Evaluation of the bioaccessibility of tetrahydrocurcumin-hyaluronic acid conjugate using in vitro and ex vivo models

2021 ◽  
Author(s):  
Xudong Tang ◽  
Man Zhang ◽  
Hao Zhang ◽  
Yijun Pan ◽  
Qiaoru Dong ◽  
...  
Keyword(s):  
Hyaluronic Acid ◽  
Ex Vivo ◽  
Acid Conjugate

Permeation Enhancement via Thiolation: In Vitro and Ex Vivo Evaluation of Hyaluronic Acid-Cysteine Ethyl Ester

2015 ◽  
Vol 104 (7) ◽  
pp. 2153-2160 ◽  
Author(s):  
Flavia Laffleur ◽  
Julia Psenner ◽  
Wongsakorn Suchaoin
Keyword(s):  
Hyaluronic Acid ◽  
Ethyl Ester ◽  
Ex Vivo ◽  
Permeation Enhancement

scholarly journals Oral Gel Loaded by Fluconazole‒Sesame Oil Nanotransfersomes: Development, Optimization, and Assessment of Antifungal Activity

Pharmaceutics ◽  
2020 ◽  
Vol 13 (1) ◽  
pp. 27
Author(s):  
Hala M. Alkhalidi ◽  
Khaled M. Hosny ◽  
Waleed Y. Rizg
Keyword(s):  
Hyaluronic Acid ◽  
Opportunistic Infections ◽  
Ex Vivo ◽  
Oral Candidiasis ◽  
Local Treatment ◽  
In Vitro Release ◽  
Sesame Oil ◽  
Ulcer Index ◽  
Hyaluronic Acid Hydrogel

Candidiasis is one of the frequently encountered opportunistic infections in the oral cavity and can be found in acute and chronic presentations. The study aimed to develop fluconazole-loaded sesame oil containing nanotransfersomes (FS-NTF) by the thin-layer evaporation technique to improve the local treatment of oral candidiasis. Optimization of the formulation was performed using the Box‒Behnken statistical design to determine the variable parameters that influence the vesicle size, entrapment efficiency, zone of inhibition, and ulcer index. Finally, the formulated FS-NTF was embedded within the hyaluronic acid‒based hydrogel (HA-FS-NTF). The rheological behavior of the optimized HA-FS-NTF was assessed and the thixotropic behavior with the pseudoplastic flow was recorded; this is desirable for an oral application. An in vitro release study revealed the rapid release of fluconazole from the HA-FS-NTF. This was significantly higher when compared with the fluconazole suspension and hyaluronic acid hydrogel containing fluconazole. Correspondingly, the ex vivo permeation was also found to be higher in HA-FS-NTF in sheep buccal mucosa (400 μg/cm2) when compared with the fluconazole suspension (122 μg/cm2) and hyaluronic acid hydrogel (294 μg/cm2). The optimized formulation had an inhibition zone of 14.33 ± 0.76 mm and enhanced antifungal efficacy for the ulcer index (0.67 ± 0.29) in immunocompromised animals with Candida infection; these findings were superior to those of other tested formulations. Hence, it can be summarized that fluconazole can effectively be delivered for the treatment of oral candidiasis when it is entrapped in a nanotransfersome carrier and embedded into cross-linked hyaluronic acid hydrogel.

scholarly journals Proteoglycan Combined with Hyaluronic Acid and Hydrolyzed Collagen Restores the Skin Barrier in Mild Atopic Dermatitis and Dry, Eczema-Prone Skin: A Pilot Study

2021 ◽  
Vol 22 (19) ◽  
pp. 10189
Author(s):  
Young In Lee ◽  
Sang Gyu Lee ◽  
Jemin Kim ◽  
Sooyeon Choi ◽  
Inhee Jung ◽  
...  
Keyword(s):  
Atopic Dermatitis ◽  
Hyaluronic Acid ◽  
Barrier Function ◽  
Ex Vivo ◽  
Therapeutic Option ◽  
Skin Barrier ◽  
Transepidermal Water Loss ◽  
Skin Barrier Function ◽  
Hydrolyzed Collagen

Dry and eczema-prone skin conditions such as atopic dermatitis and xerotic eczema primarily indicate an impaired skin barrier function, which leads to chronic pruritus. Here, we investigated the effects of a novel emollient containing H.ECMTM liposome, which contains a soluble proteoglycan in combination with hydrolyzed collagen and hyaluronic acid. A prospective, single-arm study was conducted on 25 participants with mild atopic dermatitis or dry skin to assess the hydration and anti-inflammatory effect of the novel emollient applied daily over four weeks. All efficacy parameters, including itching severity, transepidermal water loss, and skin hydration, improved significantly after four weeks. The in vitro and ex vivo studies confirmed the restoration of the skin’s barrier function. The study revealed the clinical and laboratory efficacy of H.ECMTM liposome in reducing itching and improving the skin’s barrier integrity. Thus, the use of H.ECMTM liposome can be considered a therapeutic option for dry and eczema-prone skin.

scholarly journals In vitro and ex vivo effect of hyaluronic acid on erythrocyte flow properties

2010 ◽  
Vol 17 (1) ◽  
pp. 8 ◽  
Author(s):  
A Luquita ◽  
L Urli ◽  
MJ Svetaz ◽  
AM Gennaro ◽  
ME Giorgetti ◽  
...  
Keyword(s):  
Hyaluronic Acid ◽  
Ex Vivo ◽  
Flow Properties

scholarly journals Novel Formulation of Eye Drops Containing Choline Salicylate and Hyaluronic Acid: Stability, Permeability, and Cytotoxicity Studies Using Alternative Ex Vivo and In Vitro Models

2021 ◽  
Vol 14 (9) ◽  
pp. 849
Author(s):  
Katarzyna Barbara Wróblewska ◽  
Bartłomiej Milanowski ◽  
Małgorzata Kucińska ◽  
Szymon Plewa ◽  
Jolanta Długaszewska ◽  
...  
Keyword(s):  
Hyaluronic Acid ◽  
Ex Vivo ◽  
In Vitro Models ◽  
Size Exclusion ◽  
Eye Drops ◽  
Microbiological Analysis ◽  
Long Term Storage ◽  
Cytotoxicity Studies ◽  
Anti Inflammatory

This work investigated the potential of a novel formulation of eye drops containing a non-steroidal anti-inflammatory drug—choline salicylate (CS)—and hyaluronic acid (HA). Thus, these drops may exert both anti-inflammatory and regenerative activity. The experiment was conducted through the careful characterization of physicochemical properties, stability, and quality of eye drops. Moreover, microbiological analysis, as well as penetration and cytotoxic studies, were performed. The UV, HPLC-UV, and HPLC-MS/MS methods were used to determine the purity and stability of CS. The penetration rate of CS was assessed using a hydrophilic membrane and ex vivo porcine cornea model. Additionally, the cytotoxic effects were evaluated using the SIRC cell line. The interaction between HA and CS was tested using size-exclusion chromatography and IR spectrophotometry. As a result, HA increased the viscosity of the drops, which prolonged their contact with the ocular surface, thus ensuring more effective penetration of CS into the corneal structure. After long-term storage, an interaction in the pharmaceutical phase between CS and HA was observed. However, this interaction did not affect the viability of rabbit corneal cells. Our findings showed that eye drops with CS and HA, stored at 2–8 °C in light-protected conditions, met the criteria of stability and safety.

scholarly journals Synergy of Hydeal-D® and Hyaluronic Acid for Protecting and Restoring Urothelium: In Vitro Characterization

Pharmaceutics ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 1450
Author(s):  
Marco Ruggeri ◽  
Mauro Pavan ◽  
Matteo Soato ◽  
Susi Panfilo ◽  
Carlo Barbera ◽  
...  
Keyword(s):  
Hyaluronic Acid ◽  
Ex Vivo ◽  
Active Role ◽  
Biological Properties ◽  
Benzyl Ester ◽  
Bladder Pain ◽  
In Vitro Characterization ◽  
Painful Bladder ◽  
Anti Inflammatory

Interstitial cystitis (IC) or painful bladder syndrome is a chronic dysfunction due to an inflammatory condition, characterized by bladder pain and urinary frequency. Currently, no gold standard therapy is available since IC does not respond to conventional ones. Given these premises, the aim of this work was the in vitro characterization of biological properties (mucoadhesion and anti-inflammatory activity) of a commercial product (HydealCyst–HydC) based on hyaluronic acid (HA) and the benzyl ester of HA (Hydeal-D®) intended for bladder instillation to restore and/or protect the urothelial layer of glycosamino glycans (GAGs). The in vitro characterization demonstrated that an interaction product is formed between HA and Hydeal-D® that has a role in the rheological behavior and mucoadhesive properties. HA was identified as a key component to form the mucoadhesive joint, while the interaction of HA with Hydeal-D® improved polysaccharide stability and prolonged the activity ex vivo. Moreover, HydC is cytocompatible with urothelial cells (HTB-4) and possesses an anti-inflammatory effect towards these cells by decreasing the secretion of IL-6 and IL-8, which were both increased in patients with IC, and by increasing the secretion of sulfated GAGs. These two findings, along with the resilience properties of the formulation due to mucoadhesion, suggest the active role of HydC in protecting and restoring urothelium homeostasis.

Effects of the Tibetan herbal preparation PADMA 28 on blood lipids and lipid oxidisability in subjects with mild hypercholesterolaemia

VASA ◽  
2005 ◽  
Vol 34 (1) ◽  
pp. 11-17 ◽  
Author(s):  
Brunner-La Rocca ◽  
Schindler ◽  
Schlumpf ◽  
Saller ◽  
Suter
Keyword(s):  
Endothelial Dysfunction ◽  
Blood Lipids ◽  
Ex Vivo ◽  
Hdl Cholesterol ◽  
Blood Lipid ◽  
Tibetan Medicine ◽  
Double Blind ◽  
Intraarterial Infusion ◽  
Padma 28

Background: Previous studies showed an anti-atherosclerotic effect of PADMA 28, an herbal formula based on Tibetan medicine. As the mechanisms of action are not fully understood, we investigated whether PADMA 28 may lower blood lipids and lipid oxidisability, and affect early endothelial dysfunction. Patients and methods: Sixty otherwise healthy subjects with total cholesterol ≥5.2 mmol/l and < 8.0 mmol/l were randomly assigned to placebo or PADMA 28, 3 x 2 capsules daily, for 4 weeks (double-blind). Blood lipids (total, LDL-, and HDL-cholesterol, triglycerides, Apo-lipoprotein A1 and B) and ex vivo lipid oxidisability were measured before and after treatment. In a subset of 24 subjects, endothelial function was assessed using venous occlusion plethysmography with intraarterial infusion of acetylcholine. Isolated LDL and plasma both untreated and pre-treated with PADMA 28 extract were oxidised by the radical generator AAPH. Conjugated diene formation was measured at 245 nm. Results: Blood lipids did not change during the study in both groups. In contrast to previous reports in mild hypercholesterolaemia, no endothelial dysfunction was seen and, consequently, was not influenced by therapy. Ex vivo blood lipid oxidisability was significantly reduced with PADMA 28 (area under curve: 5.29 ± 1.62 to 4.99 ± 1.46, p = 0.01), and remained unchanged in the placebo group (5.33 ± 1.88 to 5.18 ± 1.78, p > 0.1). This effect persisted one week after cessation of medication. In vitro experiments confirmed the prevention of lipid peroxidation in the presence of PADMA 28 extracts. Persistent protection was also seen for LDL isolated from PADMA 28-pretreated blood after being subjected to rigorous purification. Conclusions: This study suggests that the inhibition of blood lipid oxidisability by PADMA 28 may play a role in its anti-atherosclerotic effect.

The Role of Polyphenols in the Modulation of Plasma Non-Enzymatic Antioxidant Capacity (NEAC)

2012 ◽  
Vol 82 (3) ◽  
pp. 228-232 ◽  
Author(s):  
Mauro Serafini ◽  
Giuseppa Morabito
Keyword(s):  
Antioxidant Capacity ◽  
Dietary Intervention ◽  
Ex Vivo ◽  
The Body ◽  
Dietary Polyphenols ◽  
Enzymatic Antioxidant ◽  
Endogenous Antioxidant

Dietary polyphenols have been shown to scavenge free radicals, modulating cellular redox transcription factors in different in vitro and ex vivo models. Dietary intervention studies have shown that consumption of plant foods modulates plasma Non-Enzymatic Antioxidant Capacity (NEAC), a biomarker of the endogenous antioxidant network, in human subjects. However, the identification of the molecules responsible for this effect are yet to be obtained and evidences of an antioxidant in vivo action of polyphenols are conflicting. There is a clear discrepancy between polyphenols (PP) concentration in body fluids and the extent of increase of plasma NEAC. The low degree of absorption and the extensive metabolism of PP within the body have raised questions about their contribution to the endogenous antioxidant network. This work will discuss the role of polyphenols from galenic preparation, food extracts, and selected dietary sources as modulators of plasma NEAC in humans.

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