scholarly journals P1103A RANDOMIZED CONTROLLED STUDY ON THE DIALYZERS WITH CELLULOSE TRIACETATE MEMBRANE AND WITH POLYSULFONE MEMBRANE FOR MAINTENANCE HEMODIALYSIS PATIENTS

2020 ◽  
Vol 35 (Supplement_3) ◽  
Author(s):  
Zhang Chen ◽  
Yang Yun ◽  
Nai-quan Liu ◽  
Guang-yu Zhou ◽  
De-tian Li
Keyword(s):  
Adhesion Molecule ◽  
Statistical Difference ◽  
Cellulose Triacetate ◽  
Intercellular Adhesion Molecule ◽  
Controlled Study ◽  
Maintenance Hemodialysis ◽  
Dialysis Membrane ◽  
Intercellular Adhesion Molecule 1 ◽  
Polysulfone Membrane ◽  
Significant Difference

Abstract Background and Aims With the continuous development and optimization of dialysis membrane materials, polysulfone (PS) as the third generation of dialysis membrane has replaced cellulose triacetate (CTA) and dominated the market because of its better biocompatibility. However, we found that the hypersensitivity to PS could be remitted by the application of CTA in clinical practice. Objective to compare the differences in toxin removal, hematological change and biocompatibility in maintenance hemodialysis (MHD) patients using CTA dialyzer and PS dialyzer. Method A total of 20 MHD patients treated in the Second Blood Purification Center of Shengjing Hospital from June 2017 to September 2017 were enrolled in this study. They were randomly divided into group CTA and group PS (n=10/each group). They were treated with regular hemodialysis of 4 hours/time and 3 times/week for one month. The clearances of creatinine (CR), blood urea nitrogen (BUN) and serum phosphorus (P), the changes of hemoglobin (Hb), platelet (PLT) and white blood cell (WBC), and the differences of C-reactive protein (CRP), IgE, complement 3 (C3), vascular cell adhesion molecule-1 (VCAM-1) and intercellular adhesion molecule-1 (ICAM-1) were compared between group CTA and group PS. Results Age (t=-0.735, P=0.465), gender (c2 =2.410, P=0.120), dialysis age (t=0.336, P=0.738) and primary diseases (c2 =3.817, P=0.701) had no statistical differences between the two groups. Before the hemodialysis with CTA dialyzer and PS dialyzer, there were no statistical differences in all of the parameters between the two groups (P>0.05). After application of CTA dialyzer and PS dialyzer for one month, ①there were no statistical differences in CR, BUN and P, nor in the changes of the above indicators between the two groups (P>0.05); ② there was a statistical difference in Hb change between the two groups (t=-2.282, P=0.027), with better improvement of anemia in group CTA; ③ there was a statistical difference in PLT (t=2.947, P=0.005) between the two groups, with slighter change in group CTA than in group PS (t= 2.219, P=0.031); ④there were no statistical significances in WBC, VCAM-1, ICAM-1, IgE, CRP and C3 between the two groups (P>0.05). Conclusion ①There were no significant difference in the clearances of small molecule toxins between CTA dialyzer and PS dialyzer. ② CTA was better than PS in the improvement of anemia. ③ The effect on PLT was less in group CTA than in group PS. ④ There were no significant differences in biocompatibility between CTA dialyzer and PS dialyzer.

scholarly journals Plasma BDNF Levels Are Associated with Stroke in Children with SCD

Blood ◽  
2019 ◽  
Vol 134 (Supplement_1) ◽  
pp. 3565-3565
Author(s):  
Julia A. Drexelius ◽  
Celeste K. Kanne ◽  
Huy D Tran ◽  
Hyacinth I Hyacinth ◽  
Vivien A. Sheehan
Keyword(s):  
Adhesion Molecule ◽  
Plasma Levels ◽  
Stroke Risk ◽  
Intercellular Adhesion Molecule ◽  
Vascular Cell Adhesion ◽  
Intercellular Adhesion Molecule 1 ◽  
Transfusion Therapy ◽  
Significant Difference ◽  
Cell Adhesion Molecule 1 ◽  
Trans Cranial Doppler

Background: Cerebrovascular disease, particularly overt stroke, is one of the most critical clinical complications of sickle cell disease (SCD). Individual stroke risk for patients with SCD is assessed by measuring trans-cranial Doppler ultrasound (TCD) velocity. While TCD screening and resulting use of chronic blood transfusion therapy in patients with abnormal TCDs has reduced stroke incidence in patients with SCD from 11% to 1%, the test has significant limitations. It can only be performed on children old enough to remain still for the assessment, or young enough to have open bony windows; typically 2-16 years of age. Additionally the test has poor positive predictive value, causing patients to be placed on chronic transfusion therapy who would not have gone on to have a stroke. Hydroxyurea (HU) is replacing chronic transfusion therapy in many institutions for primary stroke prevention, but many sites initiate a "cooling off" period of transfusions prior to initiating HU, and transfusion therapy may be indicated for abnormal TCD velocities in patients already on HU. The pathophysiology of stroke in SCD patients is not completely understood, but vascular remodeling, abnormal cerebral blood flow, and vaso-occlusion all play a role. Plasma levels of Brain derived neurotrophic factor (BDNF), myeloperoxidase (MPO), vascular cell adhesion molecule 1 (VCAM-1) and intercellular adhesion molecule 1 (ICAM-1) have been shown to be associated with high trans-cranial Doppler ultrasound (TCD) velocity in children with SCD; but there is limited data on their potential association with stroke in this population. BDNF is a neurotropin that is responsive to hypoxia and promotes neurogenesis as well as playing a key role in the regulation of the cell survival pathway; myeloperoxidase (MPO) promotes vascular injury by oxygen radical generation, leukocyte/neutrophil recruitment, and oxidative stress; vascular cell adhesion molecule 1 (VCAM-1) is and endothelial adhesion molecule involved in the pathophysiology of vaso-occlusion in SCD through promoting RBC adhesion; and intercellular adhesion molecule 1 (ICAM-1) is expressed on endothelial and immune system cells and is thought to be a ligand for leukocyte adhesion. We hypothesized that BDNF, MPO, VCAM-1 and ICAM-1 may be involved in stroke in SCD, and may be potential biomarkers to be used to assess an individual with SCD's stroke risk in addition to TCD. Methods: We collected plasma samples from the peripheral blood of fifteen SCD patients (HbSS) at the time of either silent cerebral infarct (SCI) or stroke. Stroke (n=8) or SI was confirmed by MRI using diffusion imaging and T2 FLAIR. The cohort included 6 females and 9 males between the ages of 3 and 20 years. Plasma from fifteen age and gender matched control patients with HbSS but had normal MRIs and TCD velocities less than 170 m/s. We measured plasma levels of BDNF, MPO, VCAM-1 and ICAM-1 using antibody immobilized fluorescent beads (Millipore, Billerica, MA) and Luminex xMAP technology (Bio-Rad, Hercules, CA). Student's t-test was used to analyze the difference in plasma levels between the stroke and control groups. Results and Conclusions: BDNF levels were significantly higher in the stroke group than in the control group; 2978.2 ± 960.3 pg/ml compared to 2200.8 ± 758.4 pg/ml, p=0.005. Difference in MPO levels between the two groups approached significance; 36617.2 ± 14828.9 pg/ml compared to 29521.9 ± 7889.6 pg/ml, p=0.07. Difference in VCAM-1 levels also approached significance; 143997.0 ± 9963.8 pg/ml compared to 138126.9 ± 11902.0 pg/ml, p=0.08, but there was no significant difference in ICAM-1 levels. Only BDNF plasma levels positively correlated with the area and volume of the infarct, p=0.009. These results further support the assertion that BDNF is involved in the pathophysiology of cerebrovascular disease in SCD. It is possible that MPO and VCAM-1 may also play a role, and that a significant difference was not found due to sample size limitations. Plasma BDNF levels, and possibly MPO and VCAM-1 plasma levels, have potential as biomarkers for stroke risk to improve the positive predictive value of TCD velocities in patients with SCD, or to assess risk in patients unable to receive TCDs. Disclosures No relevant conflicts of interest to declare.

scholarly journals The Establishment and Characteristics of Rat Model of Atherosclerosis Induced by Hyperuricemia

2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
Zhen Liu ◽  
Tong Chen ◽  
Haitao Niu ◽  
Wei Ren ◽  
Xinde Li ◽  
...  
Keyword(s):  
Uric Acid ◽  
Serum Uric Acid ◽  
Adhesion Molecule ◽  
Rat Model ◽  
Nuclear Antigen ◽  
Intercellular Adhesion Molecule ◽  
Mrna Levels ◽  
Intercellular Adhesion Molecule 1 ◽  
Significant Difference ◽  
Wistar Kyoto

Epidemiological studies have identified hyperuricemia as an independent risk factor for cardiovascular disease. However, the mechanism whereby hyperuricemia causes atherosclerosis remains unclear. The objective of the study was to establish a new rat model of hyperuricemia-induced atherosclerosis. Wistar-Kyoto rats were randomly allocated to either a normal diet (ND), high-fat diet (HFD), or high-adenine diet (HAD), followed by sacrifice 4, 8, or 12 weeks later. Serum uric acid and lipid levels were analyzed, pathologic changes in the aorta were observed by hematoxylin and eosin staining, and mRNA expression was evaluated by quantitative real-time polymerase chain reaction. Serum uric acid and TC were significantly increased in the HAD group at 4 weeks compared with the ND group, but there was no significant difference in serum uric acid between the ND and HFD groups. Aorta calcification occurred earlier and was more severe in the HAD group, compared with the HFD group. Proliferating cell nuclear antigen, monocyte chemotactic factor-1, intercellular adhesion molecule-1, and vascular cell adhesion molecule-1 mRNA levels were increased in the HFD and HAD groups compared with the ND group. This new animal model will be a useful tool for investigating the mechanisms responsible for hyperuricemia-induced atherosclerosis.

Paraoxonase-1 and myeloperoxidase correlate with vascular biomarkers in overweight patients with newly diagnosed untreated hyperlipidaemia

VASA ◽  
2017 ◽  
Vol 46 (5) ◽  
pp. 370-376 ◽  
Author(s):  
Anita Szentpéteri ◽  
Noémi Zsíros ◽  
Viktória E. Varga ◽  
Hajnalka Lőrincz ◽  
Mónika Katkó ◽  
...  
Keyword(s):  
Adhesion Molecule ◽  
Oxidized Ldl ◽  
Vascular Complications ◽  
Cd40 Ligand ◽  
Paraoxonase 1 ◽  
Intercellular Adhesion Molecule ◽  
Pon1 Activity ◽  
Intercellular Adhesion Molecule 1 ◽  
Inflammatory Parameters ◽  
Vascular Biomarkers

Abstract. Background: In hyperlipidaemic state, increased levels of myeloperoxidase (MPO) and decreased paraoxonase-1 (PON1) activity have been reported; however, their relationships with other atherosclerotic biomarkers have not been completely clarified. Patients and methods: Serum concentrations of lipid and inflammatory parameters, MPO levels, and PON1 activities were investigated in 167 untreated hyperlipidaemic patients with and without vascular complications and in 32 healthy controls. Additionally, levels of CD40 ligand (sCD40L) and asymmetric dimethyl arginine (ADMA), soluble intercellular adhesion molecule-1 (sICAM-1), soluble vascular cell adhesion molecule-1, and oxidized LDL were determined. Results: We found elevated C-reactive protein (CRP), ADMA, sCD40L, sICAM-1 concentrations, and higher MPO levels in patients with vascular complications compared to those without. The PON1 arylesterase activity correlated negatively with sCD40L, ADMA, and sICAM-1 levels, respectively. In contrast, MPO concentrations showed positive correlations with sCD40L, ADMA, and sICAM-1 levels, respectively. Conclusions: It can therefore be stated that PON1 activity and MPO level correlate strongly with the vascular biomarkers, highlighting the importance of the HDL-associated pro- and antioxidant enzymes in the development of endothelial dysfunction and atherogenesis.

Control of islet intercellular adhesion molecule-1 expression by interferon-alpha and hypoxia

Diabetes ◽  
1996 ◽  
Vol 45 (10) ◽  
pp. 1336-1343 ◽  
Author(s):  
D. Chakrabarti ◽  
X. Huang ◽  
J. Beck ◽  
J. Henrich ◽  
N. McFarland ◽  
...  
Keyword(s):  
Interferon Alpha ◽  
Adhesion Molecule ◽  
Intercellular Adhesion ◽  
Intercellular Adhesion Molecule ◽  
Intercellular Adhesion Molecule 1
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