Lipolysis by pancreatic lipase was investigated with the aim to establish an in vitro lipolysis model, which can be used to investigate the dissolution of poorly soluble lipophilic drug substances at controlled hydrolysis rates. The effects of three experimental parameters -- the concentrations of bile salts and Ca(2+) and the lipase activity -- were investigated. The effect on the rate of hydrolysis of emulsified soybean oil was investigated in experiments in a pH-stat at pH 6.5 and 37 degrees C. The free fatty acids produced by the hydrolysis were titrated at pH 6.5. It was shown that all three investigated parameters influence the initial rate of hydrolysis, whereas only the lipase activity and the concentration of Ca(2+) affect the subsequent stages. It was also shown that the rate of lipolysis can be controlled by the rate of adding Ca(2+). Thus, it is possible to design an in vitro model using readily available and inexpensive materials in which the hydrolysis rate can be controlled by the continuous addition of Ca(2+).
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/s0928-0987(01)00169-5 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Shouhui Tongbian Capsule ameliorates obesity by enhancing energy consumption and promoting lipolysis via cAMP-PKA pathway.
Phytomedicine
January 2025
The Second Hospital of Shandong University, Jinan, Shandong, PR China; Advanced Medical Research Institute, Shandong University, Shandong University, Jinan, Shandong, PR China. Electronic address:
Background: The prevalence of obesity and its associated diseases has sharply increased, becoming a global health issue. White adipose tissue (WAT), responsible for lipid storage via hyperplasia and hypertrophy, and brown adipose tissue (BAT), which facilitates energy dissipation, have increasingly been recognized as critical regulators of weight loss. Shouhui Tongbian Capsule (SHTB) has traditionally been used for detoxification, weight loss, and lipid reduction, and clinical evidence supports its use for relieving constipation.
View Article and Find Full Text PDFBioactive Polysaccharides from Cremastra Appendiculata Attenuate Lipid Accumulation In Vitro Model of Non-Alcoholic Fatty Liver Disease.
Chem Biodivers
January 2025
Yangzhou University, Medical College, Rd. No. 136, Middle Jiangyang Rd, 225000, Yangzhou, CHINA.
Non-alcoholic fatty liver disease (NAFLD) is a most common chronic disease with a rapid growing incidence worldwide, presenting as an ever-increasing burden to the healthcare system. In this study, we explored that Cremastraappendiculata, a valuable traditional medicine in China, could alleviate lipid accumulation in HepG2 cells. Polysaccharide (CAP) was extracted from the pseudobulbs of C.
View Article and Find Full Text PDFCAMKIIδ Reinforces Lipid Metabolism and Promotes the Development of B Cell Lymphoma.
Adv Sci (Weinh)
January 2025
Cancer Institute (Key Laboratory of Cancer Prevention and Intervention, China National Ministry of Education), Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310009, China.
The most prevalent types of lymphomas are B cell lymphomas (BCL). Newer therapies for BCL have improved the prognosis for many patients. However, approximately 30% with aggressive BCL either remain refractory or ultimately relapse.
View Article and Find Full Text PDFQuantifying intestinal lipolysis with MRI and TD-NMR: Proof of concept using dairy cream digested in vitro.
Food Chem
December 2024
INRAE, OPAALE, 35044 Rennes, France. Electronic address:
Understanding lipid digestion is crucial for promoting human health. Traditional methods for studying lipolysis face challenges in sample representativeness and pre-treatment, and cannot measure real-time lipolysis in vivo. Thus, non-invasive techniques like magnetic resonance imaging (MRI) need to be developed.
View Article and Find Full Text PDFLipid droplet targeting of the lipase co-activator ABHD5 and the fatty liver disease-causing variant PNPLA3 I148M is required to promote liver steatosis.
J Biol Chem
January 2025
Hypertension and Vascular Research Division, Department of Internal Medicine, Henry Ford Hospital, Detroit, MI, 48202; Department of Physiology, Wayne State University School of Medicine, Detroit, MI, USA 48202. Electronic address:
The storage and release of triacylglycerol (TAG) in lipid droplets (LDs) is regulated by dynamic protein interactions. α/β hydrolase domain-containing protein 5 (ABHD5; also known as CGI-58) is a membrane/LD bound protein that functions as a co-activator of Patatin Like Phospholipase Domain Containing 2 (PNPLA2; also known as Adipose triglyceride lipase, ATGL) the rate-limiting enzyme for TAG hydrolysis. The dysregulation of TAG hydrolysis is involved in various metabolic diseases such as metabolic dysfunction-associated steatotic liver disease (MASLD).
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!