Liver specific inactivation of carboxylesterase 3/triacylglycerol hydrolase decreases blood lipids without causing severe steatosis in mice

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.

Download Full-text

Type A behavior in healthy males and females as related to physiological reactivity and blood lipids

PsycEXTRA Dataset ◽

10.1037/e576092009-001 ◽

1987 ◽

Cited By ~ 1

Author(s):

Ulf Lundberg ◽

Monica Hedman ◽

Bo Melin ◽

Marianne Frankenhaeuser

Keyword(s):

Blood Lipids ◽

Type A ◽

Type A Behavior ◽

Physiological Reactivity ◽

Males And Females ◽

Healthy Males

Download Full-text

Coagulation Factor VII, Dietary Fat and Blood Lipids: A Review

Thrombosis and Haemostasis ◽

10.1055/s-0038-1650609 ◽

1996 ◽

Vol 76 (04) ◽

pp. 492-499 ◽

Cited By ~ 50

Author(s):

L I Mennen ◽

E G Schouten ◽

D E Grobbee ◽

C Kluft

Keyword(s):

Dietary Fat ◽

Blood Lipids ◽

Coagulation Factor ◽

Factor Vii ◽

Coagulation Factor Vii

Download Full-text

Haematocrit: Relationships with Blood Lipids, Blood Pressure and other Cardiovascular Risk Factors

Thrombosis and Haemostasis ◽

10.1055/s-0038-1648811 ◽

1994 ◽

Vol 72 (01) ◽

pp. 058-064 ◽

Cited By ~ 14

Author(s):

Goya Wannamethee ◽

A Gerald Shaper

Keyword(s):

Physical Activity ◽

Risk Factors ◽

Blood Pressure ◽

Body Mass Index ◽

Cardiovascular Risk ◽

Cardiovascular Risk Factors ◽

Alcohol Intake ◽

Blood Lipids ◽

The Other ◽

The Relationship

SummaryThe relationship between haematocrit and cardiovascular risk factors, particularly blood pressure and blood lipids, has been examined in detail in a large prospective study of 7735 middle-aged men drawn from general practices in 24 British towns. The analyses are restricted to the 5494 men free of any evidence of ischaemic heart disease at screening.Smoking, body mass index, physical activity, alcohol intake and lung function (FEV1) were factors strongly associated with haematocrit levels independent of each other. Age showed a significant but small independent association with haematocrit. Non-manual workers had slightly higher haematocrit levels than manual workers; this difference increased considerably and became significant after adjustment for the other risk factors. Diabetics showed significantly lower levels of haematocrit than non-diabetics. In the univariate analysis, haematocrit was significantly associated with total serum protein (r = 0*18), cholesterol (r = 0.16), triglyceride (r = 0.15), diastolic blood pressure (r = 0.17) and heart rate (r = 0.14); all at p <0.0001. A weaker but significant association was seen with systolic blood pressure (r = 0.09, p <0.001). These relationships remained significant even after adjustment for age, smoking, body mass index, physical activity, alcohol intake, lung function, presence of diabetes, social class and for each of the other biological variables; the relationship with systolic blood pressure was considerably weakened. No association was seen with blood glucose and HDL-cholesterol. This study has shown significant associations between several lifestyle characteristics and the haematocrit and supports the findings of a significant relationship between the haematocrit and blood lipids and blood pressure. It emphasises the role of the haematocrit in assessing the risk of ischaemic heart disease and stroke in individuals, and the need to take haematocrit levels into account in determining the importance of other cardiovascular risk factors.

Download Full-text