanding oncological challenges for early, multi-level, and successful management. The timely identification of any suspicious clinical symptomatology is urgent in achieving an accurate, staged histological diagnosis, in order to follow up with an equally detailed medical therapeutic plan (interventional or not) and determine the principal goals regarding efficient overall treatment in these patients. We report a case of a 24-year-old male patient with an incident-free prior medical history. An initial chest X-ray was performed after the patient reported short-term, consistent moderate chest pain symptomatology, early work fatigue, and shortness of breath. The following imaging procedures (chest CT, PET-CT) indicated the presence of an anterior mediastinal mass (meas. ~11 cm × 10 cm × 13 cm, SUV: 8.7), applying additional pressure upon both right heart chambers. The Alpha-Fetoprotein (aFP) blood levels had exceeded at least 50 times their normal range. Two consecutive diagnostic attempts with non-specific histological results, a negative-for-malignancy fine-needle aspiration biopsy (FNA-biopsy), and an additional tumor biopsy, performed via mini anterior (R) thoracotomy with “suspicious” cellular gatherings, were performed elsewhere. After admission to our department, an (R) Video-Assisted Thoracic Surgery (VATS) was performed, along with multiple tumor biopsies and moderate pleural effusion drainage. The tumor’s measurements had increased to DMax: 16 cm × 9 cm × 13 cm, with a severe degree of atelectasis of the Right Lower Lobe parenchyma (RLL) and a pressure-displacement effect upon the Superior Vena Cava (SVC) and the (R) heart sinus, based on data from the preoperative chest MRA. The histological report indicated elements of a combined, non-seminomatous germ-cell mediastinal tumor, posthuberal-type teratoma, and embryonal carcinoma. The imminent chemotherapeutic plan included a “BEP” (Bleomycin®/Cisplatin®/Etoposide®) scheme, which needed to be modified to a “VIP” (Cisplatin®/Etoposide®/Ifosfamide®) scheme, due to an acute pulmonary embolism incident. While the aFP blood levels declined, even reaching normal measurements, the tumor’s size continued to increase significantly (DMax: 28 cm × 25 cm × 13 cm), with severe localized pressure effects, rapid weight loss, and a progressively worsening clinical status. Thus, an emergency surgical intervention took place via median sternotomy, extended with a complementary “T-Shaped” mini anterior (R) thoracotomy. A large, approx. 4 Kg mediastinal tumor was extracted, with additional RML and RUL “en-bloc” segmentectomy and partial mediastinal pleura decortication. The following histological results, apart from verifying the already-known posthuberal-type teratoma, indicated additional scattered small lesions of combined high-grade rabdomyosarcoma, chondrosarcoma, and osteosarcoma, as well as numerous high-grade glioblastoma cellular gatherings. No visible findings of the previously discovered non-seminomatous germ-cell and embryonal carcinoma elements were found. The patient’s postoperative status progressively improved, allowing therapeutic management to continue with six “TIP” (Cisplatin®/Paclitaxel®/Ifosfamide®) sessions, currently under his regular “follow-up” from the oncological team. This report underlines the importance of early, accurate histological identification, combined with any necessary surgical intervention, diagnostic or therapeutic, as well as the appliance of any subsequent multimodality management plan. The diversity of mediastinal tumors, especially for young patients, leaves no place for complacency. Such rare examples may manifest, with equivalent, unpredictable evolution, obliging clinical physicians to stay constantly alert and not take anything for granted. Full article
(This article belongs to the Section Thoracic Oncology)
Show Figures

Graphical abstract

9 pages, 420 KiB  
Article
Comparative Effectiveness of Dalerpen vs. Branded and Other Generic Tadalafil: The “Shift Study”
by Davide Arcaniolo, Carlos Miacola, Marco Bitelli, Luca Boeri, Tommaso Cai, Carlo Ceruti, Celeste Manfredi, Ilaria Ortensi, Fabrizio Palumbo, Giorgio Piubello, Chiara Polito, Nicolò Schifano and Alessandro Palmieri
Uro 2025, 5(3), 14; https://doi.org/10.3390/uro5030014 - 28 Jul 2025
Viewed by 448
Abstract
Background: Phosphodiesterase type 5 inhibitors (PDE5i), particularly tadalafil and sildenafil, are the first-line therapies for erectile dysfunction (ED). After the patent expiration of branded tadalafil in 2017, generic formulations became available. Despite equivalent efficacy, skepticism persists regarding the effectiveness and safety of generics. [...] Read more.
Background: Phosphodiesterase type 5 inhibitors (PDE5i), particularly tadalafil and sildenafil, are the first-line therapies for erectile dysfunction (ED). After the patent expiration of branded tadalafil in 2017, generic formulations became available. Despite equivalent efficacy, skepticism persists regarding the effectiveness and safety of generics. The SHIFT study aimed to evaluate the non-inferiority of a generic tadalafil (Dalerpen) compared with branded and other generic tadalafil in terms of clinical efficacy and patient satisfaction. Methods: A prospective, multicenter study was conducted involving 247 patients treated with tadalafil (either 5 mg or 20 mg) for ED. Patients switched from branded or other generic tadalafil to Dalerpen. Baseline and follow-up assessments included the International Index of Erectile Function—Erectile Function Domain (IIEF-EF) (primary endpoint), Sexual Encounter Profile (SEP-2 and SEP-3), and International Prostatic Symptom Score (IPSS). A one-month follow-up was performed. Results: A total of 247 patients were included in the final analysis. After switching to Dalerpen, significant improvements were observed in both IIEF-EF (18.8 ± 5.6 vs. 16.7 ± 5.4, p < 0.001) and IPSS scores (10.4 ± 6.7 vs. 11.2 ± 6.3, p < 0.001), though the minimal clinically important difference (MCID) was not reached. SEP-3 scores also significantly increased (3 ± 1.2 vs. 2 ± 1.1, p < 0.001). Multivariate analysis identified baseline IIEF, IPSS scores, and post-treatment IPSS as predictors of IIEF-EF improvement (p < 0.001). Switching to Dalerpen was an independent predictor of both IIEF-EF and IPSS improvement. No new adverse events were reported. Conclusions: The SHIFT study demonstrates that Dalerpen is non-inferior to branded tadalafil in terms of clinical efficacy, offering a reliable and cost-effective therapeutic option. Educating patients on bioequivalence and addressing concerns regarding generic drugs are essential to facilitate therapeutic switches. Full article
Show Figures

Figure 1

22 pages, 1071 KiB  
Article
Proximate Composition, Phytochemicals, Phenolic Compounds, and Bioactive Characterization of Mauritia flexuosa L.f. Seeds
by Claudia Cristina Pérez Jaramillo, Liceth N. Cuéllar Álvarez and Walter Murillo Arango
Plants 2025, 14(15), 2323; https://doi.org/10.3390/plants14152323 - 27 Jul 2025
Viewed by 703
Abstract
Mauritia flexuosa, commonly known as “canangucha,” holds significant nutritional and economic value in the Amazon region. While its pulp is widely utilized in local food products, the seed or kernel is largely underutilized. This study investigated the proximal and phytochemical composition of [...] Read more.
Mauritia flexuosa, commonly known as “canangucha,” holds significant nutritional and economic value in the Amazon region. While its pulp is widely utilized in local food products, the seed or kernel is largely underutilized. This study investigated the proximal and phytochemical composition of M. flexuosa, alongside its biological properties, specifically focusing on the hypoglycemic activity of an ethanolic extract from M. flexuosa seeds (MFSs). Proximal analysis revealed that MFSs are a notable source of crude fiber (28.4%) and a moderate source of protein (9.1%). Phytochemical screening indicated a high total polyphenol content (123.4 mg gallic acid equivalents/100 mg dry weight) and substantial antiradical capacity against the ABTS radical (IC50 = 171.86 µg/mL). Notably, MFS ethanolic extracts exhibited significant in vitro antihyperglycemic activity via inhibiting α-amylase and α-glucosidase enzymes, demonstrating comparable inhibition to acarbose at higher concentrations. This hypoglycemic effect was further corroborated in an in vivo rat model with induced diabetes, where the administration of 100 mg/kg of MFS ethanolic extract significantly reduced blood glucose levels compared to the diabetic control group (p < 0.05). A moderate antihypertensive effect was observed at a concentration of 150 mg/kg, correlating with ACE inhibition. High-performance liquid chromatography–mass spectrometry (UHPLC-ESI-HRMS) analysis of the seed extract identified phenolic compounds including ellagic, p-coumaric, and chlorogenic acids, as well as flavonoids such as quercetin, myricetin, and epicatechin. This study provides the first evidence of the hypoglycemic activity of MFSs, offering valuable insights into their phytochemistry and potential therapeutic applications. Full article
Show Figures

Graphical abstract

13 pages, 342 KiB  
Review
The Role of Venous Blood Gas Analysis in Critical Care: A Narrative Review
by Dario Giani, Michele Cosimo Santoro, Maurizio Gabrielli, Roberta Di Luca, Martina Malaspina, Maria Lumare, Licia Antonella Scatà, Martina Pala, Alberto Manno, Marcello Candelli, Marcello Covino, Antonio Gasbarrini and Francesco Franceschi
Medicina 2025, 61(8), 1337; https://doi.org/10.3390/medicina61081337 - 24 Jul 2025
Viewed by 350
Abstract
ABG analysis is the gold standard for assessing acid–base balance, oxygenation, and ventilation in critically ill patients, but it is invasive and associated with patient discomfort and potential complications. Venous blood gas (VBG) analysis offers a less invasive alternative, although its clinical utility [...] Read more.
ABG analysis is the gold standard for assessing acid–base balance, oxygenation, and ventilation in critically ill patients, but it is invasive and associated with patient discomfort and potential complications. Venous blood gas (VBG) analysis offers a less invasive alternative, although its clinical utility remains debated. This review evaluates the current evidence on VBG analysis, exploring its correlation with ABG, clinical applications, and limitations. Studies show a strong correlation between ABG and VBG for pH and a good correlation for bicarbonate and base excess in most cases, while the correlation for pCO2 remains controversial. Predictably, pO2 values differ significantly due to oxygen consumption gradients between the arterial and venous blood. VBG analysis is especially valuable for initial assessments, monitoring therapeutic responses, and guiding resuscitation in intensive care settings. It is not merely an alternative to ABG but a complementary tool that can provide unique insights, such as mixed venous oxygen saturation (SvO2) or indices that require combined ABG and VBG data, like the pCO2 gap. This review highlights the diagnostic equivalence of VBG in appropriate contexts and advocates for its use when arterial sampling is unnecessary or impractical. Furthermore, VBG analysis could enhance patient care by enabling the timely, less invasive assessment of hemodynamic and metabolic conditions. Future research should focus on refining interpretation algorithms and expanding the clinical applications of VBG to fully realize its potential in critical care practice. Full article
(This article belongs to the Section Intensive Care/ Anesthesiology)
17 pages, 363 KiB  
Systematic Review
Efficacy of GS-441524 for Feline Infectious Peritonitis: A Systematic Review (2018–2024)
by Emma Gokalsing, Joana Ferrolho, Mark S. Gibson, Hugo Vilhena and Sofia Anastácio
Pathogens 2025, 14(7), 717; https://doi.org/10.3390/pathogens14070717 - 19 Jul 2025
Viewed by 1021
Abstract
Feline infectious peritonitis (FIP) is a severe viral disease with a very high fatality rate. GS-441524 is an adenosine analogue that acts as an antiviral and has shown promise in FIP treatment. However, its commercialization in some regions is not yet authorized. To [...] Read more.
Feline infectious peritonitis (FIP) is a severe viral disease with a very high fatality rate. GS-441524 is an adenosine analogue that acts as an antiviral and has shown promise in FIP treatment. However, its commercialization in some regions is not yet authorized. To evaluate the efficacy of GS-441524 based on the published literature, a systematic review was conducted. This systematic review was conducted using PubMed, ScienceDirect, and Google Scholar for studies published from 2018 onwards. Following PRISMA guidelines, 11 studies (totaling 650 FIP cases treated with GS-441524 alone or in combination) were included. Therapeutic efficacy was assessed by FIP form, clinical signs, and dosage. The overall treatment success rate was 84.6%. This rate was higher when GS-441524 was combined with other antivirals and lower in cases of wet FIP or those with neurological complications. Combination therapy with other antivirals may improve outcomes in complicated FIP cases, although further studies are needed. The GS-441524 dosages associated with the best outcomes were 5–10 mg/kg once daily (or equivalent subcutaneous dose), adjusted for FIP type, severity, and presence of neurological/ocular signs. Higher dosages can be used for severe cases or to prevent relapse, but splitting into twice-daily dosing may be necessary to avoid absorption issues. In summary, this synthesis indicates that GS-441524 is a highly promising treatment for FIP, with a high success rate among treated cases. Nevertheless, randomized controlled trials are needed to establish evidence-based therapeutic protocols tailored to different FIP presentations. Full article
Show Figures

Figure 1

16 pages, 2412 KiB  
Article
Dynamic Network Driver Analysis Identifies Master Factors Associated with Progression of Solar Lentigines
by Deyu Cai, Hong Zhang, Chengming Zhang, Xue Xiao, Xiao Cui, Xuelan Gu and Luonan Chen
Biology 2025, 14(7), 876; https://doi.org/10.3390/biology14070876 - 17 Jul 2025
Viewed by 351
Abstract
Solar lentigines, commonly caused by prolonged ultraviolet exposure, raise the risk of skin disorders and remain challenging to manage due to their complex mechanisms. Understanding the molecular mechanisms driving the progression of solar lentigines is crucial for developing effective protective strategies. In this [...] Read more.
Solar lentigines, commonly caused by prolonged ultraviolet exposure, raise the risk of skin disorders and remain challenging to manage due to their complex mechanisms. Understanding the molecular mechanisms driving the progression of solar lentigines is crucial for developing effective protective strategies. In this study, we introduced a novel method, Dynamic Network Driver (DND), which identifies upstream regulators that drive disease progression by integrating the Dynamic Network Biomarker (DNB) approach with network control theory. By applying DND to multi-omics data from solar lentigines subjects, we (1) identified the key drivers associated with solar lentigo progression, with their functions involved in differentiation and dermal–epidermal junction; and (2) highlighted ARNT2 and TBX2 as significant master factors supported by in vitro validation in melanocytes and pigmented 3D living skin equivalent models. These results demonstrate the potency of DND for uncovering the molecular mechanisms behind solar lentigines and informing therapeutic strategies. In summary, the DND approach identified novel drivers of solar lentigo progression, acting as new markers for spot mitigation in 3D spot mimic models. Full article
(This article belongs to the Special Issue Physiology and Pathophysiology of Skin)
Show Figures

Figure 1

15 pages, 395 KiB  
Article
Empower-Grief for Relatives of Cancer Patients: Implementation and Findings from an Exploratory Randomized Controlled Trial
by David Dias Neto, Alexandra Coelho, Ana Nunes da Silva, Teresa Garcia Marques and Sara Albuquerque
Behav. Sci. 2025, 15(7), 972; https://doi.org/10.3390/bs15070972 - 17 Jul 2025
Viewed by 749
Abstract
Grief reactions among relatives of palliative care patients are often overlooked, with most interventions targeting Prolonged Grief Disorder (PGD) rather than its prevention. Few interventions have been developed for individuals at risk. This study aimed to evaluate the efficacy of Empower-Grief, a selective [...] Read more.
Grief reactions among relatives of palliative care patients are often overlooked, with most interventions targeting Prolonged Grief Disorder (PGD) rather than its prevention. Few interventions have been developed for individuals at risk. This study aimed to evaluate the efficacy of Empower-Grief, a selective intervention designed to address early problematic grief reactions and to explore predictors of its effectiveness. This exploratory randomized controlled trial (RCT) compared Empower-Grief with Treatment as Usual (TAU) among relatives or caregivers of palliative and oncological patients at risk of developing PGD. A total of 46 participants were assessed at baseline, post-intervention, and six months later. The primary outcome was PGD symptoms, with additional measures including anxiety, depression, coping strategies, attachment style, psychological flexibility, post-traumatic growth, social support, and therapeutic alliance. The final analyses indicate equivalence between Empower-Grief and TAU, suggesting that both interventions yielded comparable outcomes in reducing PGD symptoms and associated psychological distress. The initial symptoms and therapeutic alliance were predictors of the results in both post- and follow-up moments. This study contributes to the evidence on grief interventions in palliative care, highlighting the importance of structured support for bereaved caregivers. While Empower-Grief demonstrated comparable effectiveness to TAU, its lower intensity, ease of training, and application make it a promising treatment option. Full article
(This article belongs to the Special Issue Advances in Clinical Interventions on Grief)
Show Figures

Figure 1

17 pages, 1667 KiB  
Article
C-Terminal Analogues of Camostat Retain TMPRSS2 Protease Inhibition: New Synthetic Directions for Antiviral Repurposing of Guanidinium-Based Drugs in Respiratory Infections
by Bill T. Ferrara, Elinor P. Thompson, Giovanni N. Roviello and Thomas F. Gale
Int. J. Mol. Sci. 2025, 26(14), 6761; https://doi.org/10.3390/ijms26146761 - 15 Jul 2025
Viewed by 333
Abstract
The recent global coronavirus pandemic highlighted the ever-present threat of respiratory virus outbreaks and the consequent need for ongoing research into antiviral therapy. To this end, structural analogues of the guanidinium-based drug camostat mesylate have been synthesised to probe their potential inhibition of [...] Read more.
The recent global coronavirus pandemic highlighted the ever-present threat of respiratory virus outbreaks and the consequent need for ongoing research into antiviral therapy. To this end, structural analogues of the guanidinium-based drug camostat mesylate have been synthesised to probe their potential inhibition of Transmembrane Serine Protease 2 (TMPRSS2), a human protease that is essential for infection by many respiratory viruses, including Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2). Our in vitro fluorescence-based protease assays and supporting computational docking studies suggest that C-terminal camostat analogues retain TMPRSS2 inhibition potencies (IC50 = 1–3 nM, BE = −6.6 to −7.0 kcal/mol) that match or exceed that of the parent drug. Analogues 1c and 1d emerge as lead candidates in this regard, thereby validating the rationale behind C-terminal structural modifications and highlighting these derivatives as promising scaffolds for the future development of targeted antiviral therapeutics. Replacement of camostat’s ester functionality with peptide linkages largely preserves non-covalent binding but disrupts in vitro protease inhibition, findings consistent with the parent drug’s known role as an acylating suicide inhibitor. Docking studies confirm that the replacement of aromatic residues with flexible, equivalent-length alkyl chains is detrimental to drug binding. These function and binding data offer new directions for the synthesis of further analogues of camostat and of other guanidinium-based protease inhibitors that have yet to be refined via structure–activity relationship studies. Further investigation will support tailoring this class of drugs for repurposing in antiviral therapy. Full article
(This article belongs to the Special Issue Novel Antivirals against Respiratory Viruses)
Show Figures

Figure 1

12 pages, 226 KiB  
Article
Degree of Hypoxia and Physiological Differences Between Fast and Slow Ascents to Very High Altitude
by Clive Kelly, Shireen Saxena and Kieran Kelly
Oxygen 2025, 5(3), 13; https://doi.org/10.3390/oxygen5030013 - 8 Jul 2025
Viewed by 354
Abstract
Introduction: Rapid ascent to altitudes of over 5000 m above sea level are associated with dramatic changes in adaptive physiology. The effects of a gradual ascent on symptoms, oximetry, and heart rate are described and compared with the effects of a rapid [...] Read more.
Introduction: Rapid ascent to altitudes of over 5000 m above sea level are associated with dramatic changes in adaptive physiology. The effects of a gradual ascent on symptoms, oximetry, and heart rate are described and compared with the effects of a rapid ascent to the same altitude by a comparable cohort. Methods: A group of 13 individuals (six females) representing 10 countries from five continents ascended gradually from Lukla (2300 m) to Everest Base Camp (5300 m) in Nepal over an 8-day period, then descended over a further 4 days. All symptoms and medication were recorded, along with pulse oximetry (SpO2) and heart rate (HR) every 500 m of ascent. The results were then compared with those obtained at equivalent altitudes using similar methodology from a fast ascent of Mount Kilimanjaro to an equivalent altitude by a comparable cohort over 4 days. Results: The gradual ascent group had a median age of 33 years (range 25–66), and all successfully completed the trek. No severe headache, vomiting, orthopnoea, or productive cough occurred, although minor nausea and mild headache were common. Baseline oximetry fell from a median of 96% (93–97%) to a median of 78% (53–86%) at 8 days but recovered to 94% (89–99%) inside 4 days. Corresponding HR rose from a baseline median of 72 bpm (57–85) to a median of 103 bpm (78–115) at 8 days, then recovered to 80 bpm (54–94) after 4 days. Neither age nor gender correlated with outcomes. Individually, HR correlated inversely with oximetry, but there was no group correlation between these two variables. By contrast, a more rapid 4-day ascent from the same starting height, with similar baseline values for HR and oximetry, to the same final altitude was associated with more severe headache, breathlessness, and vomiting. Fast ascent was associated with a significantly more marked reduction in oximetry to a median of 71% (52–76) and an increase in HR to a median of 110 bpm (88–140). The fast ascent group also required significantly more medication, rated their experience as less enjoyable, and had a 100% incidence of acute mountain sickness compared to 0% in the slow ascent group. Discussion: Oxygen desaturation and tachycardia are inevitable consequences of ascending above 5000 m, but the degree to which this occurs can be reduced by slowing ascent times and taking rest days every 1000 m of ascent. This practice is associated with fewer symptoms and greater safety, with less need for either prophylactic or therapeutic medication. Careful consideration should be given to rates of ascent when climbing to altitudes at or above 5000 m. Full article
13 pages, 1483 KiB  
Article
Analytical Validation of an LC-MS/MS Method for Simultaneous Quantification of Multiple Immunosuppressants in Microvolume Whole Blood
by Kenichi Aizawa, Natsuka Kimura, Takahiro Goda, Sho Nishida, Yasunaru Sakuma, Daiki Iwami and Ryozo Nagai
Int. J. Mol. Sci. 2025, 26(13), 6358; https://doi.org/10.3390/ijms26136358 - 1 Jul 2025
Viewed by 469
Abstract
Immunosuppressants are essential for preventing allograft rejection; however, they require therapeutic drug monitoring to maintain efficacy and to prevent severe complications such as opportunistic infections. Calcineurin inhibitors (CIs) are primarily distributed in red blood cells, whereas mycophenolic acid (MPA) and its metabolites are [...] Read more.
Immunosuppressants are essential for preventing allograft rejection; however, they require therapeutic drug monitoring to maintain efficacy and to prevent severe complications such as opportunistic infections. Calcineurin inhibitors (CIs) are primarily distributed in red blood cells, whereas mycophenolic acid (MPA) and its metabolites are found in plasma. These differences necessitate separate analyses for each drug, increasing laboratory workload, analytical complexity, and patient burden. We developed a liquid chromatography–tandem mass spectrometry method for simultaneous quantification of CIs such as tacrolimus (Tac), everolimus (Eve), sirolimus (Sir), cyclosporine A (CycA) and MPA in 2.8-µL whole-blood samples, with a hematocrit-based correction to estimate plasma-equivalent MPA concentrations. Performance of this method was assessed by comparison with conventional immunoassay results using linear regression and Bland–Altman analyses, demonstrating excellent agreement, with strong linearity (R2 > 0.995) at <2 to 35 ng/mL for three CIs, 26.0 to 1866 ng/mL for CycA, and 0.1 to 50 μg/mL for MPA. Furthermore, MPA and tacrolimus concentrations closely aligned with routine clinical results (R2 > 0.900), indicating high accuracy and reproducibility. This new approach may be particularly beneficial for hospitalized patients with limited venous access, pediatric populations, and in remote care settings where frequent blood sampling is challenging because of simultaneous quantification and fewer sample volume requirements. Full article
(This article belongs to the Section Molecular Pharmacology)
Show Figures

Graphical abstract

15 pages, 1296 KiB  
Article
Evolution and Predictors of Right Ventricular Failure in Fontan Patients: A Case-Control Study
by Hannah S. Kim, Ginnie Abarbanell, Kathleen Simpson, Aaron M. Abarbanell, Pirooz Eghtesady, Philip T. Levy and Gautam K. Singh
J. Clin. Med. 2025, 14(13), 4602; https://doi.org/10.3390/jcm14134602 - 29 Jun 2025
Viewed by 336
Abstract
Background: Patients with single right ventricular morphology (SRV) may exhibit impaired function with increased morbidity, mortality, and need for cardiac transplant due to progressive SRV failure after the Fontan procedure. The aim of the study was to longitudinally characterize the cardiac mechanics and [...] Read more.
Background: Patients with single right ventricular morphology (SRV) may exhibit impaired function with increased morbidity, mortality, and need for cardiac transplant due to progressive SRV failure after the Fontan procedure. The aim of the study was to longitudinally characterize the cardiac mechanics and trajectory of disease evolution of SRV failure in Fontan patients. Methods: We performed a case-controlled longitudinal study of 52 patients who underwent extracardiac Fontan palliation for SRV between 1994 and 2015 and compared echocardiographic measures of right ventricular (RV) function, RV-systemic vascular coupling and ventricular remodeling between patients who required heart transplants due to SRV failure (study group, n = 26) and those who did not (control group, n = 26). To define the trajectory, measurements were obtained at four matching time points equivalent in duration from Fontan. Results: RV circumferential shortening function declined in both groups over the time period, but was significantly lower (p < 0.01) in the study group farther from the Fontan. RV-systemic vascular coupling, assessed by systolic time interval measures and RV work, was preserved in the control group, but significantly altered (p < 0.001) in the study group. Relative wall thickness decreased, and the minor/major-axis ratio, as an index of ventricular geometry, increased in the study group, but both remained stable in the control group. Conclusions: This study suggests that positive ventricular remodeling with enhanced circumferential systolic function, and preserved RV-vascular coupling, appear to be adaptive and protective mechanisms against RV failure in Fontan with SRV. These indices of cardiac mechanics may serve as clinically relevant quantifiable markers of disease evolution, and early indicators for therapeutic intervention. Full article
(This article belongs to the Section Cardiology)
Show Figures

Figure 1

Back to TopTop