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Jiang Y, Liu Z, Liu L, Xiong Z, Chen Y, Zhang S, Su C. Differential expression of serum TM, PAF, and CD62P in patients with autologous arteriovenous fistula and the correlation with vascular access function. Immun Inflamm Dis 2024; 12:e1227. [PMID: 38533915 DOI: 10.1002/iid3.1227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2023] [Revised: 02/16/2024] [Accepted: 03/08/2024] [Indexed: 03/28/2024] Open
Abstract
BACKGROUND End-stage renal disease (ESRD) is the final stage of chronic kidney disease (CKD). AIMS We aimed to analyze the expression differences of serum thrombomodulin (TM), platelet-activating factor (PAF), and P-selectin (CD62P) in patients with autologous arteriovenous fistula (AVF) and the correlation with vascular access function. METHODS The case data were retrospectively analyzed. Moreover, 160 patients with AVF maintenance hemodialysis were selected as the AVF group, and 150 healthy participants were selected as the healthy control group. According to the function of vascular access, patients in the AVF group were divided into Group A (n = 50, after the first establishment of AVF), Group B (n = 64, normal vascular access function after hemodialysis treatment), and Group C (n = 46, vascular access failure). Pearson analysis was conducted to explore the correlation between serum TM, PAF, CD62P content, and vascular pathological examination indicators, to evaluate the value of TM, PAF, and CD62P levels in predicting vascular access failure in patients with AVF. RESULTS AND DISCUSSION The serum levels of TM, PAF, and CD62P were positively correlated with the expressions of CD68 and MCP-1, respectively (p < .001). Serum TM was positively correlated with the levels of PAF and CD62P (p < .001), and PAF was positively correlated with the levels of CD62P (p < .001), respectively. Serum levels of TM, PAF and CD62P were risk factors for vascular access failure in AVF patients (p < .05). The area under the curve of serum TM, PAF and CD62P levels in predicting vascular access failure in AVF patients was 0.879. CONCLUSION The serum levels of TM, PAF, and CD62P in AVF patients were correlated with the vascular access function of AVF patients, which was very important for maintaining the stability of vascular access function, and had certain value in predicting vascular access failure/disorder in AVF patients, and could be popularized and applied.
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Affiliation(s)
- Yan Jiang
- Department of Nephrology, Affiliated Cancer Hospital of Guizhou Medical University, Guiyang, China
| | - Zongyang Liu
- Department of Nephrology, Affiliated Cancer Hospital of Guizhou Medical University, Guiyang, China
| | - Liting Liu
- School of Clinical Medicine, Guizhou Medical University, Guiyang, China
| | - Zhiqian Xiong
- School of Clinical Medicine, Guizhou Medical University, Guiyang, China
| | - Yan Chen
- Department of Nephrology, Affiliated Cancer Hospital of Guizhou Medical University, Guiyang, China
| | - Shuai Zhang
- Department of Interventional Medicine, Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Chaojiang Su
- Department of Nephrology, Affiliated Cancer Hospital of Guizhou Medical University, Guiyang, China
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Hu S, Wang R, Ma T, Lei Q, Yuan F, Zhang Y, Wang D, Cheng J. Association between preoperative C-reactive protein to albumin ratio and late arteriovenous fistula dysfunction in hemodialysis patients: a cohort study. Sci Rep 2023; 13:11184. [PMID: 37433824 DOI: 10.1038/s41598-023-38202-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Accepted: 07/05/2023] [Indexed: 07/13/2023] Open
Abstract
Arteriovenous fistula (AVF) dysfunction is a critical complication in hemodialysis (HD) patients, with inflammation potentially contributing to its development. This retrospective cohort study aimed to investigate the association between preoperative C-reactive protein to albumin ratio (CAR) and AVF dysfunction in Chinese HD patients. A total of 726 adults with end-stage renal disease who underwent new AVF placement between 2011 and 2019 were included. Multivariable Cox regression and Fine and Gray competing risk models were employed to assess the relationship between CAR and AVF dysfunction, considering death and renal transplantation as competing risks. Among 726 HD patients, 29.2% experienced AVF dysfunction during a median follow-up of 36 months. Adjusted analyses revealed that higher CAR levels were associated with an increased risk of AVF dysfunction, with a 27% higher risk per one-unit increase in CAR. Furthermore, patients with CAR values ≥ 0.153 exhibited a 75% elevated risk compared to those with CAR values < 0.035 (P = 0.004). The relationship between CAR and AVF dysfunction varied by the site of internal jugular vein catheter placement (P for trend = 0.011). Notably, the Fine and Gray analysis confirmed the association between CAR and AVF dysfunction, with a 31% increased risk per one-unit increase in CAR. The highest CAR tertile remained an independent predictor of AVF dysfunction (HR = 1.77, 95% CI 1.21-2.58, P = 0.003). These findings highlight the potential of CAR as a prognostic marker for AVF dysfunction in Chinese HD patients. Clinicians should consider CAR levels and catheter placement site when assessing the risk of AVF dysfunction in this population.
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Affiliation(s)
- Shouliang Hu
- Division of Nephrology, The First Hospital of Yangtze University, No.8, Aviation Road, Shashi District, Jingzhou, Hubei, China
| | - Runjing Wang
- Department of Basic Medicine, Xiamen Medical College, Xiamen, China
| | - Tean Ma
- Division of Nephrology, The First Hospital of Yangtze University, No.8, Aviation Road, Shashi District, Jingzhou, Hubei, China
| | - Qingfeng Lei
- Division of Nephrology, The First Hospital of Yangtze University, No.8, Aviation Road, Shashi District, Jingzhou, Hubei, China
| | - Fanli Yuan
- Division of Nephrology, The First Hospital of Yangtze University, No.8, Aviation Road, Shashi District, Jingzhou, Hubei, China
| | - Yong Zhang
- Division of Nephrology, Jianli County People's Hospital, Jingzhou, Hubei, China
| | - Dan Wang
- Central Laboratory, The First Hospital of Yangtze University, Jingzhou, Hubei, China.
| | - Junzhang Cheng
- Division of Nephrology, The First Hospital of Yangtze University, No.8, Aviation Road, Shashi District, Jingzhou, Hubei, China.
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Outcome and Risk Factors of Restenosis Post Percutaneous Transluminal Angioplasty at Juxta-Anastomotic of Wrist Autogenous Radial-Cephalic Arteriovenous Fistulas: A Retrospective Cohort Study. Ann Vasc Surg 2023:S0890-5096(23)00026-2. [PMID: 36720303 DOI: 10.1016/j.avsg.2023.01.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 11/20/2022] [Accepted: 01/09/2023] [Indexed: 01/31/2023]
Abstract
BACKGROUND This retrospective cohort study was to determine the factors related to restenosis post percutaneous transluminal angioplasty (PTA) at juxta-anastomotic of wrist radial-cephalic arteriovenous fistulas (RC-AVFs). METHODS We conducted a retrospective study of patients who underwent their first PTA for juxta-anastomotic stenosis at RC-AVF from January 1, 2016, to December 31, 2020. Patient and stenotic lesion characteristics and PTA procedure factors were included in the analysis. The primary and assisted primary patency post PTA of RC-AVFs were evaluated using the Kaplan-Meier analysis and log-rank test. A Cox proportional hazard model was used to identify factors associated with restenosis post PTA. The receiver operating characteristic (ROC) curve was employed to evaluate the predictive value of the risk factors for restenosis post PTA. RESULTS A total of 65 patients with a mean age of 59.09 ± 14.94 years were enrolled in the study. The mean RC-AVF age was 9.2 (4.9, 35.05) months, and the median time of intervention for stenosis was 10.8 (4.05, 41.35) months after AVF creation. The primary patency rates following the first PTA at 3, 6, 12, and 24 months were 93.9, 84.6, 63.1, and 55.4%, respectively. The assisted primary patency rates at 3, 6, 12, and 24 months were 95.4, 90.8, 87.7, and 84.6%, respectively. Cox proportional hazard regression analysis revealed the maximum balloon diameter >5 mm had a lower postoperative restenosis rate compared with the maximum balloon diameter ≤5 mm (hazard ratio = 0.422; 95% confidence interval [CI]: 0.201-0.884; P = 0.022). ROC curve analysis showed that the area under the curve of the maximum balloon diameter during PTA was 0.624 (95% CI, 0.486-0.762). The best critical value for the maximum balloon diameter was 6 mm, the sensitivity was 64.5%, and the specificity was 61.8%. CONCLUSIONS For the first PTA at juxta-anastomotic of wrist RC-AVFs without thrombosis and complete occlusion, the use of a balloon with a maximum diameter of ≤5 mm is a risk factor to the occurrence of restenosis within 12 months post PTA. The result may help in tailoring surveillance programs in patients with RC-AVF stenosis.
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Hsieh MY, Cheng CH, Chen CH, Liao MT, Lin CC, Yang TF, Chuang SY, Wu CC. The association of long-term blood pressure variability with hemodialysis access thrombosis. Front Cardiovasc Med 2022; 9:881454. [PMID: 35990946 PMCID: PMC9386040 DOI: 10.3389/fcvm.2022.881454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Accepted: 07/18/2022] [Indexed: 11/15/2022] Open
Abstract
Background Blood pressure variability (BPV) is an important risk factor for cardiovascular events in hemodialysis patients. We sought to determine the impact of BPV on hemodialysis access thrombosis. Methods We enrolled 1,011 prevalent hemodialysis patients from 12 hemodialysis centers since January 2018 and followed them until December 2020. Predialysis blood pressure (BP) was assessed at 12-week intervals. The coefficient of variation derived from 36 consecutive BP measurements was used as the metric for variability. The primary outcome was incident hemodialysis access thrombosis. Linear regression models were used to assess factors associated with BPV at baseline. Kaplan-Meier curves of the time until vascular access events were drawn and log-rank tests were calculated. Cox proportional hazards models were performed to assess the association of BPV with incident vascular access events. Results The average coefficient of variance for systolic BPV was 10.9%. BPV was associated with age, body mass index, mean BP, diabetes, coronary and peripheral artery disease, history of access dysfunction, graft access, intradialytic hypotension, and use of antihypertensive medications. There were 194 access thrombosis events and 451 access stenosis events during a median follow-up period of 30 months. After adjustment of potential confounding factors, BPV was associated with increased risk of access thrombosis [hazard ratio = 1.27, 95% confidence interval (CI), 1.18–1.44, per 1 standard deviation increase in BPV]. The patients in the highest BPV quartile had 2.45 times the risk of thrombosis (CI, 1.62–3.70). The association was independent of average BP, intradialytic hypotension, and comorbidities. Similar trends of association were found in the subgroups analyzed. Comparative analysis using a time-varying variable model and different metrics of BPV showed consistent results. Conclusion Our findings underscored the impact of BP fluctuation on vascular access thrombosis.
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Affiliation(s)
- Mu-Yang Hsieh
- Division of Cardiology, Department of Internal Medicine, National Taiwan University Hospital Hsinchu Branch, Hsinchu, Taiwan
- College of Medicine, National Taiwan University, Taipei, Taiwan
- Department of Biological Science and Technology, National Yang Ming Chiao Tung University, Hsinchu, Taiwan
| | | | - Chiu-Hui Chen
- Hemodialysis Center, National Taiwan University Hospital Hsinchu Branch, Hsinchu, Taiwan
| | - Min-Tsun Liao
- Division of Cardiology, Department of Internal Medicine, National Taiwan University Hospital Hsinchu Branch, Hsinchu, Taiwan
- College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Chih-Ching Lin
- School of Medicine, National Yang Ming Chiao Tung University, Hsinchu, Taiwan
- School of Medicine, National Yang-Ming University, Taipei, Taiwan
- Division of Nephrology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Ten-Fang Yang
- Department of Biological Science and Technology, National Yang Ming Chiao Tung University, Hsinchu, Taiwan
| | - Shao-Yuan Chuang
- Institute of Population Health Science, National Health Research Institutes, Miaoli County, Taiwan
| | - Chih-Cheng Wu
- College of Medicine, National Taiwan University, Taipei, Taiwan
- Center of Quality Management, National Taiwan University Hospital Hsinchu Branch, Hsinchu, Taiwan
- Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu, Taiwan
- Institute of Cellular and System Medicine, National Health Research Institutes, Miaoli County, Taiwan
- *Correspondence: Chih-Cheng Wu,
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Hakki S, Robinson EJ, Robson MG. Circulating Interleukin-6 and CD16 positive monocytes increase following angioplasty of an arteriovenous fistula. Sci Rep 2022; 12:1427. [PMID: 35082332 PMCID: PMC8792046 DOI: 10.1038/s41598-022-05062-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Accepted: 12/28/2021] [Indexed: 11/08/2022] Open
Abstract
Arteriovenous fistulas are the ideal form of vascular access that allows provision of haemodialysis. Stenotic lesions caused by neointimal hyperplasia commonly occur resulting in patients requiring a fistuloplasty. This is effective but there is a high recurrence rate. We sought to investigate the effects of a fistuloplasty on monocyte populations. Blood samples were taken from patients before and after their fistuloplasty procedure. Samples were analysed using flow cytometry, ELISA and Luminex assays. Univariate cox regression was carried out to investigate associations with post fistuloplasty patency. At 1-2 days post fistuloplasty, the proportion of classical (CD14++CD16-) monocytes decreased (p < 0.001), whilst intermediate (CD14++CD16+) and non-classical (CD14+CD16+) monocytes increased (both p < 0.01) in a cohort of 20 patients. A time course study carried out in 5 patients showed that this was due to an increase in absolute numbers of non-classical and intermediate monocytes. Higher levels of non-classical monocytes pre-fistuloplasty were associated with an increased risk for patency loss (p < 0.05). We measured 41 soluble factors in plasma samples taken before a fistuloplasty in 54 patients, with paired post-fistuloplasty samples (1-2 days) available in 30 patients. After correcting for false discovery, the only factor with a significant change in level was IL-6 (P = 0.0003, q = 0.0124). In a further time-course study in 6 patients, peak level of IL-6 occurred 2-3 h post fistuloplasty. This study demonstrates that there is a systemic inflammatory response to the fistuloplasty procedure and that monocyte subsets and IL-6 may be important in the pathophysiology of restenosis.
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Affiliation(s)
- Seran Hakki
- School of Immunology and Microbial Sciences, Faculty of Life Sciences and Medicine, King's College London, Guy's Hospital, London, SE1 9RT, UK
| | - Emily J Robinson
- School of Population Health and Environmental Sciences, Faculty of Life Sciences and Medicine, King's College London, London, UK
| | - Michael G Robson
- School of Immunology and Microbial Sciences, Faculty of Life Sciences and Medicine, King's College London, Guy's Hospital, London, SE1 9RT, UK.
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Chen CH, Hsieh YL, Chuang SY, Su FY, Wang KT, Luo CM, Meng SW, Wu CC. The Impact of Frailty on the Outcomes of Hemodialysis Vascular Access. ACTA CARDIOLOGICA SINICA 2022; 38:29-38. [PMID: 35068881 PMCID: PMC8743470 DOI: 10.6515/acs.202201_38(1).20210711a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Accepted: 07/11/2021] [Indexed: 06/14/2023]
Abstract
BACKGROUND Frailty has been associated with mortality and adverse cardiovascular outcomes in patients with hemodialysis (HD), however the relevance of frailty on the outcomes of HD vascular access remains unclear. METHODS We enrolled a cohort of patients with prevalent HD between August 2018 and November 2018. The presence of 5 frailty phenotypes was determined at enrollment, using the modified Fried's criteria. Data regarding vascular access events or mortality were linked to prospectively collected data up to 24 months after enrollment. RESULTS Of the 382 patients screened, 313 were recruited in the final analysis. The participants' mean age was 66 years, and 42.5% were female. Among all participants, 40.3% were determined to be frail and 29.4% pre-frail. The frail phenotype was associated with age, female gender, lower body mass index, unemployment, lower education level, and higher dialysis clearance. During the follow-up period (median, 24 months), 112 patients had vascular access events (non-frail, 27.4%; pre-frail, 35.9%; frail, 46.1%; p = 0.003) and 45 patients experienced thrombosis of the vascular access (non-frail, 4.2%; pre-frail, 9.8%; frail, 18.3%; p = 0.002). Cox regression analysis showed that frail patients had a 2.2-fold higher risk of experiencing vascular access events than non-frail patients [hazard ratio (HR): 2.205, 95% confidence interval (CI): 1.377-3.532, p = 0.001], but the association was not significant (HR: 1.634, 95% CI: 0.938-2.848, p = 0.082) after multivariate adjustment. CONCLUSIONS The frail phenotype is common in Taiwanese patients who undergo maintenance HD and is associated with adverse outcomes of dialysis vascular access.
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Affiliation(s)
| | - Yu-Ling Hsieh
- Department of Nursing, National Taiwan University Hospital, Hsin-Chu Branch, Hsinchu
| | - Shao-Yuan Chuang
- Institute of Population Health Science, National Health Research Institutes, Zhunan
| | | | | | - Chien-Ming Luo
- Department of Surgery, Division of Cardiovascular Surgery, National Taiwan University Hospital, Hsin-Chu Branch, Hsinchu
- College of Medicine, National Taiwan University, Taipei
| | | | - Chih-Cheng Wu
- College of Medicine, National Taiwan University, Taipei
- Quality Control Center, National Taiwan University Hospital, Hsin-Chu Branch
- Institute of Biomedical Engineering, National Tsing-Hua University, Hsinchu
- Institute of Cellular and System Medicine, National Health Research Institutes, Zhunan, Taiwan
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Hu S, Wang D, Ma T, Yuan F, Zhang Y, Gao X, Lei Q, Cheng J. Association between Preoperative Monocyte-to-Lymphocyte Ratio and Late Arteriovenous Fistula Dysfunction in Hemodialysis Patients: A Cohort Study. Am J Nephrol 2021; 52:854-860. [PMID: 34749361 DOI: 10.1159/000519822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Accepted: 09/15/2021] [Indexed: 11/19/2022]
Abstract
BACKGROUND Inflammation appears to be at the biological core of arteriovenous fistula (AVF) dysfunction, and the occurrence of AVF dysfunction is related to high death and disability in hemodialysis (HD) patients. Despite several studies on the correlations between AVF dysfunction and inflammatory indicators, how AVF dysfunction is related to the monocyte-to-lymphocyte ratio (MLR) is much unclear. We hypothesize that preoperative MLR is associated with AVF dysfunction in Chinese HD patients. METHODS In this single-center retrospective cohort study, totally 769 adult HD patients with a new AVF created between 2011 and 2019 were included. Association of preoperative MLR with AVF dysfunction (thrombosis or decrease of normal vessel diameter by >50%, requiring either surgical revision or percutaneous transluminal angioplasty) was assessed by multivariable Cox proportional hazard regression. RESULTS The patients were aged 55.8 ± 12.2 years and were mostly males (55%). During the average 32-month follow-up (maximum 119 months), 223 (29.0%) patients had permanent vascular access dysfunction. In adjusted multivariable Cox proportional hazard regression analyses, the risk of AVF dysfunction was 4.32 times higher with 1 unit increase in MLR (hazard ratio [HR]: 5.32; 95% confidence interval [CI]: 3.1-9.11). Compared with patients with MLR <0.28, HRs associated with an MLR of 0.28-0.41 and ≥0.41 are 1.54 (95% CI: 1.02-2.32) and 3.17 (2.18-4.62), respectively. CONCLUSIONS A higher preoperative MLR is independently connected with a severer risk of AVF dysfunction in HD patients. Its clinical value should be determined in the future.
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Affiliation(s)
- Shouliang Hu
- Division of Nephrology, The First Hospital of Yangtze University, Jingzhou, China,
| | - Dan Wang
- Central Laboratory, The First Hospital of Yangtze University, Jingzhou, China
| | - Tean Ma
- Division of Nephrology, The First Hospital of Yangtze University, Jingzhou, China
| | - Fanli Yuan
- Division of Nephrology, The First Hospital of Yangtze University, Jingzhou, China
| | - Yong Zhang
- Division of Nephrology, Jianli County People's Hospital, Jingzhou, China
| | - Xiaoli Gao
- Division of Nephrology, The First Hospital of Yangtze University, Jingzhou, China
| | - Qingfeng Lei
- Division of Nephrology, The First Hospital of Yangtze University, Jingzhou, China
| | - Junzhang Cheng
- Division of Nephrology, The First Hospital of Yangtze University, Jingzhou, China
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Zhu F, Yao Y, Ci H, Shawuti A. Predictive value of neutrophil-to-lymphocyte ratio and platelet-to-lymphocyte ratio for primary patency of percutaneous transluminal angioplasty in hemodialysis arteriovenous fistula stenosis. Vascular 2021; 30:920-927. [PMID: 34412532 DOI: 10.1177/17085381211039672] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVE The aim of this study is to investigate the potential association of the neutrophil-to-lymphocyte ratio (NLR) and platelet-to-lymphocyte ratio (PLR) with the primary patency of percutaneous transluminal angioplasty (PTA) in hemodialysis arteriovenous fistula (AVF) stenosis. METHODS This study conducted a retrospective review of patients with end-stage renal disease referred for hemodialysis AVF stenosis in one center. The study consisted of 114 patients with significant (significant stenosis was defined as a reduction in the caliber of the fistula vein of > 50% with respect to the non-aneurysmal venous segment). AVF stenosis patients were treated with PTA, with conventional balloon angioplasty. The NLR and PLR were calculated from the pre-interventional blood samples. The patients were classified into two groups: group A, primary patency < 12 months (n = 35) and group B, and primary patency ≥ 12 months (n = 79). Comparisons between the groups were performed using the Mann-Whitney U test. Kaplan-Meier analysis was performed to compare the factors, NLR and PLR, for association with primary patency AVFs. A receiver-operating characteristic curve analysis was performed to identify the sensitivity and specificity of the NLR and PLR cut-off values in the prediction of primary patency time. RESULTS There was no difference in gender; age; side of AVF; AVF type; comorbid diseases such as diabetes mellitus and hypertension; or blood parameters such as white cell count, erythrocytes, hemoglobin, neutrophils, lymphocytes, monocytes, eosinophils, basophils, C-reactive protein, NLR, or PLR between the two groups (p > 0.05). There was also no significant difference in the patency rate between the NLR < 4.13 and NLR ≥ 4.13 groups at 12 months (NLR cut-off point = 4.13, p = 0.273). There were statistically significant differences between the primary patency rates of the PLR < 187.86 and PLR ≥ 187.86 groups at 12 months (PLR cut-off point = 187.86, p = 0.023). The cut-off value for PLR for the determination of primary patency was 187.86, with a sensitivity of 57.0% and specificity of 34.4%. CONCLUSION An increased level of PLR may be a risk factor for the development of early AVF restenosis after successful PTA. However, more studies are needed to validate this finding.
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Affiliation(s)
- Feng Zhu
- Department of Vascular Surgery, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi, China
| | - Yao Yao
- Department of Orthopedics, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi, China
| | - Hongbo Ci
- Department of Vascular Surgery, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi, China
| | - Alimujiang Shawuti
- Department of Vascular Surgery, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi, China
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Oral Charcoal Adsorbents Attenuate Neointima Formation of Arteriovenous Fistulas. Toxins (Basel) 2020; 12:toxins12040237. [PMID: 32276394 PMCID: PMC7232464 DOI: 10.3390/toxins12040237] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2020] [Revised: 03/31/2020] [Accepted: 04/05/2020] [Indexed: 12/11/2022] Open
Abstract
Chronic kidney disease (CKD) accelerates the development of neointima formation at the anastomosis site of arteriovenous (AV) fistulas. Accumulation of certain uremic toxins has a deleterious effect on the cardiovascular system. The oral charcoal adsorbent, AST-120, reduces circulating and tissue uremic toxins, but its effect on neointima formation at an AV fistula is unknown. To understand the effect of CKD and AST-120 on neointima formation, we created AV fistulas (common carotid artery to the external jugular vein in an end-to-side anastomosis) in mice with and without CKD. AST-120 was administered in chow before and after AV fistula creation. Administration of AST-120 significantly decreased serum indoxyl sulfate levels in CKD mice. CKD mice had a larger neointima area than non-CKD mice, and administration of AST-120 in CKD mice attenuated neointima formation. Both smooth muscle cell and fibrin components were increased in CKD mice, and AST-120 decreased both. RNA expression of MMP-2, MMP-9, TNFα, and TGFβ was increased in neointima tissue of CKD mice, and AST-120 administration neutralized the expression. Our results provided in vivo evidence to support the role of uremic toxin-binding therapy on the prevention of neointima formation. Peri-operative AST-120 administration deserves further investigation as a potential therapy to improve AV fistula patency.
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A randomized feasibility study of the effect of ascorbic acid on post-angioplasty restenosis of hemodialysis vascular access (NCT03524846). Sci Rep 2019; 9:11095. [PMID: 31366980 PMCID: PMC6668477 DOI: 10.1038/s41598-019-47583-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Accepted: 07/16/2019] [Indexed: 12/16/2022] Open
Abstract
Restenosis remains a significant problem after angioplasty of hemodialysis vascular access. Both experimental and clinical studies have shown a protective effect of antioxidants against post-angioplasty restenosis. A prospective, randomized, feasibility study was conducted to investigate the effect of ascorbic acid to prevent restenosis. Ninety-three hemodialysis patients were randomized into three groups after angioplasty: placebo (n = 31), 300 mg ascorbic acid (n = 31), and 600 mg ascorbic acid (n = 31), treated intravenously 3 times per week for 3 months. Eighty-nine completed the clinical follow-up, and 81 had angiographic follow-up. In the angiographic follow-up, the mean (stand deviation) late loss of luminal diameter for the placebo, 300 mg, and 600 mg groups were 3.15 (1.68) mm, 2.52 (1.70) mm (P = 0.39 vs. placebo group), and 1.59 (1.67) mm (P = 0.006, vs. placebo group), with corresponding angiographic binary restenosis of 79%, 67% (P = 0.38 vs. placebo group), and 54% (P = 0.08 vs. placebo group). The post-interventional primary patency rates at 3 months were 47%, 55% (P = 0.59 vs. placebo group), and 70% (P = 0.18 vs. placebo group) for placebo, 300 mg, and 600 mg groups. Our results demonstrated that intravenous 600 mg ascorbic acid was a feasible therapy and might attenuate restenosis after angioplasty; however, its effect on post-interventional primary patency was modest.
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Gameiro J, Ibeas J. Factors affecting arteriovenous fistula dysfunction: A narrative review. J Vasc Access 2019; 21:134-147. [PMID: 31113281 DOI: 10.1177/1129729819845562] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Vascular access dysfunction is one of the most important causes of morbidity and mortality in haemodialysis patients, contributing to up to one third of hospitalisations and accounting for a significant amount of the health care costs of these patients. In the past decades, significant scientific advances in understanding mechanisms of arteriovenous fistula maturation and failure have contributed to an increase in the amount of research into techniques for creation and strategies for arteriovenous fistula dysfunction prevention and treatment, in order to improve patient care and outcomes. The aim of this review is to describe the pathogenesis of vascular access failure and provide a comprehensive analysis of the associated risk factors and causes of vascular access failure, in order to interpret possible future therapeutic approaches. Arteriovenous fistula failure is a multifactorial process resulting from the combination of upstream and downstream events with consequent venous neo-intimal hyperplasia and/or inadequate outward remodelling. Inflammation appears to be central in the biology of arteriovenous fistula dysfunction but important triggers still need to be revealed. Given the significant association of arteriovenous fistula failure and patient's prognosis, it is therefore imperative to further research in this area in order to improve prevention, surveillance and treatment, and ultimately patient care and outcomes.
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Affiliation(s)
- Joana Gameiro
- Division of Nephrology and Renal Transplantation, Department of Medicine, Centro Hospitalar Lisboa Norte, EPE, Lisboa, Portugal
| | - Jose Ibeas
- Nephrology Department, Parc Taulí Hospital Universitari, Institut d'Investigació i Innovació Parc Taulí I3PT, Universitat Autònoma de Barcelona, Sabadell, Spain
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Wu CC, Chen LJ, Hsieh MY, Lo CM, Lin MH, Tsai HE, Song HL, Chiu JJ. MicroRNA-21 and Venous Neointimal Hyperplasia of Dialysis Vascular Access. Clin J Am Soc Nephrol 2018; 13:1712-1720. [PMID: 30242025 PMCID: PMC6237050 DOI: 10.2215/cjn.02410218] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Accepted: 08/08/2018] [Indexed: 11/23/2022]
Abstract
BACKGROUND AND OBJECTIVES There is increasing evidence that microRNAs (miRNAs) play crucial roles in the regulation of neointima formation. However, the translational evidence of the role of miRNAs in dialysis vascular access is limited. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS miRNA expression in tissues was assessed by using venous tissues harvested from ten patients on dialysis who received revision or removal surgery, and ten patients who were predialysis and received creation surgery of arteriovenous fistulas served as controls. To extend these findings, 60 patients who received angioplasty of dialysis access were enrolled and the levels of circulating miRNAs were determined before and 2 days after angioplasty. Clinical follow-up was continued monthly for 6 months. The primary outcome of angioplasty cohort was target lesion restenosis within 6 months after angioplasty. RESULTS In the surgery cohort, the expressions of miR-21, miR-130a, and miR-221 were upregulated in stenotic tissues, whereas those of miR-133 and miR-145 were downregulated. In situ hybridization revealed similar expression patterns of these miRNAs, localized predominantly in the neointima region. Twenty eight patients in the angioplasty cohort developed restenosis within 6 months. The levels of circulating miR-21, miR-130a, miR-221, miR-133, and miR-145 significantly increased 2 days after angioplasty. Kaplan-Meier plots showed that patients with an increase of miR-21 expression level >0.35 have a higher risk of patency loss (hazard ratio, 4.45; 95% confidence interval, 1.68 to 11.7). In a multivariable analysis, postangioplasty increase of miR-21 expression was independently associated with restenosis (hazard ratio, 1.20; 95% confidence interval, 1.07 to 1.35 per one unit increase of miR-21 expression level; P=0.001). CONCLUSIONS Certain miRNAs are differentially expressed in the stenotic venous segments of dialysis accesses. An increase in blood miR-21 level with angioplasty is associated with a higher risk of restenosis.
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Affiliation(s)
- Chih-Cheng Wu
- Cardiovascular Center
- College of Medicine and
- Institute of Biomedical Engineering, National Tsing-Hua University, Hsinchu, Taiwan
| | - Li-Jing Chen
- Institute of Cellular and System Medicine, National Health Research Institutes, Miaoli, Taiwan; and
| | | | - Chien-Ming Lo
- Division of Cardiovascular Surgery, Department of Surgery, and
| | - Ming-Hsien Lin
- Division of Cardiovascular Surgery, Department of Surgery, and
| | - Hsiao-En Tsai
- Division of Cardiovascular Surgery, Department of Surgery, and
| | - Hsiang-Lin Song
- Department of Surgical Pathology, National Taiwan University Hospital, Hsinchu Branch, Hsinchu, Taiwan
| | - Jeng-Jiann Chiu
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei, Taiwan
- Institute of Biomedical Engineering, National Tsing-Hua University, Hsinchu, Taiwan
- Institute of Cellular and System Medicine, National Health Research Institutes, Miaoli, Taiwan; and
- College of Pharmacy, Taipei Medical University, Taipei, Taiwan
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