Association between LIPC gene rs10468017 polymorphism and the susceptibility to age-related macular degeneration: a Meta-analysis / 中华实验眼科杂志

Objective:To systematically evaluate the association between the hepatic lipase ( LIPC) gene rs10468017 polymorphism and susceptibility to age-related macular degeneration (AMD). Methods:A systematic search was performed in both English databases (PubMed, Embase, EBSCO, Web of Knowledge and Cochrane library) and Chinese databases (CNKI, WanFang, VIP and CBM) from database establishment to December 31, 2019.Literature about LIPC rs10468017 polymorphism and AMD was searched.Odds ratios ( OR) and 95% confidence intervals ( CI) of allele mode (T and C), heterozygous model (TC and CC) and homozygous model (TT and CC) as well as the correlation between types of AMD and races were calculated using Stata 12.0 software. Results:Twenty-one studies were included in the Meta-analysis.There were 25 649 AMD patients and 26 294 normal controls.There was a significant correlation between LIPC rs10468017 polymorphism and risk of AMD in different genetic models (T vs. C: OR=0.83, 95% CI: 0.80-0.87; TC vs. CC: OR=0.82, 95% CI: 0.75-0.90; TT vs. CC: OR=0.65, 95% CI: 0.56-0.76). The subgroup analysis showed that the LIPC rs10468017 polymorphism was significantly associated with the risk of early AMD ( OR=0.87, 95% CI: 0.78-0.96), advanced AMD ( OR=0.83, 95% CI: 0.77-0.88), geographic atrophy ( OR=0.79, 95% CI: 0.72-0.87) and choroidal neovascularization ( OR=0.83, 95% CI: 0.78-0.89). Stratified analysis by ethnicity showed that there was a significant association between T allele and the decreased risk of AMD in the Caucasian population (early AMD: OR=0.77, 95% CI: 0.67-0.89; advanced AMD: OR=0.80, 95% CI: 0.75-0.87), but not in the Asian population (early AMD: OR=0.98, 95% CI: 0.85-1.13; advanced AMD: OR=0.93, 95% CI: 0.81-1.06). Conclusions:There is a significant association between T allele of LIPC rs10468017 polymorphism and the reduced risk of AMD, which exists in different subtypes of AMD with certain racial differences.

Signatures of positive selection on the hepatic lipase gene in human populations

The hepatic lipase plays a central role in the lipid metabolism, catalyzing the hydrolysis of phospholipids, monoglycerides, diglycerides, and triglycerides, and acyl-CoA. It is also implied in the conversion of very low-density lipoprotein and intermediate density lipoprotein to low density lipoproteins. As a consequence, the gene encoding the hepatic lipase (LIPC) is associated with several diseases derived from the imbalance of lipids that are in general derived from the interaction between life styles and genetic architecture. Therefore, it is interesting to understand more about the characteristics of the microevolutionary processes affecting genes that, like LIPC, have a role in nutrition and lipid metabolism in human populations. We explored the selection signatures on LIPC in 26 populations, detecting three regions under recent positive selection

Hepatic Lipase Influences Plasma Lipid Profiles and Lipoprotein Ratios in Regional Hospital Patients with Ischemic Stroke

Background: Stroke is the second most common cause of death and disability in developed Countries. Ischemic stroke is the most common, with an estimated incidence of approximately 80%.Studies have shown that dyslipidemia, including high levels of plasma or serum total cholesterol (TC), triglycerides (TG), low density lipoprotein-cholesterol (LDL-C) and apolipoprotein B (ApoB) and low levels of high density lipoprotein-cholesterol (HDL-C) is a risk factor for the progression of atherosclerosis and the development of cardiovascular disease. Attempts are being made to include the use of lipoprotein ratios to optimize the predictive capacity of lipid profile in risk evaluation.Objective: The objective of the present study is to evaluate the effect of hepatic lipase activity on lipid profiles and lipoprotein ratios in ischemic stroke patients.Methodology: Two hundred healthy and ischemic stroke subjects were recruited in the study after obtaining informed written consent. They were divided into six groups considering age classes. Group 1-3 were control subjects (n=100) and 4-6 were ischemic stroke subjects (n=100). Weight, height, hepatic lipase activity and plasma lipid profiles were measured and lipoprotein ratios calculated using Excel software. Statistical analyses were performed using GraphPad prism computer software version 5.00 and SPSS version 22 software programme.Results: Hepatic lipase activity in the stroke subjects was significantly (P<0.0001) lower than control subjects (P=0.0001, 20.21 ± 0.3706 µmol/h/ml vs 30.50 ± 0.3928 µmol/h/ml). The stroke subjects had significantly (P<0.05) higher SBP, DBP and BMI compared to the control. Abnormal plasma lipid parameters were obtained in the stroke subjects compared to the control subjects. The stroke subjects had significant (P<0.0001) elevated TC, TG, LDL-C, VLDL-C, Non- HDL-C, CRI-I, CRI-II, AC, TG/HDL-C and AIP as well as lower HDL-C and HDL-C/LDL-C. LDL-C/HDL-C ratio (0R=490488439.6, 95% CI=0.078 - 3.102E+18 P=0.000) is the major risk factor for the development of ischemic stroke.Conclusion: Hepatic lipase activities were lower while higher BP, BMI and dyslipidemia were obtained in the ischemic stroke subjects

Efeito da administração In Bolus da heparina sódica no remodelamento de partículas lepoprotéicas associadas ao transporte reverso do colesterol / In bolus administration the effect of heparin sodium in remodeling lepoprotéicas particles associated with reverse cholesterol transport

Introdução: as doenças cardiovasculares acometem milhares de pessoas no mundo. Destas, a doença arterosclerótica está entre as de maior morbimortalidade. Para a avaliação da necessidade de intervenções hemodinâmicas e/ou revascularização miocárdica, há a necessidade da realização do cateterismo (CATE), procedimento de imagem indicado para evidenciar pontos de obstrução e determinar a melhor estratégia cirúrgica. Para a realização do CATE utiliza-se heparina sódica (5000 UI) in bolus. Atualmente, sabe-se que a heparina interfere no remodelamento de partículas lipoproteicas por liberação da lipoproteína lipase (LPL) e da lipase hepática (LH), essa ação pode alterar o transporte reverso do colesterol (TRC), em função de modificações no metabolismo das lipoproteínas. Métodos: foram selecionados por conveniência 20 pacientes, 10 do sexo masculino e 10 do sexo feminino, ambos os sexos, entre 45 e 73 anos, admitidos no Hospital Ana Neri, submetidos à cineangiocoronariografia (CATE)...

Introduction: cardiovascular diseases affect thousands of people worldwide. Of these, the atherosclerotic disease is one of the most morbidity and mortality. To evaluate the need for hemodynamic interventions and / or CABG, the catheterization (CATE) is performed, an imaging procedure to evidence obstruction and to determine the best surgical strategy. To perform CATE, is necessary to use in bolus sodium heparin (5000 IU). Currently, it is known that heparin interferes with the remodeling of the lipoprotein particles by releasing lipoprotein lipase (LPL) and hepatic lipase (HL), this action may alter the reverse cholesterol transport (TRC), by changes in lipoprotein metabolism. Methods: were selected by convenience 20 patients, 10 male and 10 female, both gender, between 45 and 73 years old, admitted to the Hospital Ana Neri, who underwent coronary angiography (CATE)...

Early Carotid Atherosclerosis and Hepatic Lipase-514 C/T Polymorphism: A Study in Hyperalphalipoproteinemic Individuals / Aterosclerosis carotídea subclínica y el polimorfsmo HL-514 C/T de la lipasa hepática: un estudio en individuos hiperalfalipoproteinémicos

Objective: Hepatic lipase (HL) is involved in the metabolism of several lipoproteins and has a key role in reverse cholesterol transport and atherosclerosis. The aim of this study was to evaluate the effects of HL -514C/T polymorphism on sub-clinical and established carotid atherosclerotic in hyperalphalipoproteinemic and control individuals. Methods: One hundred and sixty nine asymptomatic individuals (aged 47 ± 16 years), 71 hyperalphalipopro-teinemic (Hyper-A, HDL-C = 68mg/dL) and 98 controls (CTL, HDL-C< 68mg/dL) were selected by clinical and laboratory evaluations. Lipids and lipoproteins were measured by enzymatic methods. HL activity was measured in post-heparin plasma by a radiometric assay and HL-514C/T genotypes were analyzed by PCR. Carotid intima-media thickness (cIMT) was measured by Doppler ultrasonography. Results: No differences in HL -514C/T genotype frequencies were observed between the groups. HL -514C/T polymorphism did not contribute to variations in cIMT or atherosclerotic lesion frequencies in Hyper-A and controls. Furthermore, no interactions between HL-514C/T polymorphism and cIMT or atherosclerotic lesions were found. Conclusions: In hyperalphalipoproteinemic individuals the -514C/T polymorphism is not associated with significant variations in HDL-Cholesterol concentrations. Besides, it has no repercussions on carotid atherosclerosis, although hepatic lipase activity is significantly reduced. No financial conflicts of interest exist.

Objetivo: La Lipasa Hepática (HL) está implicada en el metabolismo de las lipoproteínas distintas y desempeña un papel en el transporte inverso del colesterol y la aterosclerosis. El objetivo de este estudio fue evaluar los efectos del polimorfismo HL-514 C/T en la aterosclerosis carotídea subclínica en los individuos e hiperalfalipoproteinémicos y controles establecidos. Métodos: Ciento sesenta y nueve sujetos asintomáticos (edad 47 ± 16 años), 71 hiperalfalipoproteinémicos (Hyper-A, HDL-C = 68mg/dL) y 98 controles (CTL, HDL-C <68mg/dL) fueron seleccionados por evaluaciones clínicas y de laboratorio. Lípidos y lipoproteínas se midieron por métodos enzimáticos. La actividad de la HL se midió en plasma después de la heparina por el método radiométrico, y los genotipos HL-514C/T se analizaron por PCR. El Grosor íntimo-medial carotídeo (cIMT) se midió mediante ecografía. Resultados: No hubo diferencias en las frecuencias de los genotipos HL-514 C/T se observó entre los grupos. Polimorfismo HL-514 C/T no ha contribuido a los cambios en cIMT o la frecuencia de las lesiones ateroscleróticas en Hyper-A y los controles. Por otra parte, no hay interacción entre el polimorfismo HL-514 C/T y cIMT ni fueron halladas lesiones ateroscleróticas. Conclusiones: El polimorfismo HL -514 C/T no está asociado con cambios significativos en el colesterol HDL en hiperalfalipoproteinémicos particulares y no tiene efecto en la arteriosclerosis carotídea a pesar de que la actividad de la HL ha sido reducida significativamente. Los autores declaran no poseer conflictos de interés.

Relation between hepatic lipase promoter-514C/T polymorphism and coronary heart disease / 心血管康复医学杂志

Objective: To explore the relation between hepatic lipase (HL) promoter-514C/T polymorphism and coronary heart disease (CHD) in population of this district. Methods: Polymerase chain reaction - restriction fragment length polymorphism (PCR-RFLP) was used to measure HL promoter-514C/T genotypes in 199 CHD patients (CHD group) and 146 non-CHD patients (non-CHD group) in order to explore its influence on blood lipids and apolipoprotein. Results: In male group, there was significant difference in distribution of HL promoter-514C/T genotype between CHD group and non-CHD group (χ2=15.851，P=0.015); but there was no significant difference in female group (χ2=0.249，P=0.969); Compared with LIPC-514-C/T CC male inpatients, there was significant increase in level of high density lipoprotein cholesterol [(34.6±8.9)mg/dl vs. (38.9±10.2)mg/dl, P=0.02] in CT/TT male inpatients. Conclusion: Hepatic lipase promoter-514C/T polymorphism has certain influence on levels of blood lipids in patients with coronary heart disease.

The effect of warm liver ischaemia & reperfusion injury on circulating plasma lipid levels & lipolytic enzyme activity in rat & the impact of ischaemic preconditioning.

Background & objectives: Ischaemia/reperfusion (I/R) associated with major liver surgery compromises liver function. Ischaemic preconditioning (IPC) may be effective in minimizing hepatic I/R injury. This study aimed to investigate the impact of liver ischaemic manipulations on lipid metabolism in rat during the process of liver recovery after liver surgery. Methods: Sixty three male Wistar rats were assigned to three groups: the sham group, the I/R group which underwent warm ischaemia and reperfusion (I/R), and the IPC group. The animals were subdivided in 3 groups [1st, 3rdand 7th postoperative day (PO)]. Hepatic lipase (HL) and total lipase (TL) activity and the levels of aspartate and alanine transaminases (AST, ALT), triglycerides, HDL and cholesterol were measured in plasma. Results: There was no significant difference in the activity of HL and TL between the groups. Significant higher levels of HDL (P<0.0001) were observed in the IPC group when compared to the other groups on the 3rd PO day. Triglycerides (P<0.0001) and HDL (P=0.003) in the IPC group were higher than the sham group on the 7th PO day while HDL was also higher in the I/R group. Significantly higher cholesterol levels were found in the I/R and IPC groups on the 7th PO day, which were not observed in the sham group. There was a similar curve for triglycerides in the sham and IPC groups while there were significantly higher levels of triglycerides on day 7 for the I/R group. The levels of HDL in the IPC group were higher on the 3rd and 7th PO day, compared to day 1. Interpretation & conclusion: Warm ischaemia and I/R injury do not seem to affect lipolytic enzyme activity after the 1st PO day despite the effects on plasma lipids. IPC seems to prevent accumulation of triglycerides and cholesterol in plasma.

Effect of lipases on hyperlipidemic acute necrotizing pancreatitis / 中华胰腺病杂志

Objective To investigate the influence of Lipoprotein lipase (LPL)/Hepatic lipase (HL) on hyperlipidemie acute necrotizing pancreatitis (HLANP) in rats. Methods The rats were fed with hyperlipidemic feed for 4 weeks, then the rats were injected with 5% sodium taurocholate into pancreatic duct to induce HLANP model. Seventy-two rats were randomly assigned to HLANP and control groups, and then each group was subdivided into 6 subgroups (n = 6) at 0, 3, 6, 12, 24 and 48 h. Serum amylase, cholesterol, triglyeride (TG), free fatty acid (FFA) levels and serum LPL, HI. activities were determined. Under the light-microscopy and electron microscopy, the histopathologic and uhrastructure changes of pancreas were observed; the HL mRNA expressions were detected by RT-PCR; HL protein expressions HL were assessed by immunohistoehemical staining. Results The serum amylase levels reached peak values at 12 h after ANP induction in the two groups, the mean values were 7 176U/L and 6 366U/L, which were significantly higher than those of baseline values (P <0.05) ; serum levels of cholesterol in HLANP group at 0 ～ 12 h were higher than those of control group, however, only at 0 h the difference (1.19±0.49 vs 0. 32±0.14 mmol/L) was significant (P < 0.05) ; serum levels of FFA in HLANP group were not significantly different when compared with those of control group; serum levels of LPL and HL at 3 h were (17.5±7) U/L and (18.6±3.9) U/L, which were significantly higher than those of control group (8.9±3.4 U/L and 9.5±2. 1 U/L, P < 0.05). The pancreatic tissues necrosis levels were significantly increased in HLANP groups (3, 6, 24 and 48 h) than those of control group at corresponding time points (P < 0.05). lipid droplet deposition, rough endoplasmic reticulum distension, zymogen granule reduction, and chondriosome swelling in acinar cells of pancreatic tissues in HLANP group were found. The HI, mRNA expressions at 3 h and 6 h in HLANP group were 1.1±0.09 and 0.89±0.08, which were significantly higher than those in control group (0. 11 ± 0.01 and 0.15±0. 03, P <0.05). HL proteins were positively expressed in pancreatic tissues of two groups before ANP was induced, and HL proteins were strongly positively expressed after ANP induction. Conclusions Lipase (LPL/HL) expression increased in HLANP rats, and the content of serum protein increased, which resulted in lipids decomposition and increased the severity of ANP. LPL/HL may be one of the key lipids metabolic enzymes aggravating HLANP.

Factores circulantes de injuria endotelial y procesos subendoteliales en mujeres postmenopáusicas sanas / Endothelial injuring factors and subendothelial events in healthy postmenopausal women

La concentración elevada de lipoproteínas aterogénicas con apo B en mujeres posmenopáusicas (MPM), es un componente importante del mecanismo multifactorial causante de la enfermedad coronaria. En MPM sanas (n=30) en comparación con premenopáusicas (MpreM) (n=28), se evaluó el perfil lipoproteico incluyendo apoproteínas A-I y B, LDL pequeña y densa, composición y oxidabilidad de LDL, proteína transportadora de colesterol esterificado y lipasa hepática. Se determinaron los siguientes factores emergentes: homocisteína, fosfolipasa A2, ferritina, PCR-hs (alta sensibilidad) y fibronectina proveniente de la matriz extracelular. La insulino-resistencia fue evaluada por la circunferencia de cintura, el índice HOMA y el índice triglicéridos/colesterol-HDL. El índice de riesgo apo B/apoA-I fue significativamente mayor en MPM (p<0,0001). MPM presentaron mayor proporción de LDL pequeña y densa, la cual correlacionó con el aumento de actividad de lipasa hepática (p<0,005), y con marcadores de insulino-resistencia (p<0,05). Fosfolipasa A2 (p<0,05), homocisteína (p<0,005), ferritina (p<0,0001), PCR-hs (p<0,005) y fibronectina (p<0,05)) fueron mayores en MPM. La oxidabilidad de LDL no mostró diferencias significativas pero correlacionó positivamente con LDL pequeña y densa (p<0,01), fosfolipasa A2 (p<0,05), homocisteína (p<0,05), PCR-hs (p<0,04), fibronectina (p<0,05) y cintura (p<0,02). Luego de ajustar por la condición menopáusica, edad y cintura, la oxidabilidad de LDL permaneció asociada con LDL pequeña y densa (b:0,36, p=0,027), homocisteína (b:0,36, p<0,038), fibronectina (b:0,41 p=0,05) y cintura (b:0,35, p=0,047). En este estudio, la interacción de factores de riesgo aterogénico clásicos y no tradicionales sugiere una secuencia de eventos que comienzan con la injuria endotelial causada por homocisteína y LDL pequeña y densa, que penetra en subendotelio donde su oxidación es favorecida por la homocisteína. Se produciría un proceso inflamatorio, que cursa con aumento de PCR y ferritina. La fosfolipasa A2, proveniente de macrófagos, atravesaría el endotelio unida a la LDL modificada, y promueve la liberación de fibronectina desde la matriz extracelular. La estrecha interacción entre la injuria endotelial, inflamación e insulino-resistencia se observaría desde estadíos subclínicos de aterosclerosis en MPM sanas.

In postmenopausal women (PMW), high concentrations of atherogenic apoB lipoproteins is an important component of the multifactorial mechanism underlying a higher risk of coronary artery disease, as compared with premenopausal women (PreMW). Lipoprotein pattern, including apopoproteins A-I and B, LDL chemical composition and small dense LDL (sdLDL), hepatic lipase activity, circulating cholesterol transfer protein and LDL oxidability were assessed in PMW (n=30) in comparison to PreMW (n=28). The following endothelial injuring factors were measured: homocysteine, lipoprotein binding phospholipase A2 (LpPLA2), ferritin, hs-CRP and fibronectin coming from extracellular vascular matrix. Insulin-resistance was evaluated by waist circumference, HOMA and triglyceride/HDL-cholesterol. PMW showed higher apoB/apoA-I (p<0.0001) and a higher proportion of sdLDL which showed significant correlations with the increase in hepatic lipase activity (p<0.005) and insulin-resistance markers (p<0.05). LpPLA2 (p<0.05), homocysteine (p<0.005), hs-CRP (p<0.005), fibronectin (p<0.05) and ferritin (p<0.0001) were elevated in PMW. LDL oxidability showed no differences between groups, but was positively correlated with waist (p<0.02), homocysteine (p<0.05), fibronectin (p<0.05), hs-CRP (p<0.04), LpPLA2 (p<0.05) and sdLDL (p<0.01). After adjusting by age, menopausal condition and waist, LDL oxidability remained associated with homocysteine (b: 0,36) p<0,038), sdLDL (b: 0.36, p=0.027), waist (b: 0.35, p=0.047) and fibronectin (b: 0,41 p=0.05). In this study, the interaction of classic and emerging atherogenic risk factors would suggest a sequence of events starting with endothelial damage caused by homocysteine and sdLDL, promoting its passage into the subendothelial space where it is oxidatively modified, enhanced by homocysteine. The above mentioned inflammatory process takes place with an increase in circulating hs-CRP and ferritin. LpPLA2, coming from macrophages, passes through the endothelium bound to modified LDL, promoting a release of fibronectin from the subendothelial extracellular matrix. Results suggest that the close interaction among endothelial injury, inflammation and insulin resistance can be observed since subclinical atherosclerosis states in healthy PMW.

The-514C/T polymorphism of hepatic lipase and the relation to coronary heart disease / 中国药理学通报

Aim To elucidate the polymorphism of hepatic lipasegene gene and the relation to coronary heart disease. Methods CHD group had one hundred and fifty-six patients, and each subgroup was: myocardium infarction CHD subgroup included eighty-four patients; non-myocardium infarction subgroup included seventy-two patients; pure CHD subgroup comprised sixty-five patients and hypertension and CHD subgroup comprised ninety-one patients. Phenol-Chloroform method was used to extract DNA from human peripheral blood, and a combination of polymerasechain reaction and restriction fragment length polymorphism were used to analyze the distribution of genotypes and alleles of the polymorphism site of hepatic lipase. Results The genotype and allele distribution of HL-514C/T polymorphism were significantly different between the whole CHD group and control group(P

Effect of tea-polyphenols on the lipoprotein lipase and hepatic lipase activity in atherosclerosis rabbits / 中国病理生理杂志

0.05). HL activity in liver tissue in AS group was significantly lower than control group (P

Effects of Environmental Tobacco Smoke on Serum Lipid and the Lipases of Serum and Liver and Lung in Rats / 环境与健康杂志

0.05).The smoking group had a higher TG level and a lower HDL-C level than the control one with statistical significance(P0.05).The HL activities in serum,lung and liver of smoking group were lower than those of control group(P

Effect of tribu saponin from Tribulus terrestris on the lipoprotein lipase and(hepatic) lipase activity in lipid metabolic disorder mice / 中成药

AIM:To investigate the effect of tribu saponin from Tribulus terrestris(STT) on the lipoprotein lipase(LPL) and hepatic lipase(HL) activity in lipid metabolic disorder mice.METHODS:Mice being fed lipodiet were taken in STT through the experiment with Fenofibrate as positive control drug.Four weeks later,the levels of LPL in the plasma,the adipose tissue,liver tissue,muscular tissue and the levels HL activity in the plasma,liver tissue were estimated with LPL and HL Kit.RESULTS:HL activity in liver tissue in lipid metabolic disorder group was significantly lower than that in STT,Fenonbrate and normal group(P0.05).In STT group,the LPL activity in adipose was lower(P

Determination of Lipoprotein Lipase and Hepatic Lipase in Children with Nephrotic Syndrome / 实用儿科临床杂志

Objective To investigate pathogenesis of liprd metabolism disorder in children with nephrotic syndrome. Methods Serum lipid and plasma llpoprotein lipase and hepatic lipase were detected in 62 nephrotic syndrome children and 30 normal children, respectively. Results The activity of lipoprotein lipase and hepatic lipase was lower than that in normal control group, while serum cholesterol, triglycerides and low -density lipoprotein in nephrotic group were higher than those in control group. Lipoprotein lipase and hepatic lipase were negative correlation with triglycerides and low - density lipoprotein, respectively. Conclusions Reduced activity of lipoprotein lipase and hepatic lipase is one of causes leading to hypertriglyceridemia in nephrotic syndrome.

Effects of Policosanol on Activity of Lipoprotein Metabolism Key Enzyme in Hyperlipoidemia Rats / 中国药房

OBJECTIVE:To investigate the regulation effects of policosanol on lowering cholesterol and its enzymatic mechanism.METHODS:The rats were randomly assigned into control group,policosanol prevention group (4.0 mg?kg-1?d-1),policosanol low-dose,medium-dose and high-dose groups (4.0 mg?kg-1?d-1,6.0 mg?kg-1?d-1,8.0 mg?kg-1?d-1),lovastatin group (positive control) and hyperlipoidemia model group.The last five groups were induced hyperlipoidemia model for 4 weeks.Blood samples were collected after 6 weeks administration (i.g.).The levels of TC,TG,LDL-C and HDL-C in the serum were determined.Body weight and liver weight were measured and hepatic index was calculated.The activity of lecithin cholesterol acyl transferase (LCAT) in serum,hepatic lipoprotein lipase (LPL) and hepatic lipase (HL) were detected.RESULTS:Policosanol remarkably decreased the levels of TC (ranged from 39.1% to 43.3%) and LDL-C (ranged from 66.6% to 80.7%) in serum and hepatic index (ranged from 11.1% to 11.8%) (P

THE EFFECTS OF FRACTION-2 OF ALKALI-EXTRACTED HEPARINOID ( C_2 ) ON LIPASES AND PLASMA LIPIDS / 中国药理学通报

The study was undertaken to ascertain the effects of C2 on he- patic lipase(HL), lipoprotein lipase ( LPL ) and plasma lipids. It was found that HDL-c and HDL-c /TC were increased, but(VLDL + LDL)-c and TC were decreased. LPL activety was positively correlated with the increase of HDL-c and the decrease of ( VLDL+LDL )-c.

EFFECT OF LYCOPENE ON PREVENTION OF LIPID METABOLIC DISTURBANCE IN RATS AND ITS MECHANISM / 营养学报

Objective To study the protective mechanism of lycopene by modulating lipid metabolic disturbance in rats. Method The hyperlipidemic rats were induced by high fat diet and were divided into groups given different doses of lycopene. The serum total cholesterd(TC), triglyceride(TG), low density lipoprotein cholesterol(LDL-C), high density lipoprotein cholesterol(HDL-C), the hepatic lipase(HL) and lipoprotein lipase(LPL)activity in liver were tested by biochemical method, and the expression of low density lipoprotein receptor(LDL-R)in liver was detected by Western blot analyses. Results Lycopene decreased serum TC, TG, LDL-C, and the activity of LPL and HL in three lycopene groups were higher than those in model group, and the high dose group was the highest. Conclusion Lycopene may increase the lipases’activity and the expression of LDL-R, and decrease the deposit of TG and LDL in liver to prevent lipid metabolic disturbance.