scholarly journals P1266SERUM MALONDIALDEHYDE-MODIFIED LOW-DENSITY LIPOPROTEIN LEVEL IS A RISK FOR AORTIC STIFFNESS IN MAINTENANCE HEMODIALYSIS PATIENTS

2020 ◽  
Vol 35 (Supplement_3) ◽  
Author(s):  
Jia-Sian Hou ◽  
Chia-Wen Lu ◽  
Bang-Gee Hsu

Abstract Background and Aims Circulating oxidized malondialdehyde LDL (MDA-LDL) induced macrophage apoptosis, the release of higher levels of matrix metalloproteinases and TNF-α, therefore, act as a marker of oxidative stress and are associated with atherosclerotic cardiovascular diseases. We evaluated the association between serum MDA-LDL levels and aortic stiffness in patients with hemodialysis (HD). Method A total of 155 patients with HD were enrolled in this study. Carotid-femoral pulse wave velocity (cfPWV) value was measured by a validated tonometry system (SphygmoCor). Patients with cfPWV >10 m/s were used to define the aortic stiffness group, while values ≤ 10 m/s were regarded as the control group, according to the ESH-ESC 2013. Serum MDA-LDL levels were measured using a commercial enzyme-linked immunosorbent assay. Results 68 patients (43.9%) had aortic stiffness and higher percentages of diabetes (p < 0.001), hypertension (p = 0.017), and had older age (p = 0.038), higher systolic blood pressure (P = 0.021), serum MDA-LDL level (p < 0.001) compared to subjects with control group. After adjusting for factors significantly associated with aortic stiffness by multivariable logistic regression analysis revealed that serum MDA-LDL levels (odds ratio (OR): 1.014, 95% confidence interval (CI): 1.007–1.021, p < 0.001), diabetes (OR: 2.893, 95% CI: 1.300–6.437, p = 0.009), and hypertension (OR: 2.408, 95% CI: 1.066–5.436, p = 0.034) were the independent predictors of aortic stiffness in HD patients. Multivariable forward stepwise linear regression analysis also showed that serum logarithmically transformed MDA-LDL level (log-MDA-LDL, β = 0.404, adjusted R2 change = 0.265, p < 0.001), diabetes (β = 0.233, adjusted R2 change = 0.055, p = 0.001), and hypertension (β = 0.132, adjusted R2 change = 0.014, p = 0.048) were the independent predictors of cfPWV values in HD patients. The area under the receiver-operating characteristic (ROC) curve predicting aortic stiffness by serum MDA-LDL level in HD patients was 0.721 (95% CI: 0.643-0.790, p < 0.001). Conclusion In this study, high serum MDA-LDL level was positively associated with cfPWV values and thus was related to aortic stiffness in HD patients.

Nutrients ◽  
2020 ◽  
Vol 12 (7) ◽  
pp. 2160
Author(s):  
Jia-Sian Hou ◽  
Chih-Hsien Wang ◽  
Yu-Hsien Lai ◽  
Chiu-Huang Kuo ◽  
Yu-Li Lin ◽  
...  

Circulating malondialdehyde-modified low-density lipoprotein (MDA-LDL) acts as a marker of oxidative stress and is associated with atherosclerotic cardiovascular disease. The relationship between serum MDA-LDL levels and aortic stiffness (AS) in patients with hemodialysis (HD) was evaluated. There were 155 HD patients enrolled in this study. Carotid-femoral pulse wave velocity (cfPWV) was measured by a validated tonometry system. Patients with cfPWV >10 m/s were used to define the AS group, while those with values of ≤10 m/s were regarded as the control group. Serum MDA-LDL levels were measured using a commercial enzyme-linked immunosorbent assay. Sixty-eight patients (43.9%) who were defined as AS sufferers, and were older, had a higher percentage of diabetes and hypertension and higher systolic blood pressure and serum MDA-LDL level compared to subjects in the control group. After adjusting for factors significantly associated with AS by multivariable logistic regression analysis, it was revealed that serum MDA-LDL levels, diabetes, and hypertension were independent predictors of AS in HD patients. Multivariable forward stepwise linear regression analysis also showed that a logarithmically transformed MDA-LDL level was significantly correlated with cfPWV values in HD patients. In HD patients, a high serum MDA-LDL level was positively associated with cfPWV values and was a significant predictor of the development of high AS.


Author(s):  
Yuan-Chieh Chang ◽  
Jen-Pi Tsai ◽  
Ji-Hung Wang ◽  
Bang-Gee Hsu

By suppressing mineralization and preventing ectopic calcium deposits, osteopontin (OPN) has an inhibitory effect on vascular calcification. Also, there is an association between OPN and aortic stiffness (AS). We aimed to investigate the association between serum OPN levels and AS measured by carotid–femoral pulse wave velocity (cfPWV) in hypertensive patients. Baseline characteristics and fasting blood sampling of 120 participants with hypertension and 120 participants without hypertension were acquired. Serum OPN concentrations were determined by enzyme-linked immunosorbent assay. In total, 43 (35.9%) participants were assigned to the AS group with cfPWV of >10 m/s in hypertensive patients. There were more patients with diabetes mellitus, old age, high systolic blood pressure, high serum intact parathyroid hormone (iPTH), elevated C-reactive protein, and high OPN levels in the AS group compared with the control group in hypertensive participants. A multivariate logistic regression analysis discloses that age, SBP, serum OPN, and iPTH levels were independently associated with AS in hypertensive patients. Moreover, according to a multivariate forward stepwise linear regression analysis, OPN level is positively associated with cfPWV. In conclusion, serum OPN level is assumed to be a potential biomarker to predict AS and is positively associated with cfPWV in patients with hypertension.


2020 ◽  
Vol 35 (Supplement_3) ◽  
Author(s):  
Yu-Chi Chang ◽  
Chi-Chong Tang ◽  
Bang-Gee Hsu

Abstract Background and Aims 3-methyl histidine (3MH) is a non-proteinogenic amino acid and an index of muscle breakdown. Subclinical protein malnutrition is an independent association with arterial stiffness. The aim of this study was to evaluate the relationship between serum 3MH levels and carotid-femoral pulse wave velocity (cfPWV) values in chronic hemodialysis patients. Method Fasting blood samples and baseline characteristics were obtained from 136 chronic hemodialysis patients. Serum 3MH was performed with high-performance liquid chromatography and mass spectrometry. Aortic arterial stiffness was defined as cfPWV values >10 m/s according to the ESH-ESC 2013 guidelines. Results Among 110 chronic hemodialysis patients, 45 patients (40.9%) were in the aortic arterial stiffness group. When compared to those in the control group, the aortic arterial stiffness group had high prevalence of diabetes mellitus (p < 0.001), hypertension (p = 0.006), older age (p = 0.002), higher systolic blood pressure (p = 0.016), and lower serum 3MH level (p = 0.001). Multivariable logistic regression analysis of the factors significantly associated with aortic arterial stiffness revealed that serum 3MH levels (odds ratio (OR): 0.791, 95% confidence interval (CI): 0.691–0.906, p = 0.001) was the independent predictor of aortic arterial stiffness in chronic hemodialysis patients. Multivariable forward stepwise linear regression analysis also showed that logarithmically transformed 3MH level (log-3MH, β = -0.322, adjusted R2 change = 0.127, p < 0.001) was an independent predictor of cfPWV values in chronic hemodialysis patients. The area under the receiver-operating characteristic (ROC) curve indicates the diagnostic power of 3MH at predicting aortic stiffness of chronic hemodialysis patients was 0.691 (95% CI: 0.595-0.775, p = 0.0002). Conclusion Serum-free 3MH level is negatively associated with aortic arterial stiffness in chronic hemodialysis patients.


2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Özgür Altun ◽  
Yücel Arman ◽  
Şengül Aydın Yoldemir ◽  
Ayşe Selcen Pala ◽  
Perihan Özkan Gümüşkaya ◽  
...  

Abstract Background Laminin, one of the largest glycoproteins of the basement membrane, is an important component of the extracellular matrix. Functions of the basement membrane include regulation of cell signaling behaviors and structural support. Laminin plays a critical role in the regulation of insulin action in muscle, liver, and adipose tissue. The study mainly investigates an association between the change in serum laminin levels and insulin resistance and non-alcoholic hepatosteatosis. Methods This prospective study included a total of 90 participants; 60 patients diagnosed with Grade 2–3 non-alcoholic hepatosteatosis and 30 age- and sex-matched healthy controls between December 2019 and December 2020. Routine laboratory tests including glucose, insulin, homeostatic model of assessment-insulin resistance (HOMA-IR), alanine aminotransferase (ALT), aspartate aminotransferase (AST), triglyceride, low-density lipoprotein cholesterol (LDL-C), high-density lipoprotein cholesterol (HDL-C), and C-reactive protein and laminin levels were measured in the serum of the patient and control groups. Enzyme-linked immunosorbent assay was used for the measurement of laminin levels. Results The median serum laminin levels were lower in patients with hepatic steatosis, compared to the control group (72 ng/L vs. 82 ng/L, respectively; p = 0.003). In the patients with insulin resistance, median laminin levels were lower, regardless of the presence of non-alcoholic hepatosteatosis (67 ng/L vs. 85 ng/L, respectively; p = 0.007). There was a weak, negative correlation between the laminin levels and HOMA-IR. Conclusions Our study results suggest that, although there is no exact link between laminin and non-alcoholic hepatosteatosis, serum laminin levels are lower in patients with insulin resistance by regulating the insulin effect through integrins.


2021 ◽  
Vol 2021 ◽  
pp. 1-6
Author(s):  
Jun Zhao ◽  
Wei Lu ◽  
Junshan Li ◽  
Lei Liu ◽  
Xiumin Zhao

Objective. Neural cell adhesion molecule (NCAM), a glycoprotein widely distributed in the brain, has recently been shown to regulate neuroplasticity. However, the role of NCAM in vascular dementia (VaD) is still unclear. The purpose of this study is to determine whether NCAM is involved in the course of VaD. Methods. Continuous recruitment of VaD patients and control population to join this study. Doctors or nurses are responsible for collecting their clinical characteristics including age, gender, formal education, heart rate, supine systolic blood pressure, supine diastolic blood pressure, fasting glucose, high-density lipoprotein, and low-density lipoprotein. Each participant received the Montreal Cognitive Assessment (MoCA) scale after being enrolled in the group. At the same time, their peripheral blood was collected, and their serum NCAM levels were measured by enzyme-linked immunosorbent assay (ELISA). Results. 98 VaD patients and 83 age- and sex-matched controls were enrolled. There was no significant statistical difference between the VaD group and the control group in terms of the comparison of clinical characteristics ( p > 0.05 ). The MoCA score of VaD patients was significantly lower than that of the controls ( 27.9 ± 1.4 vs. 23.0 ± 2.1 points, p < 0.001 ). In addition, the circulating NCAM level of VaD patients was also significantly lower than that of controls ( 21.7 ± 3.8 vs. 17.6 ± 4.2  ng/mL, p < 0.001 ). The circulating NCAM level of VaD patients was significantly positively correlated with MoCA score ( r = 0.285 , p = 0.026 ). After adjusting for clinical characteristics, circulating NCAM levels are still an independent pathogenic factor of VaD (regression coefficient = 0.223 , p = 0.034 ). Conclusions. VaD patients have low circulating NCAM levels, which can be used as a potential predictor of VaD.


2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Chung-Jen Lee ◽  
Ji-Hung Wang ◽  
Yu-Chih Chen ◽  
Mei-Ling Chen ◽  
Chiu-Fen Yang ◽  
...  

Osteopontin (OPN) is involved in the regulation of vascular calcification processes. The aim of this study was to evaluate the relationship between fasting serum OPN concentration and carotid-femoral pulse wave velocity (cfPWV) in geriatric persons. Fasting blood samples were obtained from 93 geriatric persons. cfPWV were performed by SphygmoCor system. Serum OPN levels were measured using a commercially available enzyme-linked immunosorbent assay. Geriatric adults who had diabetes (P=0.007) or dyslipidemia (P=0.029) had higher cfPWV levels than those without diabetes or dyslipidemia. The univariable linear regression analysis showed that age (P=0.002), waist circumference (P=0.048), body mass index (P=0.004), systolic blood pressure (P=0.001), diastolic blood pressure (P=0.036), pulse pressure (P=0.017), creatinine (P=0.002), and log-OPN level (P=0.001) were positively correlated with cfPWV levels, while the high-density lipoprotein cholesterol (HDL-cholesterol) level (P=0.007) and glomerular filtration rate (P=0.001) were negatively correlated with cfPWV levels among the geriatric adults. Multivariable forward stepwise linear regression analysis of the significant variables also showed that log-OPN (β=0.233,R2=0.123, regression coefficient: 1.868,P=0.011) was still an independent predictor of cfPWV levels in geriatric persons.


2021 ◽  
Vol 12 (2) ◽  
pp. 362-368
Author(s):  
P. G. Kravchun ◽  
O. I. Kadykova ◽  
U. S. Herasymchuk

Hypertensive disease today is one of the most common cardiovascular diseases, as well as the most common disease associated with obesity. Evaluation of the level of adipokines, namely adiponutrin and galanin, depending on the degree and duration of hypertension, the degree of obesity and their correction against the background of combined antihypertensive therapy is relevant for further understanding of this comorbidity and improvement of the early diagnostics. 127 people were examined, including 107 patients with hypertension of degree 1–3 and 20 healthy persons. Of the patients included in the study, the adiponutrin and the galanin levels were determined in 58 patients, out of which 22 were prescribed different regimens of combined antihypertensive therapy. To determine the level of adiponutrin and galanin, an enzyme-linked immunosorbent assay was used. A significant increase was found in the blood serum of the examined adipokines in comparison with the control group: the galanin level was 4.8 times higher than in the control group, the adiponutrin level in patients with this comorbid pathology was 3.3 times higher than that in the control group. The galanin level is most pronounced in patients with hypertension of degree 3 and obesity of degree 3, which is confirmed by the presence of a direct correlation with systolic, diastolic and pulse blood pressure, very low density lipoprotein cholesterol. The adiponutrin level in the blood serum increased correspondingly to the increase in body mass index: in patients with obesity of degree 3 it was 15.8 times higher than this indicator in patients with normal body weight, 8.8 times higher than in patients with overweight, 6.1 times higher than in patients with obesity of degree 1 and 2.5 times higher than in patients with obesity of degree 2. The levels of the studied adipokines in patients differed also relative to the duration of hypertension. There was a 1.8-, 5.1-, 5.2-fold increase (respectively, ≤5, 6–10, >10 years) of the galanin content in the blood serum compared to the control group. Also an increase of the serum adiponutrin level was noted in comparison with the control group. Against the background of combined antihypertensive therapy, we observed favourable dynamics of galanin and adiponutrin. It is important to conduct further studies to assess the activity of galanin and adiponutrin with a longer follow-up period in wider populations.


Author(s):  
Eman A. Al-Rekabi ◽  
Dheyaa K. Alomer ◽  
Rana Talib Al-Muswie ◽  
Khalid G. Al-Fartosi

The present study aimed to investigate the effect of turmeric and ginger on lipid profile of male rats exposed to oxidative stress induced by hydrogen peroxide H2O2 at a concentration of 1% given with consumed drinking water to male rats. Methods: 200 mg/kg from turmeric and ginger were used, and the animals were treatment for 30 days. Results: the results showed a significant increase in cholesterol, triglycerides, low density lipoprotein (LDL), very low density lipoprotein (VLDL), whereas it explained a significant decrease in high density lipoprotein (HDL) of male rats exposed to oxidative stress when compared with control group. the results showed a significant decrease in cholesterol, triglycerides, (LDL), (VLDL), whereas it explained a significant increase in (HDL) of rats treated with turmeric and ginger at dose 200 mg/kg when compared with male rats exposed to oxidative stress.


2020 ◽  
Vol 21 (3) ◽  
pp. 74-79
Author(s):  
Ahmed Elbaz ◽  
Said El-sheikh

Objective: To investigate the effect of antibiotics and/or probiotics on broiler performance, some serum metabolites, cecum microflora composition, and ileum histomorphology under the Egyptian conditions. Design: Randomized controlled experimental study. Animals: Two hundred forty 1-day-old Ross (308) chicks were reared till 35 days of age. Procedures: The birds were randomly allocated into four main groups: a control diet without additives (CON); probiotic (Lactobacillus acidophilus) supplemented diet (PRO); antibiotic (Avilamycin) supplemented diet (ANT) and a mix group (AP) that received antibiotic in the diet form 1 to 4 days of age and treated during the rest of the experimental period with probiotics. Results: Chickens fed on probiotic or antibiotic diets had linear improvement in live body weight (LBW) and feed conversion ratio (FCR) compared with the control group, while the best LBW and FCR were in the AP group. An improvement in the nutrient digestibility was observed in the probiotic added groups (PRO and AP). Serum cholesterol and low-density lipoprotein cholesterol contents decreased when antimicrobial (probiotic or antibiotic) supplementations were used, while there was an increase in high-density lipoprotein cholesterol contents, serum total protein, and albumin levels. Among all groups, cecum Clostridium perfringens and Escherichia coli counts decreased; however, there was an increase in Lactobacillus count compared to the control group. In probiotic supplemented groups (PRO and AP), a significant (P<0.05) improvement in ilea architecture. Conclusion and clinical relevance: Using probiotic after initial treatment with an antibiotic in broiler diets had a positive effect on broiler growth performance, gut health (improved cecum microbial populations and ileum histomorphology), and nutrient digestibility.


2020 ◽  
Vol 18 ◽  
Author(s):  
Xiaohan Xu ◽  
Meng Chai ◽  
Yujing Cheng ◽  
Pingan Peng ◽  
Xiaoli Liu ◽  
...  

Aims: To explore early intensive lipid-lowering therapy in patients with non-ST-segment elevation acute coronary syndrome (NSTE-ACS). Background: Lowering low-density lipoprotein cholesterol (LDL-C) levels can reduce cardiovascular morbidity and mortality in patients with atherosclerotic cardiovascular disease. Due to many reasons, the need for early intensive lipid-lowering therapy is far from being met in Chinese NSTE-ACS patients at high-risk of recurrent ischaemic events. Objective: To evaluate the feasibility, safety and efficacy of starting evolocumab in hospital to lower LDL-C levels in Chinese patients with NSTE-ACS. Methods: In this prospective cohort study initiated by researchers, 334 consecutive patients with NSTE-ACS who had sub-standard LDL-C levels (LDL-C ≥2.3 mmol/L after regular oral statin treatment for at least 4 weeks; or LDL-C ≥3.2 mmol/L without regular oral statin treatment) were included. Patients who agreed to treatment with evolocumab (140 mg subcutaneously every 2 weeks, initiated in hospital and used for 12 weeks after discharge) were enrolled in the evolocumab group (n=96) and others in the control group (n=238). All enrolled patients received regular statin treatment (atorvastatin 20 mg/day or rosuvastatin 10 mg/day; doses unchanged throughout the study).The primary endpoint was the change in LDL-C levels from baseline to week 12. Results: Most patients (67.1%) had not received regular statin treatment before. In the evolocumab group, LDL-C levels decreased significantly at week 4 and remained stable at week 8 and 12 (all p<0.001). At week 12, the LDL-C percentage change from baseline in the evolocumab group was -79.2±12.7% (from an average of 3.7 to 0.7 mmol/L), while in the control group it was -37.4±15.4% (from an average of 3.3 to 2.0 mmol/L). The mean difference between these 2 groups was -41.8% (95% CI -45.0 to -38.5%; p<0.001). At week 12, the proportions of patients with LDL-C levels <1.8 mmol/L and 1.4 mmol/L in the evolocumab group were significantly higher than in the control group (96.8 vs 36.1%; 90.6 vs 7.1%; both p<0.001). The incidence of adverse events and cardiovascular events was similar in both groups. Conclusions: In this prospective cohort study we evaluated the early initiation of evolocumab in NSTE-ACS patients in China. Evolocumab combined with statins significantly lowered LDL-C levels and increased the probability of achieving recommended LDL-C levels, with satisfactory safety and well tolerance.


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