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Wyszukujesz frazę "hydrophilic gels" wg kryterium: Temat


Wyświetlanie 1-4 z 4
Tytuł:
Influence of chitosan on the properties of gels protecting of the esophageal mucosa
Autorzy:
Małolepsza-Jarmołowska, Katarzyna
Powiązania:
https://bibliotekanauki.pl/articles/1034174.pdf
Data publikacji:
2019
Wydawca:
Sieć Badawcza Łukasiewicz - Polskie Towarzystwo Chitynowe
Tematy:
anti-inflammatory drugs
esophageal infections.
esophageal mucosa
gastro-esophageal reflux
hydrophilic gels
physiological environment of gastro-esophageal
Opis:
Gastro-esophageal reflux is a term that defines the reverse flow of acid gastric contents into the esophagus. On the other hand, alkaline reflux occurs in the case when alkaline intestinal contents enter the esophagus. The aim of the study was to examine the pharmaceutical properties of gels for the treatment of gastro-esophageal reflux, covering the mucosa, allowing prolonged contact with the esophageal mucosa. Formulations containing the PVP K-30 showed the lowest pH, which is an important feature and can be used in the treatment of advanced alkaline reflux. Gels containing PVP K-90 and chitosan can be used in the treatment of acid reflux. The addition of chitosan significantly increased the dynamic viscosity of the tested gels. The study of the work of adhesion showed the effect of PVP K-30 and PVP K-90 and their concentration on the value of the work of adhesion. The presented studies have shown that it is possible to obtain gels with high adhesion to the esophageal mucous membrane.
Źródło:
Progress on Chemistry and Application of Chitin and its Derivatives; 2019, 24; 135-144
1896-5644
Pojawia się w:
Progress on Chemistry and Application of Chitin and its Derivatives
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of a hydrophilising substance on the viscosity of gynaecological gels containing lactic acid complexed with chitosan
Autorzy:
Małolepsza-Jarmołowska, Katarzyna
Powiązania:
https://bibliotekanauki.pl/articles/1035410.pdf
Data publikacji:
2012
Wydawca:
Sieć Badawcza Łukasiewicz - Polskie Towarzystwo Chitynowe
Tematy:
anti-inflammatory drugs.
calcium alginate
hydrophilic gels
lactic acid complexed with chitosan
thermosensitive polymerpoloxamer 407
vaginal infections
Opis:
Thus ensuring a continuous action of a drug also during daily activity time of a patient is a vital question in gynaecological treatment. The main problem in applied therapies is to maintain the continuity of treatment during 24 hours. The addition of 5-25% glycerol or 1,2-propylene glycol decreases the pH of investigated gels with calcium alginate to 4.20 to 4.88 (1:1) and 3.69 to 4.19 (2:1); 4.29 to 4.88 (1:1) and 3.62 to 4.40 (2:1). The addition of 5-25% glycerol or 1,2-propylene glycol increases the dynamic viscosity gels with calcium alginate from 595.14 to 820.25 for 1:1 and 640.15 to 769.12 for 2:1; 585.40 to 815.56 for 1:1 and 648.52 to 780.10 for 2:1 ratios. Rheological investigations revealed an increase in the dynamic viscosity of preparations containing poloxamer 407 with the addition of calcium alginate and glycerol or 1,2-propylene glycol in comparison to the reference gels.
Źródło:
Progress on Chemistry and Application of Chitin and its Derivatives; 2012, 17; 125-132
1896-5644
Pojawia się w:
Progress on Chemistry and Application of Chitin and its Derivatives
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of a hydrophilizing substance on the properties of thermosensitive hydrophilic gels containing lactic acid complexed with chitosan
Autorzy:
Małolepsza-Jarmołowska, Katarzyna
Powiązania:
https://bibliotekanauki.pl/articles/1035479.pdf
Data publikacji:
2011
Wydawca:
Sieć Badawcza Łukasiewicz - Polskie Towarzystwo Chitynowe
Tematy:
anti-inflammatory drugs.
hydrophilic gels
lactic acid complexed with chitosan
pectin
thermosensitive polymer-poloxamer 407
vaginal infections
Opis:
Commonly applied drug forms tend to leave the vagina when the patient assumes an upright position. Permanent contact of the drug form with the vaginal mucosa during daily activities of the patient is an indispensable condition for 24-hour therapy. This condition may be fulfilled by drug forms with high ability to adhere to vaginal mucosa. The investigations demonstrated that the thermosensitive polymer - poloxamer 407 increases significantly the adhesive properties of hydrophilic gels, but at the same time it increases their pH. The use of pectin resulted in a decrease of the pH. The addition of glycerol or 1,2-propylene glycol caused further decrease of the pH. Rheological investigations demonstrated positive pharmaceutical properties of the investigated preparations. The obtained parameters gels should provide positive application effects. The investigations revealed that it is possible to obtain gels with high adhesion properties to vaginal mucous membrane.
Źródło:
Progress on Chemistry and Application of Chitin and its Derivatives; 2011, 16; 105-110
1896-5644
Pojawia się w:
Progress on Chemistry and Application of Chitin and its Derivatives
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of pectin and chitosan on the properties of gels protecting the oesophageal mucosa
Autorzy:
Małolepsza-Jarmołowska, Katarzyna
Powiązania:
https://bibliotekanauki.pl/articles/2131516.pdf
Data publikacji:
2021
Wydawca:
Sieć Badawcza Łukasiewicz - Polskie Towarzystwo Chitynowe
Tematy:
anti-inflammatory drugs
gastro-oesophageal reflux
hydrophilic gels
oesophageal infections
oesophageal mucosa
physiological environment of gastro-oesophagus
Opis:
Among the diseases of the digestive tract, gastro-oesophageal reflux is one of the most troublesome ailments. It is estimated that in highly developed countries, reflux symptoms occur in about 5%-10% of people every day. It has also been found that about 20% of people experience such symptoms once a week. The incidence of this disease increases with age, regardless of gender. The aim of the study was to investigate the physicochemical properties of gels intended for the protection of the oesophageal mucosa. Preparations containing 3.0% pectin showed the lowest pH. These gels can be used in the treatment of advanced alkaline reflux. The addition of chitosan to all tested gels increased their pH and dynamic viscosity. The texture tests showed the effect of pectin concentration on the adhesion work of the tested gels.
Źródło:
Progress on Chemistry and Application of Chitin and its Derivatives; 2021, 26; 162-169
1896-5644
Pojawia się w:
Progress on Chemistry and Application of Chitin and its Derivatives
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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