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Hormone-sensitive lipase deficiency affects the expression of SR-BI, LDLr, and ABCA1 receptors/transporters involved in cellular cholesterol uptake and efflux and disturbs fertility in mouse testis.

Hormone-sensitive lipase (HSL) hydrolyse acylglycerols, cholesteryl and retinyl esters. HSL is a key lipase in mice testis, as HSL deficiency results in male sterility. The present work study the effects of the deficiency and lack of HSL on the localization and expression of SR-BI, LDLr, and ABCA1 receptors/transporters involved in uptake and efflux of cholesterol in mice testis, to determine the impact of HSL gene dosage on testis morphology, lipid homeostasis and fertility. The results of this work show that the lack of HSL in mice alters testis morphology and spermatogenesis, decreasing spe…

Effects of manufactured soluble dietary fiber from Quercus mongolica on hepatic HMG-CoA reductase and lipoprotein lipase activities in epididymal adipose tissue of rats fed high cholesterol diets.

This study investigated the effect of a manufactured soluble dietary fiber on lipid metabolism in rats fed high cholesterol diets. Soluble dietary fiber was prepared from wood chips of oak (Quercus mongolica). Male Sprague-Dawley rats weighing 100 +/- 10 g were randomly assigned to either a normal diet or five high cholesterol diets containing 1% cholesterol and different fiber supplements. The high cholesterol groups were subdivided into fiber-free diet (FF), 5% pectin (5P), 10% pectin (10P), 5% manufactured soluble dietary fiber (5QM), and 10% manufactured soluble dietary fiber (10QM) groups

Lipoprotein pattern and plasma lipoprotein lipase activities in patients with primary biliary cirrhosis. Relationship with increase of HDL2 fraction in Lp-X-positive and Lp-X-negative subjects.

Plasma lipids, apoprotein A-I and B in serum and in lipoprotein fractions (VLDL + LDL, HDL2, and HDL3) obtained by preparative ultracentrifugation, as well as postheparin lipoprotein lipase activity (H-TGL and LPL) were evaluated in 17 subjects with primary biliary cirrhosis (stage II and III) subdivided into two groups according to the presence or absence of lipoprotein X (Lp-X). A reduction in total lipoprotein lipase activity was observed in both patient groups, compared to controls (P less than 0.01); the hepatic lipoprotein lipase was significantly reduced (P less than 0.01) only in the L…

Evaluation of insulin-like growth factor-1, total thyroxine, feline pancreas-specific lipase and urinary corticoid-to-creatinine ratio in cats with diabetes mellitus in Switzerland and the Netherlands.

Objectives The aim of the study was to evaluate circulating insulin-like growth factor-1 (IGF-1), feline pancreas-specific lipase (fPLI) and total thyroxine (TT4) concentrations and urinary corticoid-to-creatinine ratio (UCCR) as indicators for the prevalence of acromegaly, pancreatitis, hyperthyroidism and hypercortisolism in cats with diabetes mellitus. Methods Blood and urine samples were collected from diabetic cats treated in primary care clinics in Switzerland and the Netherlands. Standardised questionnaires and physical examination forms provided clinical information from owners and vet…

Can Serum Pancreatic Amylase and Lipase Levels Be Used as Diagnostic Markers to Distinguish Between Patients With Mucinous Cystic Lesions of the Pancreas, Chronic Pancreatitis, and Pancreatic Ductal Adenocarcinoma?

OBJECTIVE: This study aimed to assess the presence of pancreatic hyperenzymemia in patients with pancreatic cystic lesions as compared to ot … lesions, in 14 (40.0%) patients with CP, and none in patients with PDAC (P = 0.002); whereas serum lipase activity was abnormally high in 8 (25.0%) patients with mucinous cystic lesion, in 17 (48.6%) patients with CP, and in 3 (12.5%) patients with PDAC (P = 0.009). In 7 patients with mucinous cystic lesions and histologically confirmed severe dysplasia …

Low serum lipase levels in mothers of children with stunted growth indicate the possibility of low calcium absorption during pregnancy: A cross-sectional study in North Sumatra, Indonesia.

Stunting is caused by various factors, including low nutritional intake in the first two years of life. This study aimed to investigate the … aminations, including measurements of calcium, iron, zinc, vitamin D, pancreatic amylase, and serum lipase levels. This study included 50 healthy mothers aged 18-50 years old with children aged 2 to 60 months. There was a significant difference in serum calcium levels between the groups of mothers of children with normal and stunted growth (p = 0.03, mea …

Molecular and clinical characterization of a series of patients with childhood-onset lysosomal acid lipase deficiency. Retrospective investigations, follow-up and detection of two novel LIPA pathogenic variants.

BACKGROUND AND AIMS: Childhood/Adult-onset Lysosomal Acid Lipase Deficiency (LAL-D) is a recessive disorder due to loss of function variants of LAL, the enzyme which hydrolyses cholesteryl esters, derived from internalized apoB containing lipoproteins. The disease is characterized by multi-organ involvement including the liver, spleen, intestine and cardiovascular system. The aim of this study was the clinical and molecular characterization of 14 (13 unrelated) previously unreported patients with childhood-onset LAL-D. METHODS: Data collected included clinical and laboratory investigations, l…

Study of the biochemical and kinetic properties of Candida antarctica lipase immobilized on magnetized poly(styrene-co-ethylene glycol dimethacrylate) and the development of a mathematical model for emollient ester synthesis.

The present study aimed to develop a biocatalyst through the immobilization of Candida antarctica lipase B (CALB) via physical adsorption onto magnetized poly(styrene-co-ethylene glycol dimethacrylate) (STY-EGDMA-M). Biochemical property characterization, apparent kinetic parameter determination, and thermal stability assessment were conducted using a methodology developed based on the hydrolysis of the ester methyl butyrate. The results demonstrated that immobilization expanded the enzyme's optimal pH range, with the best performance observed at pH 7.5 and 8, reaching approximately 730 U g⁻1.…

Lack of association of the apolipoprotein A-I-C-III-A-IV gene XmnI and SstI polymorphisms and of the lipoprotein lipase gene mutations in familial combined hyperlipoproteinemia in French Canadian subjects.

Familial combined hyperlipoproteinemia (FCH) is a common familial lipoprotein disorder characterized by elevated plasma cholesterol and triglyceride levels with segregation in first-degree relatives. Most affected subjects with FCH have elevated plasma levels of apolipoprotein (apo) B. The disorder results from oversecretion of hepatic apoB-containing lipoprotein particles. The genetic defect(s) are unknown. Previous work has suggested that genetic polymorphisms of the apoA-I gene and functional abnormalities of the lipoprotein lipase (LPL) gene are associated with FCH. We investigated the Xmn…

Compounds Contributing to the Modulation of Visceral Adiposity and Hepatic Lipid Metabolism in High-Fat-Diet-Fed Rats by Pometia pinnata (Matoa) Peel Powder: Identification of Pancreatic Lipase Inhibitors.

Background:Pometia pinnata (matoa) peel powder attenuates high-fat diet-induced adiposity and hepatic lipid accumulation in rats, but the responsible compounds remain unclear. This study aimed to identify the bioactive compounds that may contribute to this phenotype, with an emphasis on pancreatic lipase inhibition as a candidate mechanism. Methods: Rats received high-fat diets containing matoa peel powder, or its water- or ethanol extraction residue. Visceral fat accumulation, hepatic lipid deposition, and serum lipid profiles were evaluated. An ethanol extract was fractionated by activity-gu…

Rapidly screening of pancreatic lipase inhibitors from Sibiraea angustata (rehd.) Hand.-Mazz. leaves using affinity ultrafiltration combined with HPLC-QTOFMS, molecular docking, targeted separation, and in vitro experimental verification.

An integrated strategy was proposed for the rapid screening of pancreatic lipase inhibitors from Sibiraea angustata (Rehd.) Hand.-Mazz. (S. angustata) leaves based on affinity ultrafiltration, high-performance liquid chromatography-quadrupole time-of-flight mass spectrometry (HPLC-QTOFMS), molecular docking, targeted separation and in vitro experimental verification. A total of fifteen target compounds, including five flavonoids, one phenylpropanol glycoside and nine terpenoids, had been screened as pancreatic lipase inhibitors from the ethyl acetate and n-butanol fractions of S. angustata lea…

Auto-induction, biochemical characterization and application of a novel thermo-alkaline and detergent-stable lipase (S9 peptidase domain) from Thermotoga petrophila as cleaning additive and degrading oil/fat wastes.

A peptidase S9 prolyl oligopeptidase domain from Thermotoga petrophila RKU-1T (TpS9) was over-expressed as an active, soluble and hyperstable lipolytic enzyme in the mesophilic host system. The sequence analysis demonstrated, TpS9 is an esterase/lipase-like protein belongs to alpha/beta (α/β)-hydrolase superfamily with a well-conserved penta-peptide (GLSAG) motif and α/β-hydrolase fold. Various approaches (induction and cultivation) were employed to enrich TpS9 production, 6.04- and 7.26-fold increment was observed with IPTG (0.4 mM) and lactose (200 mM) in the modified 4ZB medium (pH 7.0), bu…

Effect of Green and Red Thai Kratom (Mitragyna speciosa) on pancreatic digestive enzymes (alpha-glucosidase and lipase) and acetyl-carboxylase 1 activity: A possible therapeutic target for obesity prevention.

Regular use of Thai kratom has been linked to reduced blood triglyceride levels and body mass index (BMI) in healthy individuals. We analyzed Green Thai Kratom (GTK) and Red Thai Kratom (RTK) to investigate their effects on pancreatic digestive enzymes. The ethanol extracts of GTK and RTK inhibited lipase activity more strongly than alpha-glucosidase activity, suggesting the presence of lipase inhibitors. Mitragynine, the major compound in GTK, showed potent lipase inhibition and moderate alpha-glucosidase inhibition. Quercetin, found in both extracts, strongly inhibited alpha-glucosidase but …

Double Dissociation of Monoacylglycerol Lipase Inhibition and CB1 Antagonism in the Central Amygdala, Basolateral Amygdala, and the Interoceptive Insular Cortex on the Affective Properties of Acute Naloxone-Precipitated Morphine Withdrawal in Rats.

Both CB1 receptor antagonism and agonism, in particular by 2-arachidonyl glycerol (2-AG), have been shown to reduce somatic symptoms of morphine withdrawal (MWD). Here we evaluated the effects of both systemic pretreatment with the monoacylglycerol lipase (MAGL) inhibitor MJN110 (which selectively elevates 2-AG) and central administration of both MJN110 and the CB1 antagonist (AM251) on the affective properties of MWD. Acute MWD induced place aversion occurs when naloxone is administered 24 h following a single exposure to a high dose of morphine. Systemic pretreatment with the MAGL inhibitor,…

Phenolic Compounds from Hypericum cerastoides (Spach) N. Robson: Dereplication via UHPLC-HRMS/MS, Isolation, Identification, and Preliminary Biological Evaluation Focusing on Radical-Scavenging, Anti-α-Glucosidase, and Pro-Lipase Activities.

Background/Objectives:Hypericum cerastoides (Spach) N. Robson is a lesser-known species with potential pharmacological importance. This study aimed to profile phenolic compounds in its aerial parts and assess biological activities of isolated constituents, focusing on radical-scavenging, anti-α-glucosidase, and pro-lipase effects. Methods: Phenolic compounds from H. cerastoides aerial parts were dereplicated via UHPLC-HRMS/MS. The structures of isolated compounds were determined using spectroscopic methods (1D and 2D NMR, UV, and HRMS-ESI). Radical-scavenging was evaluated by DPPH and ABTS ass…

A combined in vitro, in vivo and in silico approach for the discovery of bioactive molecules from Corchorus olitorius L as pancreatic lipase inhibitors, interleukin-6 and tumor necrosis factor alpha TNF-α.

This study aimed to evaluate the antioxidant, anti-inflammatory, and anti-obesity effects of bioactive compounds derived from Corchorus olit … eoylquinic acid)-demonstrated strong binding affinities to proinflammatory cytokines and pancreatic lipase. Analog compounds designed via bioisosteric modification retained favorable biological activity. ADME analysis indicated that the principal compounds possess favorable oral absorption properties and align with drug-likeness criteria. Compared to orl …

Lipoprotein lipase and PPAR alpha gene polymorphisms, increased very-low-density lipoprotein levels, and decreased high-density lipoprotein levels as risk markers for the development of visceral leishmaniasis by Leishmania infantum.

In visceral leishmaniasis (VL) endemic areas, a minority of infected individuals progress to disease since most of them develop protective immunity. Therefore, we investigated the risk markers of VL within nonimmune sector. Analyzing infected symptomatic and, asymptomatic, and noninfected individuals, VL patients presented with reduced high-density lipoprotein cholesterol (HDL-C), elevated triacylglycerol (TAG), and elevated very-low-density lipoprotein cholesterol (VLDL-C) levels. A polymorphism analysis of the lipoprotein lipase (LPL) gene using HindIII restriction digestion (N = 156 samples…

Hepatosplenomegalic lipidosis: what unless Gaucher? Adult cholesteryl ester storage disease (CESD) with anemia, mesenteric lipodystrophy, increased plasma chitotriosidase activity and a homozygous lysosomal acid lipase -1 exon 8 splice junction mutation.

A 36-year-old woman was admitted for hepatosplenomegaly and anemia. Bone marrow cytology showed "sea-blue histiocytes", vacuolated macrophag … re than 15-fold accumulation of cholesterol esters within the cells. The activity of lysosomal acid lipase (LAL) in fibroblast homogenates was decreased to 12% of control subjects. Mutational analysis of the patient's blood showed the homozygous G-->A mutation at position -1 of the exon 8 splice donor site (E8SJM-allele) known for adult cholesteryl ester …

The novel compound NO-1886 increases lipoprotein lipase activity with resulting elevation of high density lipoprotein cholesterol, and long-term administration inhibits atherogenesis in the coronary arteries of rats with experimental atherosclerosis.

We have discovered a novel compound, NO-1886, which possesses a powerful lipoprotein lipase (LPL) activity-increasing action. Administration of NO-1886 increased LPL activity in the postheparin plasma, adipose tissue, and myocardium of rats, and produced a reduction in plasma triglyceride levels with concomitant elevation of HDL cholesterol levels. Administration of NO-1886 increased LPL enzyme mass in postheparin plasma and mRNA activity in epididymal adipose tissue, and it was concluded that the mode of action of this compound is stimulation of tissue LPL synthesis. We also conducted long-te…

Гепатическое перевыражение эндотелиального липучего липопротеина, но поддерживает обратный перенос холестерина в мышах: роль скавенджера-рецептора класса В типа I/ATP-Binding Cassete Transporter A1-Dependent Transport.

ЦЕЛЬ: Реверсивный перенос холестерина (RCT) является одним из основных механизмов, с помощью которого HDL (высокоплотный липопротеин) защищает от атеросклероза. Согласно сообщениям, эндотелиальная липаза (ЭЛ) снижает уровни HDL, что в теории приведет к увеличению атеросклероза. Однако остается неясным, влияет ли ЭЛ на РСТ в vivo. ПОДХОДЫ И РЕЗУЛЬТАТЫ: Аденовиральные векторы, выражающие EL или люсиферазу, вводились внутри мышей, и был проведен анализ макрофага РХТ. Как и ожидалось, экспрессия печени ЭЛ заметно снизила уровни HDL. Параллельно с этим плазма 3H-холестерин от мышей, выражающих ЭЛ,

Совпадение в аннотации оригинала
OBJECTIVE: Reverse cholesterol transport (RCT) is a major mechanism by which HDL (high-density lipoprotein) protects against atherosclerosis. Endothelial lipase (EL) reportedly reduces HDL levels, which, in theory, would increase atherosclerosis. However, it remains unclear whether EL affects RCT in vivo. APPROACH AND RESULTS: Adenoviral vectors expressing …