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Li P, Li Q, Tang M, Hu X, Tian J, Zhang J, Yang C, Zhu B. Associations of phosphorus concentrations with medial arterial calcification in lower-extremity arteries and diabetic foot in people with diabetes: a retrospective cross-sectional study. Cardiovasc Diabetol 2024; 23:275. [PMID: 39061014 PMCID: PMC11282733 DOI: 10.1186/s12933-024-02361-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/14/2024] [Accepted: 07/15/2024] [Indexed: 07/28/2024] Open
Abstract
BACKGROUND The aim of this study was to investigate the associations of blood phosphorus levels with the risk of developing medial arterial calcification (MAC) in lower-limb arteries and diabetic foot (DF) in diabetes patients. We sought to enhance the understanding of the pathophysiology of diabetic complications and develop strategies to mitigate diabetes-related risks. METHODS We conducted a retrospective analysis of 701 diabetic patients from the Department of Endocrinology at Sun Yat-Sen Memorial Hospital (2019-2023). We utilized multimodel-adjusted logistic regression to investigate the associations of serum phosphorus levels and the risk of developing MAC and DF. Restricted cubic spline plots were employed to model the relationships, and threshold analysis was used to identify inflection points. Subgroup analyses were performed to explore variations across different demographics. The diagnostic utility of phosphorus concentrations was assessed via the C index, net reclassification improvement (NRI), and integrated discrimination improvement (IDI). RESULTS Of the 701 patients (mean age 63.9 years; 401 (57.20%) were male), 333 (47.50%) had MAC, and 329 (46.93%) had DF. After controlling for numerous confounding variables, each one-unit increase in phosphorus concentrations was associated with an increased risk of developing MAC (OR 2.65, 95% CI 1.97-3.57, p < 0.001) and DF (OR 1.54, 95% CI 1.09-2.18, p = 0.014). Phosphorus levels demonstrated a linear risk association, with risk not being uniform on either side of the inflection point, which was approximately 3.28 mg/dL for MAC and varied for DF (3.26 to 3.81 mg/dL). Adding the phosphorus as an independent component to the diagnostic model for MAC and DF increased the C index, NRI, and IDI to varying degrees. CONCLUSIONS Elevated serum phosphorus levels are significantly associated with an increased risk of developing MAC and DF among diabetic people. These findings suggest that phosphorus management could be integrated into routine diagnostic processes to improve the identification and management of lower-extremity diabetic complications.
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Affiliation(s)
- Peishan Li
- Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
| | - Qingxian Li
- Shenzhen Longhua District Central Hospital, Shenzhen, 518110, China
| | - Mingyu Tang
- Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
| | - Xingyun Hu
- Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
| | - Jing Tian
- Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
| | - Jianbin Zhang
- Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
| | - Chuan Yang
- Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China.
| | - Baile Zhu
- Zhongshan People's Hospital, Zhongshan, 528403, China.
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Tan TW, Caldwell B, Zhang Y, Kshirsagar O, Cotter DJ, Brewer TW. Foot and Ankle Care by Podiatrists and Amputations in Patients With Diabetes and Kidney Failure. JAMA Netw Open 2024; 7:e240801. [PMID: 38427353 PMCID: PMC10907919 DOI: 10.1001/jamanetworkopen.2024.0801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Accepted: 01/11/2024] [Indexed: 03/02/2024] Open
Abstract
Importance Patients with kidney failure have an increased risk of diabetes-related foot complications. The benefit of regular foot and ankle care in this at-risk population is unknown. Objective To investigate foot and ankle care by podiatrists and the outcomes of diabetic foot ulcers (DFUs) in patients with kidney failure. Design, Setting, and Participants This retrospective cohort study included Medicare beneficiaries with type 2 diabetes receiving dialysis who had a new DFU diagnosis. The analysis of the calendar year 2016 to 2019 data from the United States Renal Data System was performed on June 15, 2023, with subsequent updates on December 11, 2023. Exposures Foot and ankle care by podiatrists during 3 months prior to DFU diagnosis. Main Outcomes and Measures The outcomes were a composite of death and/or major amputation, as well as major amputation alone. Kaplan-Meier analysis was used to estimate 2 to 3 years of amputation-free survival. Foot and ankle care by podiatrists and the composite outcome was examined using inverse probability-weighted Cox regression, while competing risk regression models were used for the analysis of amputation alone. Results Among the 14 935 adult patients with kidney failure and a new DFU (mean [SD] age, 59.3 [12.7] years; 35.4% aged ≥65 years; 8284 men [55.4%]; Asian, 2.7%; Black/African American, 35.0%; Hispanic, 17.7%; White, 58.5%), 18.4% (n = 2736) received care by podiatrists in the 3 months before index DFU diagnosis. These patients were older, more likely to be male, and have more comorbidities than those without prior podiatrist visits. Over a mean (SD) 13.5 (12.0)-month follow-up, 70% of those with podiatric care experienced death and/or major amputation, compared with 74% in the nonpodiatric group. Survival probabilities at 36 months were 26.3% vs 22.8% (P < .001, unadjusted Kaplan-Meier survival analysis). In multivariate regression analysis, foot and ankle care was associated with an 11% lower likelihood of death and/or amputation (hazard ratio [HR], 0.89 95% CI, 0.84-0.93) and a 9% lower likelihood of major amputation (above or below knee) (HR, 0.91; 95% CI, 0.84-0.99) than those who did not. Conclusions and Relevance The findings of this study suggest that patients with kidney failure at risk for DFUs who receive foot and ankle care from podiatrists may be associated with a reduced likelihood of diabetes-related amputations.
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Affiliation(s)
- Tze-Woei Tan
- Keck School of Medicine of University of Southern California, Los Angeles
| | - Bryan Caldwell
- Kent State University College of Podiatric Medicine, Independence, Ohio
| | - Yi Zhang
- Medical Technology and Practice Patterns Institute, Bethesda, Maryland
| | - Onkar Kshirsagar
- Medical Technology and Practice Patterns Institute, Bethesda, Maryland
| | - Dennis J. Cotter
- Medical Technology and Practice Patterns Institute, Bethesda, Maryland
| | - Thomas W. Brewer
- Kent State University College of Podiatric Medicine, Independence, Ohio
- Kent State University College of Public Health, Kent, Ohio
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Yan S, Yao D, Wang Y, Zhang J. Risk factors of foot ulcers in patients with end-stage renal disease on dialysis: A meta-analysis. Int Wound J 2024; 21:e14348. [PMID: 37667546 PMCID: PMC10782048 DOI: 10.1111/iwj.14348] [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: 07/05/2023] [Revised: 07/27/2023] [Accepted: 07/29/2023] [Indexed: 09/06/2023] Open
Abstract
The present study aims to assess the risk factors for foot ulcers in patients undergoing dialysis for end-stage renal disease (ESRD) and to provide evidence-based guidance for prevention and treatment. A systematic search was conducted on PubMed, EMBASE, Cochrane Library, China National Knowledge Infrastructure, Chinese Biomedical Literature Database and Wanfang Data from the database inception until May 2023 to identify relevant studies investigating the risk factors for foot ulcers in dialysis patients with ESRD. Two independent researchers conducted the literature screening and data extraction. The meta-analysis was performed using STATA 17.0 software. Ultimately, six articles comprising 1620 patients were included for analysis. The meta-analysis revealed that male (OR, 1.464; 95% CI: 1.082-1.980, p = 0.013), hypertension (OR, 1.781; 95% CI: 1.293-2.4550, p < 0.001), peripheral artery disease (PAD) (OR, 5.014; 95% CI: 2.514-9.998, p < 0.001), type 1 diabetes mellitus (T1DM) (OR, 2.993; 95% CI: 1.477-6.065, p = 0.002) and type 2 diabetes mellitus (T2DM) (OR, 2.498; 95% CI:1.466-4.256, p = 0.001) were risk factors for foot ulcers in dialysis patients with ESRD. Conversely, the female sex (OR, 0.683; 95% CI: 0.505-0.924, p = 0.013) was a protective factor against foot ulcers. Our analysis revealed that male sex, hypertension, PAD, T1DM and T2DM were risk factors for foot ulcers in patients undergoing dialysis for ESRD. Conversely, the female sex was a protective factor against foot ulcers. Therefore, it is crucial to strengthen health education that targets patients with these risk factors and regularly screen high-risk individuals. Early detection and treatment can help delay disease progression.
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Affiliation(s)
- Shanshan Yan
- Department of NephrologyFourth Medical Center of Chinese PLA General HospitalBeijingChina
| | - Dongfang Yao
- Department of Emergency MedicineFourth Medical Center of Chinese PLA General HospitalBeijingChina
| | - Ya Wang
- Department of NephrologyFourth Medical Center of Chinese PLA General HospitalBeijingChina
| | - Jian Zhang
- Department of NephrologyFirst Medical Center of Chinese PLA General HospitalBeijingChina
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Manewell SM, Rao P, Haneman K, Zheng M, Charaf H, Menz HB, Sherrington C, Paul SS. Prevention and management of foot and lower limb health complications in adults undergoing dialysis: a scoping review. J Foot Ankle Res 2023; 16:81. [PMID: 37986004 PMCID: PMC10659051 DOI: 10.1186/s13047-023-00679-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Accepted: 10/30/2023] [Indexed: 11/22/2023] Open
Abstract
BACKGROUND Foot and lower limb health complications are common among patients undergoing dialysis; but a summary of prevention and management evidence is not available. The aim of this scoping review was to summarise study characteristics and the nature of results regarding strategies to prevent and manage peripheral arterial disease (PAD), foot ulceration, amputation, associated infection and associated hospital admission in adults undergoing dialysis. METHODS MEDLINE, Embase, CINAHL and AMED databases were searched for longitudinal experimental and observational studies. Eligible studies included adults undergoing dialysis (≥10 dialysis patients, with separate results or ≥ 75% of the cohort). Any interventions relating to PAD, foot ulceration, amputation, associated infection, and associated hospital admission were included. RESULTS The review included 212 studies, of which 199 were observational (94%) and 13 were experimental (6%). Sixteen studies (8%) addressed the prevention of foot and lower limb health complications, 43 (20%) addressed management, and 153 (72%) addressed both. The main intervention type in each study was surgery (n = 159, 75%), care from one or more health professionals (n = 13, 6%), screening by a health professional (n = 10, 5%), medication (n = 9, 4%) and rehabilitation (n = 5, 2%). No studies were identified where exercise, offloading or education were the main intervention. Results for PAD were reported in 137 (65%) studies, foot ulceration in 54 (25%), amputation in 171 (81%), infection in 7 (3%), and admission in 26 studies (12%). Results for more than one foot or lower limb outcome were reported in 141 studies (67%), with each study reporting on average two outcomes. Results varied and spanned positive, negative, and neutral outcomes following intervention. CONCLUSIONS Identified studies frequently aimed to both prevent and manage foot and lower limb health complications. A variety of interventions were identified and studies often reported results for more than one foot or lower limb health outcome. Findings from this review can be used to guide future research, with a goal to support improved patient outcomes.
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Affiliation(s)
- Sarah M Manewell
- School of Health Sciences, Faculty of Medicine and Health, The University of Sydney, NSW, Camperdown, Australia.
- Podiatry Department, Sydney Local Health District, NSW Health, Camperdown, Australia.
| | - Purnima Rao
- Podiatry Department, Sydney Local Health District, NSW Health, Camperdown, Australia
| | - Keren Haneman
- Podiatry Department, Sydney Local Health District, NSW Health, Camperdown, Australia
| | - Minjia Zheng
- School of Public Health, Faculty of Medicine and Health, The University of Sydney, NSW, Camperdown, Australia
| | - Hady Charaf
- Faculty of Podiatric Medicine, School of Health Sciences, Western Sydney University, NSW, Campbelltown, Australia
| | - Hylton B Menz
- School of Allied Health, Human Services and Sport, La Trobe University, Melbourne, Victoria, Australia
| | - Cathie Sherrington
- Institute for Musculoskeletal Health, Faculty of Medicine and Health, The University of Sydney/Sydney Local Health District, NSW, Camperdown, Australia
| | - Serene S Paul
- School of Health Sciences, Faculty of Medicine and Health, The University of Sydney, NSW, Camperdown, Australia
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Chen ZY, Yang J, Tian CY, Jia W. The Relationship Between Bone Metabolism and Peripheral Artery Disease in Patients on Hemodialysis: The Potential Role of Osteocalcin. Diabetes Metab Syndr Obes 2023; 16:3331-3337. [PMID: 37908632 PMCID: PMC10614643 DOI: 10.2147/dmso.s432345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Accepted: 10/10/2023] [Indexed: 11/02/2023] Open
Abstract
Introduction To examine the factors associated with PAD, with a specific focus on bone metabolism factors such as osteocalcin. Methods This cross-sectional study examined factors about demographic, clinical, and laboratory parameters including bone metabolism biomarkers in hemodialysis patients. The ankle-brachial index (ABI) was measured in all patients, with PAD diagnosed as an ABI <0.9. Results Out of the 71 patients, PAD was found in 23 individuals. These patients had an average age of 63.5±13.0 years, with 59.2% being male. Compared to non-PAD patients, those with PAD were older, had a lower proportion of males, and had a higher prevalence of diabetes and coronary artery disease. Among the factors related to bone metabolism, only osteocalcin exhibited a significant increase in the PAD group compared to the non-PAD group. Conclusion PAD in patients on hemodialysis was independently linked to high levels of osteocalcin in the bloodstream, indicating the presence of bone metabolism disorders.
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Affiliation(s)
- Zi-Ye Chen
- Department of Nephrology, Beijing Jishuitan Hospital, Capital Medical University, Beijing, People’s Republic of China
| | - Jie Yang
- Department of Nephrology, Beijing Jishuitan Hospital, Capital Medical University, Beijing, People’s Republic of China
| | - Chen-Yang Tian
- Department of Vascular Surgery, Beijing Jishuitan Hospital, Capital Medical University, Beijing, People’s Republic of China
| | - Wei Jia
- Department of Vascular Surgery, Beijing Jishuitan Hospital, Capital Medical University, Beijing, People’s Republic of China
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Seo MJ, Lee DG, Ko SY, Song GY, Lee GY, Kim SH, Kang DR, Kim J, Lee JY. Risk Factors for Lower Extremity Amputation in Patients with End-Stage Kidney Disease: A Nationwide Cohort Study. J Clin Med 2023; 12:5641. [PMID: 37685708 PMCID: PMC10488883 DOI: 10.3390/jcm12175641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 08/25/2023] [Accepted: 08/28/2023] [Indexed: 09/10/2023] Open
Abstract
Individuals with end-stage kidney disease (ESKD) on dialysis are at a high risk of developing foot ulcerations and undergoing subsequent lower extremity amputation (LEA), which can exert significant impacts on their quality of life and contribute to rising healthcare costs. We aimed to identify risk factors associated with LEA in patients with ESKD to predict LEA progression and eventually prevent it. We used 18 years (2002-2019) of data from the Korean National Health Insurance Service (KNHIS). Data were collected from patients with ESKD who underwent renal replacement therapy (RRT) and had no history of amputation caused by trauma or toxins. The risk factors were compared between patients with or without LEA. We collected data from 220,838 patients newly diagnosed with ESKD, including 6348 in the LEA group and 214,490 in the non-LEA group. The total incidence of LEA was 2.9%. Older age, male gender, lower income, non-metropolitan residence, diabetes mellitus, dialysis treatment (compared to kidney transplantation), microvascular disease, peripheral vascular disease, endovascular procedure, and endovascular operation were associated with an increased risk of LEA. Thus, individuals with ESKD who are at a higher risk for LEA should be closely monitored, and kidney transplantation should be considered as a preventative measure.
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Affiliation(s)
- Min Jun Seo
- Department of Plastic Surgery, Yonsei University Wonju College of Medicine, Wonju 26426, Republic of Korea; (M.J.S.); (D.G.L.)
| | - Dong Geon Lee
- Department of Plastic Surgery, Yonsei University Wonju College of Medicine, Wonju 26426, Republic of Korea; (M.J.S.); (D.G.L.)
| | - Se Yun Ko
- Department of Internal Medicine, Yonsei University Wonju College of Medicine, Wonju 26426, Republic of Korea; (S.Y.K.); (G.Y.S.); (G.Y.L.)
| | - Ga Yeong Song
- Department of Internal Medicine, Yonsei University Wonju College of Medicine, Wonju 26426, Republic of Korea; (S.Y.K.); (G.Y.S.); (G.Y.L.)
| | - Geon Yeong Lee
- Department of Internal Medicine, Yonsei University Wonju College of Medicine, Wonju 26426, Republic of Korea; (S.Y.K.); (G.Y.S.); (G.Y.L.)
| | - Sung Hwa Kim
- National Health Big Data Clinical Research Institute, Wonju 26426, Republic of Korea; (S.H.K.); (D.R.K.)
- Department of Biostatistics, Yonsei University Wonju College of Medicine, Wonju 26426, Republic of Korea
| | - Dae Ryong Kang
- National Health Big Data Clinical Research Institute, Wonju 26426, Republic of Korea; (S.H.K.); (D.R.K.)
- Department of Precision Medicine, Yonsei University Wonju College of Medicine, Wonju 26426, Republic of Korea
| | - Jiye Kim
- Department of Plastic Surgery, Yonsei University Wonju College of Medicine, Wonju 26426, Republic of Korea; (M.J.S.); (D.G.L.)
| | - Jun Young Lee
- Department of Internal Medicine, Yonsei University Wonju College of Medicine, Wonju 26426, Republic of Korea; (S.Y.K.); (G.Y.S.); (G.Y.L.)
- National Health Big Data Clinical Research Institute, Wonju 26426, Republic of Korea; (S.H.K.); (D.R.K.)
- Transplantation Center, Wonju Severance Christian Hospital, Wonju 26426, Republic of Korea
- Center of Evidence Based Medicine, Institute of Convergence Science, Yonsei University, Seoul 03722, Republic of Korea
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7
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Carle R, Tehan P, Stewart S, Semple D, Pilmore A, Carroll MR. Variability of toe pressures during haemodialysis: comparison of people with and without diabetes; a pilot study. J Foot Ankle Res 2023; 16:42. [PMID: 37430286 DOI: 10.1186/s13047-023-00642-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Accepted: 06/29/2023] [Indexed: 07/12/2023] Open
Abstract
BACKGROUND Diabetes, end stage renal disease (ESRD), and peripheral arterial disease (PAD) are associated with a higher risk of diabetes-related lower limb amputation. Timely identification of PAD with toe systolic blood pressure (TSBP) and toe-brachial pressure index (TBPI) is critical in order to implement foot protection strategies to prevent foot complications in people with ESRD. There is limited evidence describing the effect of haemodialysis on TSBP and TBPI. This study aimed to determine the variability of TSBP and TBPI during haemodialysis in people with ESRD, and to determine whether any observed variability differed between people with and without diabetes. METHODS TSBP and TBPI were taken before dialysis (T1), one hour into dialysis (T2) and in the last 15 min of dialysis (T3) during a single dialysis session. Linear mixed effects models were undertaken to determine the variability in TSBP and TBPI across the three time points and to determine whether this variability differed between people with and without diabetes. RESULTS Thirty participants were recruited, including 17 (57%) with diabetes and 13 (43%) with no diabetes. A significant overall reduction in TSBP was observed across all participants (P < 0.001). There was a significant reduction in TSBP between T1 and T2 (P < 0.001) and between T1 and T3 (P < 0.001). There was no significant overall change in TBPI over time (P = 0.62). There was no significant overall difference in TSBP between people with diabetes and people with no diabetes (mean difference [95% CI]: -9.28 [-40.20, 21.64], P = 0.54). There was no significant overall difference in TBPI between people with diabetes and people with no diabetes (mean difference [95% CI]: -0.01 [-0.17, 03.16], P = 0.91). CONCLUSION TSBP and TBPI are an essential part of vascular assessment of the lower limb. TBPI remained stable and TSBP significantly reduced during dialysis. Given the frequency and duration of dialysis, clinicians taking toe pressures to screen for PAD should be aware of this reduction and consider how this may have an impact on wound healing capacity and the development of foot related complications.
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Affiliation(s)
- Rachel Carle
- Community and Long-Term Conditions Directorate, Te Toka Tumai, Auckland, New Zealand
| | - Peta Tehan
- Department of Surgery, School of Clinical Sciences, Faculty of Medicine, Nursing and Allied Health, Monash University, Clayton, VIC, Australia
| | - Sarah Stewart
- Department of Podiatry, School of Clinical Sciences, Faculty of Health and Environmental Sciences, Auckland University of Technology, Private Bag 92 006, Auckland, 1142, New Zealand
- Active Living and Rehabilitation, Aotearoa New Zealand, Health and Rehabilitation Research Institute, School of Clinical Sciences, Auckland University of Technology, Auckland, New Zealand
| | - David Semple
- Department of Renal Medicine, Te Toka Tumai, Auckland, New Zealand
- School of Medicine, University of Auckland, Auckland, New Zealand
| | - Andrew Pilmore
- Department of Renal Medicine, Te Toka Tumai, Auckland, New Zealand
| | - Matthew R Carroll
- Department of Podiatry, School of Clinical Sciences, Faculty of Health and Environmental Sciences, Auckland University of Technology, Private Bag 92 006, Auckland, 1142, New Zealand.
- Active Living and Rehabilitation, Aotearoa New Zealand, Health and Rehabilitation Research Institute, School of Clinical Sciences, Auckland University of Technology, Auckland, New Zealand.
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Balestrieri N, Palzkill V, Pass C, Tan J, Salyers ZR, Moparthy C, Murillo A, Kim K, Thome T, Yang Q, O’Malley KA, Berceli SA, Yue F, Scali ST, Ferreira LF, Ryan TE. Activation of the Aryl Hydrocarbon Receptor in Muscle Exacerbates Ischemic Pathology in Chronic Kidney Disease. Circ Res 2023; 133:158-176. [PMID: 37325935 PMCID: PMC10330629 DOI: 10.1161/circresaha.123.322875] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Accepted: 06/07/2023] [Indexed: 06/17/2023]
Abstract
BACKGROUND Chronic kidney disease (CKD) accelerates the development of atherosclerosis, decreases muscle function, and increases the risk of amputation or death in patients with peripheral artery disease (PAD). However, the mechanisms underlying this pathobiology are ill-defined. Recent work has indicated that tryptophan-derived uremic solutes, which are ligands for AHR (aryl hydrocarbon receptor), are associated with limb amputation in PAD. Herein, we examined the role of AHR activation in the myopathy of PAD and CKD. METHODS AHR-related gene expression was evaluated in skeletal muscle obtained from mice and human PAD patients with and without CKD. AHRmKO (skeletal muscle-specific AHR knockout) mice with and without CKD were subjected to femoral artery ligation, and a battery of assessments were performed to evaluate vascular, muscle, and mitochondrial health. Single-nuclei RNA sequencing was performed to explore intercellular communication. Expression of the constitutively active AHR was used to isolate the role of AHR in mice without CKD. RESULTS PAD patients and mice with CKD displayed significantly higher mRNA expression of classical AHR-dependent genes (Cyp1a1, Cyp1b1, and Aldh3a1) when compared with either muscle from the PAD condition with normal renal function (P<0.05 for all 3 genes) or nonischemic controls. AHRmKO significantly improved limb perfusion recovery and arteriogenesis, preserved vasculogenic paracrine signaling from myofibers, increased muscle mass and strength, as well as enhanced mitochondrial function in an experimental model of PAD/CKD. Moreover, viral-mediated skeletal muscle-specific expression of a constitutively active AHR in mice with normal kidney function exacerbated the ischemic myopathy evidenced by smaller muscle masses, reduced contractile function, histopathology, altered vasculogenic signaling, and lower mitochondrial respiratory function. CONCLUSIONS These findings establish AHR activation in muscle as a pivotal regulator of the ischemic limb pathology in CKD. Further, the totality of the results provides support for testing of clinical interventions that diminish AHR signaling in these conditions.
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Affiliation(s)
- Nicholas Balestrieri
- Department of Applied Physiology and Kinesiology, The University of Florida, Gainesville, FL, USA
| | - Victoria Palzkill
- Department of Applied Physiology and Kinesiology, The University of Florida, Gainesville, FL, USA
| | - Caroline Pass
- Department of Applied Physiology and Kinesiology, The University of Florida, Gainesville, FL, USA
| | - Jianna Tan
- Department of Applied Physiology and Kinesiology, The University of Florida, Gainesville, FL, USA
| | - Zachary R. Salyers
- Department of Applied Physiology and Kinesiology, The University of Florida, Gainesville, FL, USA
| | - Chatick Moparthy
- Department of Applied Physiology and Kinesiology, The University of Florida, Gainesville, FL, USA
| | - Ania Murillo
- Department of Applied Physiology and Kinesiology, The University of Florida, Gainesville, FL, USA
| | - Kyoungrae Kim
- Department of Applied Physiology and Kinesiology, The University of Florida, Gainesville, FL, USA
| | - Trace Thome
- Department of Applied Physiology and Kinesiology, The University of Florida, Gainesville, FL, USA
| | - Qingping Yang
- Department of Applied Physiology and Kinesiology, The University of Florida, Gainesville, FL, USA
| | - Kerri A. O’Malley
- Department of Surgery, The University of Florida, Gainesville, FL, USA
| | - Scott A. Berceli
- Department of Surgery, The University of Florida, Gainesville, FL, USA
| | - Feng Yue
- Department of Animal Sciences, The University of Florida, Gainesville, FL, USA
- Myology Institute, The University of Florida, Gainesville, FL, USA
| | | | - Leonardo F. Ferreira
- Department of Applied Physiology and Kinesiology, The University of Florida, Gainesville, FL, USA
- Center for Exercise Science, The University of Florida, Gainesville, FL, USA
- Myology Institute, The University of Florida, Gainesville, FL, USA
| | - Terence E. Ryan
- Department of Applied Physiology and Kinesiology, The University of Florida, Gainesville, FL, USA
- Center for Exercise Science, The University of Florida, Gainesville, FL, USA
- Myology Institute, The University of Florida, Gainesville, FL, USA
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9
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Markoulli M, Ahmad S, Arcot J, Arita R, Benitez-Del-Castillo J, Caffery B, Downie LE, Edwards K, Flanagan J, Labetoulle M, Misra SL, Mrugacz M, Singh S, Sheppard J, Vehof J, Versura P, Willcox MDP, Ziemanski J, Wolffsohn JS. TFOS Lifestyle: Impact of nutrition on the ocular surface. Ocul Surf 2023; 29:226-271. [PMID: 37100346 DOI: 10.1016/j.jtos.2023.04.003] [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: 03/30/2023] [Accepted: 04/06/2023] [Indexed: 04/28/2023]
Abstract
Nutrients, required by human bodies to perform life-sustaining functions, are obtained from the diet. They are broadly classified into macronutrients (carbohydrates, lipids, and proteins), micronutrients (vitamins and minerals) and water. All nutrients serve as a source of energy, provide structural support to the body and/or regulate the chemical processes of the body. Food and drinks also consist of non-nutrients that may be beneficial (e.g., antioxidants) or harmful (e.g., dyes or preservatives added to processed foods) to the body and the ocular surface. There is also a complex interplay between systemic disorders and an individual's nutritional status. Changes in the gut microbiome may lead to alterations at the ocular surface. Poor nutrition may exacerbate select systemic conditions. Similarly, certain systemic conditions may affect the uptake, processing and distribution of nutrients by the body. These disorders may lead to deficiencies in micro- and macro-nutrients that are important in maintaining ocular surface health. Medications used to treat these conditions may also cause ocular surface changes. The prevalence of nutrition-related chronic diseases is climbing worldwide. This report sought to review the evidence supporting the impact of nutrition on the ocular surface, either directly or as a consequence of the chronic diseases that result. To address a key question, a systematic review investigated the effects of intentional food restriction on ocular surface health; of the 25 included studies, most investigated Ramadan fasting (56%), followed by bariatric surgery (16%), anorexia nervosa (16%), but none were judged to be of high quality, with no randomized-controlled trials.
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Affiliation(s)
- Maria Markoulli
- School of Optometry and Vision Science, UNSW Sydney, NSW, Australia.
| | - Sumayya Ahmad
- Icahn School of Medicine of Mt. Sinai, New York, NY, USA
| | - Jayashree Arcot
- Food and Health, School of Chemical Engineering, UNSW Sydney, Australia
| | - Reiko Arita
- Department of Ophthalmology, Itoh Clinic, Saitama, Japan
| | | | | | - Laura E Downie
- Department of Optometry and Vision Sciences, The University of Melbourne, Parkville, Victoria, Australia
| | - Katie Edwards
- School of Optometry and Vision Science, Queensland University of Technology, Brisbane, Australia
| | - Judith Flanagan
- School of Optometry and Vision Science, UNSW Sydney, NSW, Australia; Vision CRC, USA
| | - Marc Labetoulle
- Ophthalmology Department, Hospital Bicêtre, APHP, Paris-Saclay University, Le Kremlin-Bicêtre, France; IDMIT (CEA-Paris Saclay-Inserm U1184), Fontenay-aux-Roses, France
| | - Stuti L Misra
- Department of Ophthalmology, New Zealand National Eye Centre, The University of Auckland, Auckland, New Zealand
| | | | - Sumeer Singh
- Department of Optometry and Vision Sciences, The University of Melbourne, Parkville, Victoria, Australia
| | - John Sheppard
- Virginia Eye Consultants, Norfolk, VA, USA; Eastern Virginia Medical School, Norfolk, VA, USA
| | - Jelle Vehof
- Departments of Ophthalmology and Epidemiology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands; Section of Ophthalmology, School of Life Course Sciences, King's College London, London, UK; Department of Ophthalmology, Vestfold Hospital Trust, Tønsberg, Norway
| | - Piera Versura
- Cornea and Ocular Surface Analysis - Translation Research Laboratory, Ophthalmology Unit, DIMEC Alma Mater Studiorum Università di Bologna, Italy; IRCCS AOU di Bologna Policlinico di Sant'Orsola, Bologna, Italy
| | - Mark D P Willcox
- School of Optometry and Vision Science, UNSW Sydney, NSW, Australia
| | - Jillian Ziemanski
- School of Optometry, University of Alabama at Birmingham, Birmingham, AL, USA
| | - James S Wolffsohn
- College of Health & Life Sciences, School of Optometry, Aston University, Birmingham, UK
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Balestrieri N, Palzkill V, Pass C, Tan J, Salyers ZR, Moparthy C, Murillo A, Kim K, Thome T, Yang Q, O'Malley KA, Berceli SA, Yue F, Scali ST, Ferreira LF, Ryan TE. Chronic activation of the aryl hydrocarbon receptor in muscle exacerbates ischemic pathology in chronic kidney disease. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.05.16.541060. [PMID: 37292677 PMCID: PMC10245783 DOI: 10.1101/2023.05.16.541060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Chronic kidney disease (CKD) accelerates the development of atherosclerosis, decreases muscle function, and increases the risk of amputation or death in patients with peripheral artery disease (PAD). However, the cellular and physiological mechanisms underlying this pathobiology are ill-defined. Recent work has indicated that tryptophan-derived uremic toxins, many of which are ligands for the aryl hydrocarbon receptor (AHR), are associated with adverse limb outcomes in PAD. We hypothesized that chronic AHR activation, driven by the accumulation of tryptophan-derived uremic metabolites, may mediate the myopathic condition in the presence of CKD and PAD. Both PAD patients with CKD and mice with CKD subjected to femoral artery ligation (FAL) displayed significantly higher mRNA expression of classical AHR-dependent genes ( Cyp1a1 , Cyp1b1 , and Aldh3a1 ) when compared to either muscle from the PAD condition with normal renal function ( P <0.05 for all three genes) or non-ischemic controls. Skeletal-muscle-specific AHR deletion in mice (AHR mKO ) significantly improved limb muscle perfusion recovery and arteriogenesis, preserved vasculogenic paracrine signaling from myofibers, increased muscle mass and contractile function, as well as enhanced mitochondrial oxidative phosphorylation and respiratory capacity in an experimental model of PAD/CKD. Moreover, viral-mediated skeletal muscle-specific expression of a constitutively active AHR in mice with normal kidney function exacerbated the ischemic myopathy evidenced by smaller muscle masses, reduced contractile function, histopathology, altered vasculogenic signaling, and lower mitochondrial respiratory function. These findings establish chronic AHR activation in muscle as a pivotal regulator of the ischemic limb pathology in PAD. Further, the totality of the results provide support for testing of clinical interventions that diminish AHR signaling in these conditions.
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陈 大, 龚 洪, 任 妍, 李 燕, 陈 利, 唐 薇, 高 赟, 王 椿, 冉 兴. [Clinical Characteristics and Prognosis of Diabetic Foot Ulcers Patients of Different Renal Function Statuses]. SICHUAN DA XUE XUE BAO. YI XUE BAN = JOURNAL OF SICHUAN UNIVERSITY. MEDICAL SCIENCE EDITION 2023; 54:165-170. [PMID: 36647661 PMCID: PMC10409019 DOI: 10.12182/20230160503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Indexed: 01/18/2023]
Abstract
Objective To explore the clinical characteristics and the prognosis of diabetic foot ulcers (DFU) inpatients of different renal function statuses. Methods A retrospective analysis of 962 inpatients with DFU was conducted. The patients were divided into three groups according to their renal function statuses, and the clinical characteristics of the three groups were compared to identify differences. In addition, the patients were followed up in outpatient clinics or by telephone and their prognostic status and risk factors for death were analyzed. Results Analysis of the clinical characteristics showed that, compared with diabetic patients with normal renal function or mild renal function impairment, diabetic patients with moderate and severe renal function impairment had a longer course of disease ( P<0.001). Patients with foot ulcers of Wagner grade 4 predominates the moderate and severe renal function impairment groups ( P<0.05). Patients in the moderate and severe renal function impairment groups had a relatively higher proportion of comorbidities, including hypertension, coronary heart disease, and peripheral arterial disease ( P<0.05). These patients had relatively lower levels of glycosylated hemoglobin and hemoglobin (all P<0.05) and relatively higher levels of neutrophil ratio and procalcitonin (all P<0.05). Of the two groups, patients in the moderate renal function impairment group were older ( P<0.001) and had lower ankle-brachial index ( P<0.001). The severe renal function impairment group had a higher proportion of patients with foot ulcers of Wagner grades 3 and 5 (all P<0.05). For the purpose of conducting prognostic analysis, 748 patients were followed up in outpatient clinics or by telephone for a median length of 41 months. Among them, 239 died. The all-cause mortality was 31.9%, and the mortality in the three groups was 25.8%, 46.2% ( P<0.001), and 59.4% ( P<0.001), respectively. The survival rate of patients in the moderate and severe renal function impairment groups was significantly lower than those in the normal renal function and mild renal function impairment groups ( P<0.001). Univariate Cox regression analysis showed that age, concomitant coronary heart disease and peripheral arterial disease, degree of renal function impairment, and foot ulcers of Wagner grade 4 and 5 were associated with all-cause deaths. Furthermore, multivariate Cox regression analysis showed that moderate and severe renal function impairment was an independent risk factor for all-cause deaths in DFU patients ( P<0.001). Conclusions As renal function impairment worsens, patients with DFU present clinical characteristics of greater complexity, higher risks of cardiovascular events, and higher mortality. It is essential to prevent kidney damage and foot ulcers, to pay attention to the cardiovascular risks of DFU patients with moderate and severe renal function impairment, and to reduce mortality.
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Affiliation(s)
- 大伟 陈
- 四川大学华西医院 内分泌代谢科 糖尿病足诊治中心 (成都 610041)Diabetic Foot Care Center, Department of Endocrinology and Metabolism, West China Hospital, Sichuan University, Chengdu 610041, China
| | - 洪平 龚
- 四川大学华西医院 内分泌代谢科 糖尿病足诊治中心 (成都 610041)Diabetic Foot Care Center, Department of Endocrinology and Metabolism, West China Hospital, Sichuan University, Chengdu 610041, China
- 四川大学华西医院 全科医学中心 (成都 610041)General Practice Ward, General Practice Medical Center, West China Hospital, Sichuan University, Chengdu 610041, China
| | - 妍 任
- 四川大学华西医院 内分泌代谢科 糖尿病足诊治中心 (成都 610041)Diabetic Foot Care Center, Department of Endocrinology and Metabolism, West China Hospital, Sichuan University, Chengdu 610041, China
| | - 燕 李
- 四川大学华西医院 内分泌代谢科 糖尿病足诊治中心 (成都 610041)Diabetic Foot Care Center, Department of Endocrinology and Metabolism, West China Hospital, Sichuan University, Chengdu 610041, China
| | - 利鸿 陈
- 四川大学华西医院 内分泌代谢科 糖尿病足诊治中心 (成都 610041)Diabetic Foot Care Center, Department of Endocrinology and Metabolism, West China Hospital, Sichuan University, Chengdu 610041, China
| | - 薇薇 唐
- 四川大学华西医院 内分泌代谢科 糖尿病足诊治中心 (成都 610041)Diabetic Foot Care Center, Department of Endocrinology and Metabolism, West China Hospital, Sichuan University, Chengdu 610041, China
| | - 赟 高
- 四川大学华西医院 内分泌代谢科 糖尿病足诊治中心 (成都 610041)Diabetic Foot Care Center, Department of Endocrinology and Metabolism, West China Hospital, Sichuan University, Chengdu 610041, China
| | - 椿 王
- 四川大学华西医院 内分泌代谢科 糖尿病足诊治中心 (成都 610041)Diabetic Foot Care Center, Department of Endocrinology and Metabolism, West China Hospital, Sichuan University, Chengdu 610041, China
| | - 兴无 冉
- 四川大学华西医院 内分泌代谢科 糖尿病足诊治中心 (成都 610041)Diabetic Foot Care Center, Department of Endocrinology and Metabolism, West China Hospital, Sichuan University, Chengdu 610041, China
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12
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Lin CW, Armstrong DG, Huang CH, Lin CH, Hung SY, Liu PH, Huang YY. Diabetic foot disease in subjects with End-stage renal Disease: A nationwide study over 14 years highlighting an emerging threat. Diabetes Res Clin Pract 2022; 193:110134. [PMID: 36349589 DOI: 10.1016/j.diabres.2022.110134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/17/2022] [Revised: 10/03/2022] [Accepted: 10/20/2022] [Indexed: 11/17/2022]
Abstract
AIMS To disclose prevalence, demographic, foot characteristics as well as management and lower-extremity amputations (LEAs) of subjects with end-stage renal disease (ESRD) on diabetic foot diseases (DFDs). METHODS Data were derived from the Taiwan National Health Insurance Research Database between 2004 and 2017. DFDs were defined as ulcers, infections, or severe peripheral arterial diseases (PADs) in patients with type 2 diabetes. Clinical characteristics were analyzed between subjects with and without ESRD. RESULTS Subjects with ESRD have increased impacts on the DFD population either from annual prevalence (2.7 % to 10.42 %, P for trend < 0.001), or proportional representation in LEAs (7.91 % to 26.37 %, P < 0.001) over 14 years. The annual trends for major-LEAs rates have decreased in both subjects with and without ESRD (13.67 % to 5.82 % and 3.48 % to 1.47 %, both P < 0.001). Notably, the concomitant increase of endovascular treatments (EVTs) (7.09 % to 29.41 %, P < 0.001) was associated with the decrease of major-LEAs (P for interaction < 0.001) in subjects with ESRD. CONCLUSIONS As the annual prevalence of subjects with ESRD has increased 3.9-fold over years, they now account for more than 30% of annual major-LEA of the total DFD population. Interdisciplinary team approach and aggressive EVTs might reduce major-LEAs in these patients.
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Affiliation(s)
- Cheng-Wei Lin
- Division of Endocrinology and Metabolism, Chang Gung Memorial Hospital at Linkou, Taoyuan City, Taiwan
| | - David G Armstrong
- Southwestern Academic Limb Salvage Alliance (SALSA), Department of Surgery, Keck School of Medicine of University of Southern California (USC), Los Angeles, USA (D.G.A.)
| | - Chung-Huei Huang
- Division of Endocrinology and Metabolism, Chang Gung Memorial Hospital at Linkou, Taoyuan City, Taiwan
| | - Chia-Hung Lin
- Division of Endocrinology and Metabolism, Chang Gung Memorial Hospital at Linkou, Taoyuan City, Taiwan
| | - Shih-Yuan Hung
- Division of Endocrinology and Metabolism, Chang Gung Memorial Hospital at Linkou, Taoyuan City, Taiwan
| | - Pi-Hua Liu
- Division of Endocrinology and Metabolism, Chang Gung Memorial Hospital at Linkou, Taoyuan City, Taiwan; Clinical Informatics and Medical Statistics Research Center, College of Medicine, Chang Gung University, Taoyuan, Taiwan.
| | - Yu-Yao Huang
- Division of Endocrinology and Metabolism, Chang Gung Memorial Hospital at Linkou, Taoyuan City, Taiwan; College of Medicine, Chang Gung University, Taoyuan City, Taiwan; Department of Medical Nutrition Therapy, Chang Gung Memorial Hospital, Taoyuan City, Taiwan.
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13
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Lytvyn Y, Albakr R, Bjornstad P, Lovblom LE, Liu H, Lovshin JA, Boulet G, Farooqi MA, Weisman A, Keenan HA, Brent MH, Paul N, Bril V, Perkins BA, Cherney DZI. Renal hemodynamic dysfunction and neuropathy in longstanding type 1 diabetes: Results from the Canadian study of longevity in type 1 diabetes. J Diabetes Complications 2022; 36:108320. [PMID: 36201892 PMCID: PMC10187942 DOI: 10.1016/j.jdiacomp.2022.108320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 08/29/2022] [Accepted: 09/23/2022] [Indexed: 11/28/2022]
Abstract
AIMS To determine the relationship between renal hemodynamic function and neuropathy in adults with ≥50-years of type 1 diabetes (T1D) compared to nondiabetic controls. METHODS Glomerular filtration rate (GFR, inulin), effective renal plasma flow (ERPF, p-aminohippurate), modified Toronto Clinical Neuropathy Score (mTCNS), corneal confocal microscopy, nerve conduction, and heart rate variability (autonomic function) were measured; afferent (RA) and efferent (RE) arteriolar resistances were estimated using the Gomez equations in 74 participants with T1D and in 75 controls. Diabetic kidney disease (DKD) non-resistors were defined by eGFRMDRD < 60 ml/min/1.73 m2 or 24-h urine albumin excretion >30 mg/day. Linear regression was applied to examine the relationships between renal function (dependent variable) and neuropathy measures (independent variable), adjusted for age, sex, HbA1c, systolic blood pressure, low density lipoprotein cholesterol, and 24-h urine albumin to creatinine ratio. RESULTS Higher mTCNS associated with lower renal blood flow (β ± SE:-9.29 ± 4.20, p = 0.03) and greater RE (β ± SE:32.97 ± 15.43, p = 0.04) in participants with T1D, but not in controls. DKD non-resistors had a higher mTCNS and worse measures of corneal nerve morphology compared to those without DKD. Renal hemodynamic parameters did not associate with autonomic nerve function. CONCLUSIONS Although neurological dysfunction in the presence of diabetes may contribute to impaired renal blood flow resulting in ischemic injury in patients with T1D, early autonomic dysfunction does not appear to be associated with kidney function changes.
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Affiliation(s)
- Yuliya Lytvyn
- Department of Medicine, Division of Nephrology, Toronto General Hospital, University of Toronto, Toronto, Ontario, Canada
| | - Rehab Albakr
- Department of Medicine, Division of Nephrology, Toronto General Hospital, University of Toronto, Toronto, Ontario, Canada; Division of Nephrology, College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Petter Bjornstad
- Department of Pediatrics, Division of Endocrinology, University of Colorado School of Medicine, Aurora, CO, USA
| | - Leif Erik Lovblom
- Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Ontario, Canada
| | - Hongyan Liu
- Department of Medicine, Division of Nephrology, Toronto General Hospital, University of Toronto, Toronto, Ontario, Canada
| | - Julie A Lovshin
- Department of Medicine, Division of Endocrinology and Metabolism, Mount Sinai Hospital, University of Toronto, Toronto, Ontario, Canada
| | - Genevieve Boulet
- Department of Medicine, Division of Endocrinology and Metabolism, Mount Sinai Hospital, University of Toronto, Toronto, Ontario, Canada
| | - Mohammed A Farooqi
- Department of Medicine, Division of Endocrinology and Metabolism, Mount Sinai Hospital, University of Toronto, Toronto, Ontario, Canada
| | - Alanna Weisman
- Department of Medicine, Division of Endocrinology and Metabolism, Mount Sinai Hospital, University of Toronto, Toronto, Ontario, Canada
| | | | - Michael H Brent
- Department of Ophthalmology and Vision Sciences, Department of Medicine, University of Toronto, Ontario, Canada
| | - Narinder Paul
- Joint Department of Medical Imaging, Division of Cardiothoracic Radiology, University Health Network, Toronto, Ontario, Canada
| | - Vera Bril
- Division of Neurology, Department of Medicine, University of Toronto, Ontario, Canada
| | - Bruce A Perkins
- Department of Medicine, Division of Endocrinology and Metabolism, Mount Sinai Hospital, University of Toronto, Toronto, Ontario, Canada
| | - David Z I Cherney
- Department of Medicine, Division of Nephrology, Toronto General Hospital, University of Toronto, Toronto, Ontario, Canada.
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14
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Pittam B, Chumber R, Vashisht G, Miller S, O'Dowd C, Ledson T, Srinivas-Shankar U. The value of administering intravenous antibiotics during haemodialysis in the treatment of diabetic foot infections. J Wound Care 2022; 31:683-688. [PMID: 36001702 DOI: 10.12968/jowc.2022.31.8.683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
OBJECTIVE People with diabetes who are on haemodialysis (HD) are at a high risk of diabetic foot infections (DFI) and related complications. We explored the value of treating DFI with intravenous (IV) antibiotics during HD. METHOD This was an observational study of consecutively treated patients with DFIs with IV antibiotics during HD. Data collected included baseline characteristics, IV antibiotics used, details of multidisciplinary interventions and DFI treatment outcome. RESULTS A cohort of 11 patients, mean (±standard deviation) age 62.4±12.7 years, had 15 episodes of treatment with IV antibiotics during HD. Of the patients, six (54.5%) were male and nine (81.8%) had type 2 diabetes. The estimated mean glomerular filtration rate (eGFR) was 11.4±3.9ml/minute. All patients had infected foot ulceration, soft tissue infection, six (54.5%) patients had osteomyelitis, and two (18.2%) had wet gangrene. The commonest IV antibiotic used was vancomycin (10/15 episodes, 66.7%). Other IV antibiotics used were daptomycin and meropenem. In three episodes, oral ciprofloxacin was used with IV antibiotics. The mean duration of antibiotic treatment was 9.2±4.9 weeks. Of the episodes, 11 (73.3%) were treated successfully with IV antibiotics alone and two (13.3%) episodes required minor surgical debridement/amputation. Some 10 (90.9%) members of the cohort had peripheral arterial disease and of those, five (50%) underwent angioplasty during IV antibiotic treatment. CONCLUSION HD provides a good opportunity for treatment with IV antibiotics in DFI. This mode of administration of IV antibiotics, along with multidisciplinary intervention, is associated with ulcer healing and resolution of infection in over three-quarters of patients with DFI. DECLARATION OF INTEREST The authors have no conflicts of interest to declare.
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Affiliation(s)
- Bradley Pittam
- Department of Diabetes and Endocrinology, Department of Pharmacy, Department of Nephrology, Wirral University Teaching Hospital NHS Foundation Trust, UK
| | - Ruby Chumber
- Department of Diabetes and Endocrinology, Department of Pharmacy, Department of Nephrology, Wirral University Teaching Hospital NHS Foundation Trust, UK
| | - Gaurav Vashisht
- Department of Diabetes and Endocrinology, Department of Pharmacy, Department of Nephrology, Wirral University Teaching Hospital NHS Foundation Trust, UK
| | - Sophie Miller
- Department of Diabetes and Endocrinology, Department of Pharmacy, Department of Nephrology, Wirral University Teaching Hospital NHS Foundation Trust, UK
| | - Christina O'Dowd
- Department of Diabetes and Endocrinology, Department of Pharmacy, Department of Nephrology, Wirral University Teaching Hospital NHS Foundation Trust, UK
| | - Thomas Ledson
- Department of Diabetes and Endocrinology, Department of Pharmacy, Department of Nephrology, Wirral University Teaching Hospital NHS Foundation Trust, UK
| | - Upendram Srinivas-Shankar
- Department of Diabetes and Endocrinology, Department of Pharmacy, Department of Nephrology, Wirral University Teaching Hospital NHS Foundation Trust, UK
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15
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Schembri N, Formosa C. Dialysis Treatment is an Independent Risk Factor for Foot Morbidity. INT J LOW EXTR WOUND 2022:15347346221074111. [PMID: 35037518 DOI: 10.1177/15347346221074111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Aim: To determine the prevalence of foot morbidity among patients with ESRD on dialysis. Methods: A prospective, non-experimental, quantitative time series design was employed. Forty-seven participants were recruited in the study. Medical records were reviewed followed by non-invasive foot assessments which included: Neurological, Arterial, Biomechanical, and Dermatological Assessment. Participants were assessed twice during the study. Results: Foot morbidity was found to be high among participants with ESRD on dialysis. 95.74% of participants presented with foot deformities, 76.60% had skin and nail conditions. 15% of participants had a history of ulceration and amputation. Moreover, active ulceration and history of revascularisation were also observed. Findings demonstrated overall poor foot health and footcare behavior within this population with 40.43% of participants having inappropriate footwear. The majority of participants did not check feet regularly, did not attend to podiatry appointments, and were unable to reach their feet for self-care. The Toe Brachial Pressure Index (TBPI), Spectral Doppler Waveform Analysis, and the Quantitative Sensory Testing (QST) were re-measured at each visit. Monophasic continuous doppler waveforms increased while triphasic waveforms decreased during the study period. Protective sensation did not decrease during the study period. The mean TBPI decreased during the study period. The relationship between the TBPI and duration of dialysis was found to be significant. Both DM and dialysis duration were identified as significant predictors of reduction in TBPI. Conclusion: This study demonstrates a high prevalence of foot morbidity among patients with ESRD on dialysis. This study highlighted the importance of expanding practice by introducing a podiatry service within the renal unit to provide foot screening, foot assessments, and foot care education, with the aim to reduce severe foot complications.
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16
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Kofod DH, Almdal TP, Sørensen VR, Feldt‐Rasmussen B, Hornum M. Micro‐ and macrovascular complications and risk factors for foot ulceration and amputation in individuals receiving dialysis with and without diabetes. Endocrinol Diabetes Metab 2022; 5:e00305. [PMID: 34658171 PMCID: PMC8754241 DOI: 10.1002/edm2.305] [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: 07/05/2021] [Revised: 09/28/2021] [Accepted: 10/04/2021] [Indexed: 11/21/2022] Open
Abstract
Introduction This study examined the prevalence of microvascular and macrovascular complications in people receiving dialysis with and without diabetes and investigated independent risk factors for foot ulcers and lower‐extremity amputations. Methods We performed a cross‐sectional study of 119 individuals with diabetes and 219 individuals without diabetes receiving chronic dialysis during June 2019 at the Department of Nephrology, Rigshospitalet, University of Copenhagen, Denmark. Effects of diabetes and other risk factors were assessed by log‐binomial regression. Prevalence data were compared with a historical control group of 38 individuals with diabetes receiving dialysis examined in 2004 in the same department. Results We found that persons with diabetes had a twofold higher risk ratio of current (unadjusted risk ratio 2.2 [95% CI 1.1, 4.7]) and previous foot ulcer (2.5 [1.7, 3.7]) and a fourfold higher risk ratio of lower‐extremity amputation (4.2 [2.1, 8.6]) in comparison with persons without diabetes (all p < .05). Furthermore, persons with diabetes had a 70% increased risk ratio of myocardial infarction (1.7 [1.0–2.8], p = .041). In multivariable‐adjusted analysis, current foot ulcer was independently associated with previous foot ulcer (adjusted risk ratio 4.0 [95% CI 1.8, 8.9]), while lower‐extremity amputation was independently associated with diabetes (3.8 [1.8, 8.2]) and male sex (4.1 [1.5, 11.3]) (all p < .01). Conclusions Individuals with diabetes receiving dialysis had a higher prevalence of foot ulcer, lower‐extremity amputation and myocardial infarction compared to individuals without diabetes. Previous foot ulcer was the most important risk factor for current foot ulcer, while diabetes and male sex were important risk factors for lower‐extremity amputation.
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Affiliation(s)
- Dea Haagensen Kofod
- Department of Nephrology RigshospitaletUniversity of Copenhagen Copenhagen Denmark
| | - Thomas Peter Almdal
- Department of Endocrinology RigshospitaletUniversity of Copenhagen Copenhagen Denmark
- Department of Clinical Medicine Faculty of Health and Medical Sciences University of Copenhagen Copenhagen Denmark
| | | | - Bo Feldt‐Rasmussen
- Department of Nephrology RigshospitaletUniversity of Copenhagen Copenhagen Denmark
- Department of Clinical Medicine Faculty of Health and Medical Sciences University of Copenhagen Copenhagen Denmark
| | - Mads Hornum
- Department of Nephrology RigshospitaletUniversity of Copenhagen Copenhagen Denmark
- Department of Clinical Medicine Faculty of Health and Medical Sciences University of Copenhagen Copenhagen Denmark
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Bonnet JB, Sultan A. Narrative Review of the Relationship Between CKD and Diabetic Foot Ulcer. Kidney Int Rep 2021; 7:381-388. [PMID: 35257052 PMCID: PMC8897302 DOI: 10.1016/j.ekir.2021.12.018] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Revised: 11/23/2021] [Accepted: 12/14/2021] [Indexed: 01/22/2023] Open
Abstract
Diabetic foot ulcer (DFU) and chronic kidney disease (CKD) are 2 significant complications of diabetes mellitus (DM). Up to 40% of patients with DM are expected to also develop CKD, and 19% to 34% will suffer from DFU during their lifetimes. However, data on the link between podiatric risk and the extent of CKD are scarce. Neuropathy, a key element of the International Working Group on the Diabetic Foot (IWGDF) classification, nevertheless appears to be related to the CKD stage. The incidence of DFU and its poor evolution also appear to be linked to the stage of CKD, with mortality reaching its peak in patients with end-stage renal disease (ESRD). Whatever, the decrease in the rate of diabetic foot amputation observed worldwide, especially for major amputations, is also observed in patients with ESRD. Specific actions taken for patients undergoing dialysis seems to improve the DFU prognosis. CKD and DFU share a number of elements of pathophysiology, the first of which is peripheral arterial disease (PAD). Uremic neuropathy and nutritional status also seem to create a link between the development of the 2 complications. This literature review provides an update on the complex and dynamic relationship between DFU and CKD. It examines the epidemiologic link between CKD and diabetic foot risk, CKD and DFU occurrence, and CKD and DFU prognosis. It focuses on the pathophysiological links between these 2 complications. Finally, it highlights the actions taken to improve management in the ESRD population that have reduced the rate of major amputations in this population by more than half.
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Xie P, Li Y, Deng B, Du C, Rui S, Deng W, Wang M, Boey J, Armstrong DG, Ma Y, Deng W. An explainable machine learning model for predicting in-hospital amputation rate of patients with diabetic foot ulcer. Int Wound J 2021; 19:910-918. [PMID: 34520110 PMCID: PMC9013600 DOI: 10.1111/iwj.13691] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 08/29/2021] [Accepted: 08/31/2021] [Indexed: 12/27/2022] Open
Abstract
Diabetic foot ulcer (DFU) is one of the most serious and alarming diabetic complications, which often leads to high amputation rates in diabetic patients. Machine learning is a part of the field of artificial intelligence, which can automatically learn models from data and better inform clinical decision‐making. We aimed to develop an accurate and explainable prediction model to estimate the risk of in‐hospital amputation in patients with DFU. A total of 618 hospitalised patients with DFU were included in this study. The patients were divided into non‐amputation, minor amputation or major amputation group. Light Gradient Boosting Machine (LightGBM) and 5‐fold cross‐validation tools were used to construct a multi‐class classification model to predict the three outcomes of interest. In addition, we used the SHapley Additive exPlanations (SHAP) algorithm to interpret the predictions of the model. Our area under the receiver‐operating‐characteristic curve (AUC) demonstrated a 0.90, 0.85 and 0.86 predictive ability for non‐amputation, minor amputation and major amputation outcomes, respectively. Taken together, our data demonstrated that the developed explainable machine learning model provided accurate estimates of the amputation rate in patients with DFU during hospitalisation. Besides, the model could inform individualised analyses of the patients' risk factors.
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Affiliation(s)
- Puguang Xie
- Department of Endocrinology and Metabolism, Chongqing Emergency Medical Center, Chongqing Key Laboratory of Emergency Medicine, Chongqing University Central Hospital, Chongqing University, Chongqing, China.,College of Bioengineering, Chongqing University of China, Chongqing, China
| | - Yuyao Li
- Department of Endocrinology and Metabolism, Chongqing Emergency Medical Center, Chongqing Key Laboratory of Emergency Medicine, Chongqing University Central Hospital, Chongqing University, Chongqing, China.,College of Bioengineering, Chongqing University of China, Chongqing, China
| | - Bo Deng
- Department of Endocrinology and Metabolism, Chongqing Emergency Medical Center, Chongqing Key Laboratory of Emergency Medicine, Chongqing University Central Hospital, Chongqing University, Chongqing, China
| | - Chenzhen Du
- Department of Endocrinology and Metabolism, Chongqing Emergency Medical Center, Chongqing Key Laboratory of Emergency Medicine, Chongqing University Central Hospital, Chongqing University, Chongqing, China.,College of Bioengineering, Chongqing University of China, Chongqing, China
| | - Shunli Rui
- Department of Endocrinology and Metabolism, Chongqing Emergency Medical Center, Chongqing Key Laboratory of Emergency Medicine, Chongqing University Central Hospital, Chongqing University, Chongqing, China
| | - Wu Deng
- College of Electronic Information and Automation, Civil Aviation University of China, Tianjin, China
| | - Min Wang
- Department of Endocrinology and Metabolism, Chongqing Emergency Medical Center, Chongqing Key Laboratory of Emergency Medicine, Chongqing University Central Hospital, Chongqing University, Chongqing, China.,College of Bioengineering, Chongqing University of China, Chongqing, China
| | - Johnson Boey
- Department of Podiatry, National University Hospital, Singapore
| | - David G Armstrong
- Department of Surgery, Keck School of Medicine of the University of Southern California, Los Angeles, California, USA
| | - Yu Ma
- Department of Endocrinology and Metabolism, Chongqing Emergency Medical Center, Chongqing Key Laboratory of Emergency Medicine, Chongqing University Central Hospital, Chongqing University, Chongqing, China.,College of Bioengineering, Chongqing University of China, Chongqing, China
| | - Wuquan Deng
- Department of Endocrinology and Metabolism, Chongqing Emergency Medical Center, Chongqing Key Laboratory of Emergency Medicine, Chongqing University Central Hospital, Chongqing University, Chongqing, China.,College of Bioengineering, Chongqing University of China, Chongqing, China
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19
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Herrera Herrera JL, Oyola López E, Llorente Pérez YJ. Factores asociados a las úlceras en miembros inferiores del paciente con enfermedad renal crónica en un centro de diálisis. INVESTIGACIÓN EN ENFERMERÍA: IMAGEN Y DESARROLLO 2021. [DOI: 10.11144/javeriana.ie23.faum] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
Abstract
Introducción: las personas adultas con enfermedad renal crónica (ERC) tienen mayor riesgo de presentar úlceras, especialmente en las extremidades inferiores. Sin embargo, existen datos limitados sobre la prevalencia y los factores asociados. Objetivo: determinar la prevalencia de úlceras en miembros inferiores y sus factores asociados en pacientes con enfermedad renal crónica que asisten a una institución de IV nivel de complejidad. Método: estudio de tipo observacional, transversal y analítico, la muestra fue de 561 participantes. Los instrumentos fueron una cha de datos sociodemográcos y de antecedentes, y el índice tobillo brazo (ITB). Resultados: los participantes fueron en su mayoría hombres (67%), con promedio de edad de 62 años; se encontró signicancia estadística (p < 0,05) entre las variables antecedente de diabetes, ITB bajo, haber tenido úlcera previa y presencia de úlcera en miembros inferiores. Conclusiones: estudiar este tipo de fenómenos en unidades de cuidado renal se convierte en una necesidad debido a la alta prevalencia y a los factores de riesgo asociados. Esto permite la planicación de estrategias encaminadas a la prevención.
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20
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Ho CLB, Chih HJ, Garimella PS, Matsushita K, Jansen S, Reid CM. Prevalence and risk factors of peripheral artery disease in a population with chronic kidney disease in Australia: A systematic review and meta-analysis. Nephrology (Carlton) 2021; 26:798-808. [PMID: 34156137 DOI: 10.1111/nep.13914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2021] [Revised: 05/27/2021] [Accepted: 06/08/2021] [Indexed: 12/24/2022]
Abstract
There is a lack of clarity and guidance for screening peripheral artery disease (PAD) in persons with chronic kidney disease (CKD) and end stage kidney disease (ESKD) despite this group being at excess risk of cardiovascular disease (CVD). In this current study, we performed a systematic review and meta-analysis to examine the prevalence and risk factors for PAD in persons with CKD in Australian cohorts. We used the inverse variance heterogeneity meta-analysis with double arcsine transformation to summarize the prevalence of PAD (with 95% CIs). Nine studies and 18 reports from the Australia and New Zealand dialysis and transplant registry with 36 cohorts were included in the review. We found a substantially higher PAD prevalence in cohorts based on an ankle-brachial index (ABI) or toe systolic pressure (TBI) than cohorts based on self-reported history. Higher PAD prevalence was observed in ESKD persons than CKD persons without dialysis (PAD diagnosis based on ABI or TBI: 31% in ESKD persons and 23% in CKD persons, PAD diagnosis based on self-reported history: 17% in ESKD persons and 10% in CKD persons). Older age, Caucasian race, cerebrovascular disease and haemodialysis were associated with the presence of PAD in ESKD persons. Our findings indicated a considerable proportion of PAD in CKD and ESKD persons particularly in those with ESKD. To develop and provide an adequate plan to clinically manage CKD patients with PAD, evidence of cost-effectiveness and clinical benefit of early detection of PAD in persons with CKD in Australia is recommended for future studies.
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Affiliation(s)
- Chau L B Ho
- School of Public Health, Curtin University, Perth, WA, Australia
| | - Hui J Chih
- School of Public Health, Curtin University, Perth, WA, Australia
| | - Pranav S Garimella
- Department of Medicine, University of California San Diego, California, USA
| | - Kunihiro Matsushita
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health and Division of Cardiology, Johns Hopkins School of Medicine, Maryland, USA.,Welch Center for Prevention, Epidemiology, and Clinical Research, Maryland, USA
| | - Shirley Jansen
- Curtin Medical School, Curtin University, Perth, WA, Australia.,Department of Vascular and Endovascular Surgery, Sir Charles Gairdner Hospital, Perth, WA, Australia.,Heart and Vascular Research Institute, Harry Perkins Institute for Medical Research, Perth, WA, Australia.,Faculty of Health and Medical Sciences, University of Western Australia, Perth, WA, Australia
| | - Christopher M Reid
- School of Public Health, Curtin University, Perth, WA, Australia.,CCRE Therapeutics, School of Public Health and Preventive Medicine, Monash University, Melbourne, Australia
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21
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Naazie IN, Mwinyogle A, Nejim B, Al-Nouri O, Cajas-Monson L, Malas MB. The association of estimated glomerular filtration rate with outcomes following infrainguinal bypass for peripheral arterial disease. J Vasc Surg 2021; 74:788-797.e1. [PMID: 33647436 DOI: 10.1016/j.jvs.2021.01.068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Accepted: 01/23/2021] [Indexed: 11/15/2022]
Abstract
OBJECTIVE Chronic kidney disease (CKD) is a recognized predictor of long-term survival, frequently coexisting with peripheral arterial disease (PAD). Estimated glomerular filtration rate (eGFR) is a more accurate marker of renal function than creatinine. This study sought to determine the graded impact of CKD, defined by eGFR, on infrainguinal lower extremity bypass (LEB) outcomes. METHODS This retrospective study examined 44,332 patients from the Vascular Quality Initiative database who underwent LEB between January 2003 and November 2019. The GFR was estimated using the Modification of Diet in Renal Disease equation. Multivariable logistic regression was used to study perioperative mortality and Kaplan-Meier survival estimation and multivariable Cox regression were used to evaluate 5-year mortality, 1-year major amputation, and major amputation/death. RESULTS The 30-day mortality odds was increased for CKD 3 (odds ratio [OR], 1.58; 95% confidence interval [CI], 1.32-1.91; P < .001) and CKD 5 (OR, 3.08; 95% CI, 2.45-3.87; P < .001) relative to CKD 1 to 2. Comparing CKD stages 3, 4, and 5 with CKD 1 and 2, there was a stepwise increase in the adjusted hazard of 5-year mortality (hazard ratio [HR], 1.18; 95% CI, 1.09-1.27; P < .001), (HR, 1.73; 95% CI; 1.47-2.03; P < .001) and (HR, 2.58; 95% CI, 2.33-3.84; P < .001), respectively. Although the risk of 1-year death or major amputation did not differ for CKD 3 compared with CKD 1, this was 50% higher for CKD 4 (HR, 1.50; 95% CI, 1.26-1.78; P < .001) and doubled for CKD 5 (HR, 2.07; 95% CI, 1.87-2.29; P < .001) compared with CKD 1 and 2. The adjusted HR for major amputation in 1 year was 0.81 (95% CI, 0.71-0.92; P = .002), 1.14 (95% CI, 0.84-1.54; P = .396) and 1.56 (95% CI,1.31-1.84; P < .001) for CKD 3, 4, and 5, respectively, compared with CKD 1 and 2. CONCLUSIONS The estimated GFR is a useful predictor of postoperative mortality, overall survival, and/or amputation after LEB in patients with PAD. It should be considered in the preoperative risk-benefit analysis process to guide patient selection in the population with concomitant PAD and CKD being considered for LEB.
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Affiliation(s)
- Isaac N Naazie
- Division of Vascular and Endovascular Surgery, Department of Surgery, University of California San Diego Health System, San Diego, Calif
| | | | - Besma Nejim
- Department of Vascular Surgery, Penn State Health Milton S. Hershey Medical Center, Hershey, Pa
| | - Omar Al-Nouri
- Division of Vascular and Endovascular Surgery, Department of Surgery, University of California San Diego Health System, San Diego, Calif
| | - Luis Cajas-Monson
- Division of Vascular and Endovascular Surgery, Department of Surgery, University of California San Diego Health System, San Diego, Calif
| | - Mahmoud B Malas
- Division of Vascular and Endovascular Surgery, Department of Surgery, University of California San Diego Health System, San Diego, Calif.
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22
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Terada K, Aratani S, Hirama A, Kashiwagi T, Sakai Y. Lower Limb Ulcer Associated with Peritonitis in Patients Undergoing Peritoneal Dialysis. Int J Nephrol Renovasc Dis 2021; 14:33-40. [PMID: 33603440 PMCID: PMC7884941 DOI: 10.2147/ijnrd.s295948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2020] [Accepted: 01/20/2021] [Indexed: 11/29/2022] Open
Abstract
Purpose Peritoneal dialysis (PD)-related peritonitis and lower limb ulcer are the important complications in patients undergoing PD. Although the association between lower limb ulcer and peritonitis in patients undergoing PD is unclear, based on our clinical experience and the clinical importance of the complications in patients undergoing PD, we hypothesized that lower limb ulcer is associated with peritonitis in patients on PD. Patients and Methods In this single center, retrospective cohort study, we studied 87 patients who started undergoing PD at our hospital from April 2015 to March 2020. We compared these 8 patients with lower limb ulcer with the other 79 patients without lower limb ulcer. We compared between the patients in the objection period of this study about peritonitis using Log rank test, and used the unpaired t-test and Fisher’s exact test to compare the clinical factors between the two groups. Moreover, we used univariate and multivariate logistic regression analyses to study the association of PD-related peritonitis with the clinical factors. Results The period developed first peritonitis of the patients on PD with lower limb ulcer was significant shorter than those without lower limb ulcer in Log rank test (P = 0.011). The Fisher’s exact test and unpaired t-test showed that the difference in the prevalence of PD-related peritonitis (P = 0.009), peritonitis/patient years (P = 0.036), the BMI (P = 0.007) and icodextrin (P = 0.001) were significant. Lower limb ulcer had significant associations with peritonitis in patients on PD in both univariate [odds ratio (OR) 8.461, 95% confidence interval (CI) 1.854–45.60, P = 0.006] and multivariate [OR 7.169, 95% CI 1.519–39.480, P = 0.013] logistic regression analysis. Conclusion In conclusion, lower limb ulcer may be associated with peritonitis in patients undergoing PD. Further large-scale, prospective studies are required to confirm these results.
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Affiliation(s)
- Kohsuke Terada
- Department of Nephrology, Graduate School of Medicine, Nippon Medical School, Tokyo, Japan
| | - Sae Aratani
- Department of Nephrology, Graduate School of Medicine, Nippon Medical School, Tokyo, Japan
| | - Akio Hirama
- Department of Nephrology, Graduate School of Medicine, Nippon Medical School, Tokyo, Japan
| | - Tetsuya Kashiwagi
- Department of Nephrology, Graduate School of Medicine, Nippon Medical School, Tokyo, Japan
| | - Yukinao Sakai
- Department of Nephrology, Graduate School of Medicine, Nippon Medical School, Tokyo, Japan
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23
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Salyers ZR, Coleman M, Balestrieri NP, Ryan TE. Indoxyl sulfate impairs angiogenesis via chronic aryl hydrocarbon receptor activation. Am J Physiol Cell Physiol 2021; 320:C240-C249. [PMID: 33406025 DOI: 10.1152/ajpcell.00262.2020] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Chronic kidney disease (CKD) is associated with a substantial increased risk of cardiovascular disease. There is growing evidence that uremic metabolites, which accumulate in the blood with CKD, have detrimental impacts on endothelial cell health and function. However, the molecular mechanisms by which uremic metabolites negatively impact endothelial cell biology are not fully understood. In this study, activation of the aryl hydrocarbon receptor (AHR) via indoxyl sulfate, a known uremic metabolite, was found to impair endothelial cell tube formation and proliferation but not migratory function. Moreover, aortic ring cultures treated with indoxyl sulfate also exhibited decreased sprouting and high AHR activation. Next, genetic knockdown of the AHR using shRNA was found to rescue endothelial cell tube formation, proliferation, and aortic ring sprouting. Similarly, pharmacological AHR antagonism using resveratrol and CH223191 were also found to rescue angiogenesis in cell and aortic ring cultures. Finally, a constitutively active AHR (CAAHR) vector was generated and used to confirm AHR-specific effects. Expression of the CAAHR recapitulated the impaired tube formation and proliferation in cultured endothelial cells and decreased sprouting in aortic ring cultures. Taken together, these data define the impact of AHR activation on angiogenesis and highlight the potential for therapeutic AHR antagonists, which may improve angiogenesis in the context of CKD and cardiovascular disease.
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Affiliation(s)
- Zachary R Salyers
- Department of Applied Physiology and Kinesiology, University of Florida, Gainesville, Florida
| | - Madeline Coleman
- Department of Applied Physiology and Kinesiology, University of Florida, Gainesville, Florida
| | - Nicholas P Balestrieri
- Department of Applied Physiology and Kinesiology, University of Florida, Gainesville, Florida
| | - Terence E Ryan
- Department of Applied Physiology and Kinesiology, University of Florida, Gainesville, Florida.,Center for Exercise Science, University of Florida, Gainesville, Florida
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24
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Seong EY, Liu S, Song SH, Leeper NJ, Winkelmayer WC, Montez-Rath ME, Chang TI. Intradialytic Hypotension and Newly Recognized Peripheral Artery Disease in Patients Receiving Hemodialysis. Am J Kidney Dis 2020; 77:730-738. [PMID: 33316351 DOI: 10.1053/j.ajkd.2020.10.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Accepted: 10/06/2020] [Indexed: 11/11/2022]
Abstract
RATIONALE & OBJECTIVE Intradialytic hypotension (IDH) may decrease systemic circulation to the legs, exacerbating symptoms of peripheral artery disease (PAD). We sought to evaluate the relationship between IDH and newly recognized lower extremity PAD among hemodialysis patients. STUDY DESIGN Retrospective cohort study. SETTING & PARTICIPANTS Linking data from the US Renal Data System to the electronic health records of a large dialysis provider, we identified adult patients (≥18 years of age) with Medicare Parts A and B who initiated dialysis (2006-2011) without previously recognized PAD. EXPOSURE The time-varying proportion of hemodialysis sessions with IDH defined as the nadir intradialytic systolic blood pressure <90 mm Hg. We categorized the proportion of sessions with IDH within serial 30-day intervals as 0%, >0% to <15%, 15% to <30%, and ≥30%. OUTCOMES Newly recognized PAD was ascertained using PAD diagnostic and procedure codes for amputation or revascularization, in serial 30-day intervals subsequent to each 30-day exposure interval. ANALYTICAL APPROACH To account for the competing risks of death and kidney transplantation, we estimated unadjusted and adjusted subdistribution hazard ratios using the Kaplan-Meier multiple imputation method in combination with the extended Cox model to account for IDH as a time-varying exposure. RESULTS Among 45,591 patients, those with more frequent baseline IDH had a higher prevalence of cardiovascular diseases. During 61,725 person-years of follow-up, 7,886 patients had newly recognized PAD. We found a graded, direct association between IDH and newly recognized PAD. For example, having IDH in ≥30% of dialysis sessions during a given 30-day interval (vs 0%) was associated with a 24% (95% CI, 17%-32%) higher hazard than having newly recognized PAD in the subsequent 30 days. LIMITATIONS Unmeasured confounding; ascertainment of PAD from claims. CONCLUSIONS Patients receiving hemodialysis who had more frequent IDH had higher rates of newly recognized PAD. Patients with frequent IDH may warrant careful examination for PAD.
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Affiliation(s)
- Eun Young Seong
- Division of Nephrology, Pusan National University School of Medicine, Busan, South Korea; Biomedical Research Institute, Pusan National University Hospital, Busan, South Korea
| | - Sai Liu
- Division of Nephrology, Stanford University School of Medicine, Palo Alto, CA
| | - Sang Heon Song
- Division of Nephrology, Pusan National University School of Medicine, Busan, South Korea; Biomedical Research Institute, Pusan National University Hospital, Busan, South Korea
| | - Nicholas J Leeper
- Division of Vascular Surgery, Stanford University School of Medicine, Palo Alto, CA
| | | | - Maria E Montez-Rath
- Division of Nephrology, Stanford University School of Medicine, Palo Alto, CA
| | - Tara I Chang
- Division of Nephrology, Stanford University School of Medicine, Palo Alto, CA.
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25
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Dallimore SM, Puli N, Kim D, Kaminski MR. Infrared dermal thermometry is highly reliable in the assessment of patients with Charcot neuroarthropathy. J Foot Ankle Res 2020; 13:56. [PMID: 32928270 PMCID: PMC7489208 DOI: 10.1186/s13047-020-00421-z] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Accepted: 08/17/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Charcot neuroarthropathy (Charcot foot) is a serious limb-threatening complication most commonly seen in individuals with diabetic peripheral neuropathy. Although dermal thermometry is widely used by clinicians to assist in the diagnosis, monitoring, and management of the disease, there is limited high-quality evidence to support its reliability. Therefore, this study investigated the intra-rater and inter-rater reliability of infrared dermal thermometry in patients with Charcot neuroarthropathy. METHODS We collected clinical, demographic, health status, and foot examination information on 32 adults with Charcot neuroarthropathy from a metropolitan high-risk foot service in Melbourne, Australia. Infrared dermal thermometry assessments were conducted by two independent raters at 10 anatomical sites of the Charcot foot using both a (i) touch and (ii) non-touch technique. Intra-rater and inter-rater reliability of the two assessment techniques were evaluated using intra-class correlation coefficients (ICCs), limits of agreement, standard error of measurement, and minimal detectable change statistics. RESULTS Mean age was 59.9 (standard deviation [SD], 10.5) years, 68.8% were male, average duration of diabetes was 20.6 (SD, 15.1) years, 71.9% had type 2 diabetes, 93.8% had peripheral neuropathy, 43.8% had peripheral arterial disease, and 50% had previous foot ulceration. Charcot foot most commonly affected the tarsometatarsal joints (38.9%), had a median duration of 2.8 (interquartile range [IQR], 1.3 to 5.9) months, and a large proportion were being treated with total contact casting (69.4%). Overall, there was good to excellent intra-rater and inter-rater relative reliability for the 'touch' technique (ICC, 0.87 to 0.99; ICC, 0.83 to 0.98, respectively), and excellent intra-rater and inter-rater relative reliability for the 'non-touch' technique (ICC, 0.93 to 0.99; ICC, 0.91 to 0.99, respectively). In addition, measurement error was found to be relatively low across the 10 anatomical sites. CONCLUSIONS Infrared dermal thermometry can now be used with confidence in clinical and research settings to provide a reliable assessment of skin temperature in patients with Charcot neuroarthropathy, using either a touch or non-touch technique at 10 commonly used testing sites. A non-touch technique, however, was observed to have slightly higher reliability indicating it may be associated with less measurement error than the touch technique.
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Affiliation(s)
- Sarah M Dallimore
- Department of Podiatry, Eastern Health, Melbourne, Victoria, 3128, Australia
| | - Nicholas Puli
- Department of Podiatry, Eastern Health, Melbourne, Victoria, 3128, Australia.,Department of Podiatry, Alfred Health, Melbourne, Victoria, 3004, Australia.,Department of Quality Planning and Innovation, Eastern Health, Melbourne, Victoria, 3128, Australia
| | - Daniel Kim
- Department of Quality Planning and Innovation, Eastern Health, Melbourne, Victoria, 3128, Australia
| | - Michelle R Kaminski
- Discipline of Podiatry, School of Allied Health, Human Services and Sport, La Trobe University, Melbourne, Victoria, 3086, Australia. .,Department of Podiatry, St Vincent's Hospital Melbourne, Melbourne, Victoria, 3065, Australia.
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26
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Allison GM, Flanagin E. How ESKD complicates the management of diabetic foot ulcers: The vital role of the dialysis team in prevention, early detection, and support of multidisciplinary treatment to reduce lower extremity amputations. Semin Dial 2020; 33:245-253. [PMID: 32277523 DOI: 10.1111/sdi.12875] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Diabetic foot ulcers do not heal as well in ESKD as in the absence of kidney failure, and rates of recurrent foot ulcers, as well as lower extremity amputation, are higher. This review of the literature highlights the vital role of the dialysis team in prevention, early detection, and support of treatment of diabetic foot ulcers. Our review has five goals-(a) increase nephrologists' understanding of the high morbidity and mortality associated with chronic foot ulcers and (lower extrimity) LE amputations in ESKD; (b) promote nephrologists' understanding of grading systems for diabetic foot ulcer severity, in order to expedite communication with local diabetic foot experts; (c) promote collaboration between nephrologists and infectious disease specialists regarding the dose, route, and delivery logistics of intravenous antibiotics for infected chronic foot ulcers, in particular in the presence of osteomyelitis and other deep-seated infections; (d) increase the awareness of dialysis nurses, technicians, dietitians, social workers and administrators regarding evidence-based and multidisciplinary approaches to patients' diabetic foot ulcers; (e) encourage the application of published works integrating patient-centered diabetic foot education into the dialysis setting to reduce lower extremity amputations.
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Affiliation(s)
- Genève M Allison
- Division of Geographic Medicine and Infectious Diseases, Tufts Medical Center, Boston, MA, USA.,Center for Wound Healing and Hyperbaric Medicine, Tufts Medical Center, Boston, MA, USA
| | - Erin Flanagin
- Division of Nephrology, Tufts Medical Center, Boston, MA, USA
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27
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van Netten JJ, Raspovic A, Lavery LA, Monteiro-Soares M, Rasmussen A, Sacco ICN, Bus SA. Prevention of foot ulcers in the at-risk patient with diabetes: a systematic review. Diabetes Metab Res Rev 2020; 36 Suppl 1:e3270. [PMID: 31957213 DOI: 10.1002/dmrr.3270] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2019] [Revised: 09/01/2019] [Accepted: 09/19/2019] [Indexed: 12/26/2022]
Abstract
Prevention of foot ulcers in patients with diabetes is important to help reduce the substantial burden on both patient and health resources. A comprehensive analysis of reported interventions is needed to better inform healthcare professionals about effective prevention. The aim of this systematic review is to investigate the effectiveness of interventions to help prevent both first and recurrent foot ulcers in persons with diabetes who are at risk for this complication. We searched the available medical scientific literature in PubMed, EMBASE, CINAHL, and the Cochrane databases for original research studies on preventative interventions. We screened trial registries for additional studies not found in our search and unpublished trials. Two independent reviewers assessed data from controlled studies for methodological quality, and extracted and presented this in evidence and risk of bias tables. From the 13,490 records screened, 35 controlled studies and 46 non-controlled studies were included. Few controlled studies, which were of generally low to moderate quality, were identified on the prevention of a first foot ulcer. For the prevention of recurrent plantar foot ulcers, there is benefit for the use of daily foot skin temperature measurements, and for therapeutic footwear with demonstrated plantar pressure relief, provided it is consistently worn by the patient. For prevention of ulcer recurrence, there is some evidence for providing integrated foot care, and no evidence for a single session of education.Surgical interventions have been shown effective in selected patients, but the evidence base is small. Foot-related exercises do not appear to prevent a first foot ulcer. A small increase in the level of weight-bearing daily activities does not seem to increase the risk for foot ulceration. The evidence base to support the use of specific self-management and footwear interventions for the prevention of recurrent plantar foot ulcers is quite strong. The evidence is weak for the use of other, sometimes widely applied, interventions, and is practically non-existent for the prevention of a first foot ulcer and non-plantar foot ulcer.
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Affiliation(s)
- Jaap J van Netten
- Amsterdam UMC, University of Amsterdam, Department of Rehabilitation Medicine, Amsterdam Movement Sciences, Meibergdreef 9, Amsterdam, The Netherlands
- School of Clinical Sciences, Queensland University of Technology, Brisbane, Queensland, Australia
- Diabetic Foot Clinic, Department of Surgery, Ziekenhuisgroep Twente, Almelo, The Netherlands
| | - Anita Raspovic
- Discipline of Podiatry, School of Allied Health, Human Services and Sport, La Trobe University, Melbourne, Victoria, Australia
| | - Lawrence A Lavery
- Department of Plastic Surgery, University of Texas Southwestern Medical Center, Dallas, Texas
| | - Matilde Monteiro-Soares
- MEDCIDES: Departamento de Medicina da Comunidade Informação e Decisão em Saúde & CINTESIS - Center for Health Technology and Services Research, Faculdade de Medicina, Universidade do Porto, Porto, Portugal
| | | | - Isabel C N Sacco
- Physical Therapy, Speech and Occupational Therapy Department, School of Medicine, University of São Paulo, São Paulo, Brazil
| | - Sicco A Bus
- Amsterdam UMC, University of Amsterdam, Department of Rehabilitation Medicine, Amsterdam Movement Sciences, Meibergdreef 9, Amsterdam, The Netherlands
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McIntyre D, Coyer F, Bonner A. Identifying nurse sensitive indicators specific to haemodialysis nursing: A Delphi approach. Collegian 2020. [DOI: 10.1016/j.colegn.2019.06.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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29
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Corneal nerve fiber loss in diabetes with chronic kidney disease. Ocul Surf 2019; 18:178-185. [PMID: 31770601 DOI: 10.1016/j.jtos.2019.11.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2019] [Revised: 11/15/2019] [Accepted: 11/22/2019] [Indexed: 12/19/2022]
Abstract
AIMS Patients with chronic kidney disease (CKD) in type 2 diabetes typically manifest with severe peripheral neuropathy. Corneal confocal microscopy is a novel technique that may serve as a marker of nerve injury in peripheral neuropathy. This study examines the changes that occur in corneal nerve morphology as a result of peripheral neuropathy due to renal dysfunction in people with type 2 diabetes. METHODS Sixty-two participants (mean age, 62 ± 12 years) with type 2 diabetes and 25 age-matched healthy controls underwent a comprehensive assessment of neuropathy using the total neuropathy score (TNS). The corneal sub-basal nerve plexus was imaged using corneal confocal microscopy. Corneal nerve fiber length, fiber density, branch density, total branch density, nerve fractal dimension, inferior whorl length and inferior whorl nerve fractal dimension were quantified. Based on the eGFR, participants were classified into those with diabetic CKD (eGFR < 60; n = 22) and those without CKD (eGFR ≥ 60; n = 40). RESULTS Participants with diabetic CKD had significantly lower corneal nerve fiber density (P = 0.037), length (P = 0.036) and nerve fractal dimension (P = 0.036) compared to those without CKD. Multiple linear regression analysis revealed that reduced corneal nerve fiber density (ß coefficient = 0.098, P = 0.017), length (ß coefficient = 0.006, P = 0.008) and nerve fractal dimension (ß coefficient = 0.001, P = 0.007) was associated with low eGFR levels when adjusted for age, duration of diabetes and severity of neuropathy. CONCLUSION Corneal confocal microscopy detects corneal nerve loss in patients with diabetic CKD and reduction in corneal nerve parameters is associated with the decline of kidney function.
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Kaminski MR, Lambert KA, Raspovic A, McMahon LP, Erbas B, Mount PF, Kerr PG, Landorf KB. Risk factors for foot ulceration in adults with end-stage renal disease on dialysis: a prospective observational cohort study. BMC Nephrol 2019; 20:423. [PMID: 31752749 PMCID: PMC6868750 DOI: 10.1186/s12882-019-1594-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Accepted: 10/15/2019] [Indexed: 12/30/2022] Open
Abstract
Background Dialysis patients experience high rates of foot ulceration. Although risk factors for ulceration have been extensively studied in patients with diabetes, there is limited high-quality, longitudinal evidence in the dialysis population. Therefore, this study investigated risk factors for foot ulceration in a stable dialysis cohort. Methods We prospectively collected clinical, demographic, health status, and foot examination information on 450 adults with end-stage renal disease from satellite and home-therapy dialysis units in Melbourne, Australia over 12 months. The primary outcome was foot ulceration. Cox proportional hazard modelling and multinomial regression were used to investigate risk factors. Results Among 450 dialysis patients (mean age, 67.5 years; 64.7% male; 94% hemodialysis; 50.2% diabetes), new cases of foot ulceration were identified in 81 (18%) participants. Overall, risk factors for foot ulceration were neuropathy (HR 3.02; 95% CI 1.48 to 6.15) and previous ulceration (HR 2.86; CI 1.53 to 5.34). In those without history of ulceration, nail pathology (RR 3.85; CI 1.08 to 13.75) and neuropathy (RR 2.66; CI 1.04 to 6.82) were risk factors. In those with history of ulceration, neuropathy (RR 11.23; CI 3.16 to 39.87), peripheral arterial disease (RR 7.15; CI 2.24 to 22.82) and cerebrovascular disease (RR 2.08; CI 1.04 to 4.16) were risk factors. There were 12 (2.7%) new amputations, 96 (21.3%) infections, 24 (5.3%) revascularizations, 42 (9.3%) foot-related hospitalizations, and 52 (11.6%) deaths. Conclusions Neuropathy and previous ulceration are major risk factors for foot ulceration in dialysis patients. Risk factors differ between those with and without prior ulceration. The risk factors identified will help to reduce the incidence of ulceration and its associated complications.
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Affiliation(s)
- Michelle R Kaminski
- Discipline of Podiatry, School of Allied Health, Health Services and Sport, La Trobe University, Melbourne, Victoria, 3086, Australia.
| | - Katrina A Lambert
- Department of Public Health, School of Psychology and Public Health, La Trobe University, Victoria, 3086, Australia
| | - Anita Raspovic
- Discipline of Podiatry, School of Allied Health, Health Services and Sport, La Trobe University, Melbourne, Victoria, 3086, Australia
| | - Lawrence P McMahon
- Departments of Renal Medicine & Obstetric Medicine, Eastern Health Clinical School, Monash University, Melbourne, Victoria, 3128, Australia
| | - Bircan Erbas
- Department of Public Health, School of Psychology and Public Health, La Trobe University, Victoria, 3086, Australia
| | - Peter F Mount
- Department of Nephrology, Austin Health, University of Melbourne, Heidelberg, Victoria, 3084, Australia
| | - Peter G Kerr
- Department of Nephrology, Monash Health, Melbourne, Victoria, 3168, Australia
| | - Karl B Landorf
- Discipline of Podiatry, School of Allied Health, Health Services and Sport, La Trobe University, Melbourne, Victoria, 3086, Australia.,La Trobe Sport and Exercise Medicine Research Centre, School of Allied Health, Health Services and Sport, La Trobe University, Victoria, 3086, Australia
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31
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Berru FN, Gray SE, Thome T, Kumar RA, Salyers ZR, Coleman M, Dennis Le, O'Malley K, Ferreira LF, Berceli SA, Scali ST, Ryan TE. Chronic kidney disease exacerbates ischemic limb myopathy in mice via altered mitochondrial energetics. Sci Rep 2019; 9:15547. [PMID: 31664123 PMCID: PMC6820860 DOI: 10.1038/s41598-019-52107-7] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Accepted: 10/12/2019] [Indexed: 02/07/2023] Open
Abstract
Chronic kidney disease (CKD) substantially increases the severity of peripheral arterial disease (PAD) symptomology, however, the biological mechanisms remain unclear. The objective herein was to determine the impact of CKD on PAD pathology in mice. C57BL6/J mice were subjected to a diet-induced model of CKD by delivery of adenine for six weeks. CKD was confirmed by measurements of glomerular filtration rate, blood urea nitrogen, and kidney histopathology. Mice with CKD displayed lower muscle force production and greater ischemic lesions in the tibialis anterior muscle (78.1 ± 14.5% vs. 2.5 ± 0.5% in control mice, P < 0.0001, N = 5-10/group) and decreased myofiber size (1661 ± 134 μm2 vs. 2221 ± 100 μm2 in control mice, P < 0.01, N = 5-10/group). This skeletal myopathy occurred despite normal capillary density (516 ± 59 vs. 466 ± 45 capillaries/20x field of view) and limb perfusion. CKD mice displayed a ~50-65% reduction in muscle mitochondrial respiratory capacity in ischemic muscle, whereas control mice had normal mitochondrial function. Hydrogen peroxide emission was modestly higher in the ischemic muscle of CKD mice, which coincided with decreased oxidant buffering. Exposure of cultured myotubes to CKD serum resulted in myotube atrophy and elevated oxidative stress, which were attenuated by mitochondrial-targeted therapies. Taken together, these findings suggest that mitochondrial impairments caused by CKD contribute to the exacerbation of ischemic pathology.
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Affiliation(s)
- Fabian N Berru
- Department of Applied Physiology and Kinesiology, University of Florida, Gainesville, FL, USA
| | - Sarah E Gray
- Division of Vascular Surgery and Endovascular Therapy, University of Florida, Gainesville, FL, USA
- Malcolm Randall Veteran Affairs Medical Center, Gainesville, FL, USA
| | - Trace Thome
- Department of Applied Physiology and Kinesiology, University of Florida, Gainesville, FL, USA
| | - Ravi A Kumar
- Department of Applied Physiology and Kinesiology, University of Florida, Gainesville, FL, USA
| | - Zachary R Salyers
- Department of Applied Physiology and Kinesiology, University of Florida, Gainesville, FL, USA
| | - Madeline Coleman
- Department of Applied Physiology and Kinesiology, University of Florida, Gainesville, FL, USA
| | - Dennis Le
- Department of Applied Physiology and Kinesiology, University of Florida, Gainesville, FL, USA
| | - Kerri O'Malley
- Division of Vascular Surgery and Endovascular Therapy, University of Florida, Gainesville, FL, USA
- Malcolm Randall Veteran Affairs Medical Center, Gainesville, FL, USA
| | - Leonardo F Ferreira
- Department of Applied Physiology and Kinesiology, University of Florida, Gainesville, FL, USA
- Center for Exercise Science, University of Florida, Gainesville, FL, USA
| | - Scott A Berceli
- Division of Vascular Surgery and Endovascular Therapy, University of Florida, Gainesville, FL, USA
- Malcolm Randall Veteran Affairs Medical Center, Gainesville, FL, USA
| | - Salvatore T Scali
- Division of Vascular Surgery and Endovascular Therapy, University of Florida, Gainesville, FL, USA
- Malcolm Randall Veteran Affairs Medical Center, Gainesville, FL, USA
| | - Terence E Ryan
- Department of Applied Physiology and Kinesiology, University of Florida, Gainesville, FL, USA.
- Center for Exercise Science, University of Florida, Gainesville, FL, USA.
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Ólafsdóttir AF, Svensson AM, Pivodic A, Gudbjörnsdottir S, Nyström T, Wedel H, Rosengren A, Lind M. Excess risk of lower extremity amputations in people with type 1 diabetes compared with the general population: amputations and type 1 diabetes. BMJ Open Diabetes Res Care 2019; 7:e000602. [PMID: 31114696 PMCID: PMC6501853 DOI: 10.1136/bmjdrc-2018-000602] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Revised: 01/04/2019] [Accepted: 01/29/2019] [Indexed: 01/08/2023] Open
Abstract
OBJECTIVE This study investigates how the excess risk of lower extremity amputations (amputations) in people with type 1 diabetes mellitus (DM) differs from the general population by diabetes duration, glycemic control, and renal complications. RESEARCH DESIGN AND METHODS We analyzed data from people with type 1 DM from the Swedish National Diabetes Register without prior amputation from January 1998 to December 2013. Each person (n=36 872) was randomly matched with five controls by sex, age, and county (n=184 360) from the population without diabetes. All were followed until first amputation, death or end of follow-up. RESULTS The overall adjusted HR for all amputation was 40.1 (95% CI 32.8 to 49.1) for type 1 DM versus controls. HR increased with longer diabetes duration. The incidence of amputation/1000 patient-years was 3.18 (95% CI 2.99 to 3.38) for type 1 DM and 0.07 (95% CI 0.05 to 0.08) for controls. The incidence decreased from 1998-2001 (3.09, 95% CI 2.56 to 3.62) to 2011-2013 (2.64, 95% CI 2.31 to 2.98). The HR for major amputations was lower than for minor amputations and decreased over the time period (p=0.0045). Worsening in glycemic control among patients with diabetes led to increased risk for amputation with an HR of 1.80 (95% CI 1.72 to 1.88) per 10 mmol/mol (1%) increase in hemoglobin A1c. CONCLUSIONS Although the absolute risk of amputation is relatively low, the overall excess risk was 40 times that of controls. Excess risk was substantially lower for those with good glycemic control and without renal complications, but excess risk still existed and is greatest for minor amputations.
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Affiliation(s)
- Arndís Finna Ólafsdóttir
- Department of Medicine, NU Hospital Group, Uddevalla, Sweden
- Department of Molecular and Clinical Medicine, University of Gothenburg, Gothenburg, Sweden
| | - Ann-Marie Svensson
- Department of Molecular and Clinical Medicine, University of Gothenburg, Gothenburg, Sweden
- Centre of Registers in Region Västra Götaland, Gothenburg, Sweden
| | | | - Soffia Gudbjörnsdottir
- Department of Molecular and Clinical Medicine, University of Gothenburg, Gothenburg, Sweden
- Centre of Registers in Region Västra Götaland, Gothenburg, Sweden
| | - Thomas Nyström
- Department of Clinical Science and Education, Södersjukhuset, Karolinska Institutet, Stockholm, Sweden
| | - Hans Wedel
- Department of Health Metrics, Health Metrics Sahlgrenska Academy, Gothenburg, Sweden
| | - Annika Rosengren
- Department of Molecular and Clinical Medicine, University of Gothenburg, Gothenburg, Sweden
| | - Marcus Lind
- Department of Medicine, NU Hospital Group, Uddevalla, Sweden
- Department of Molecular and Clinical Medicine, University of Gothenburg, Gothenburg, Sweden
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Franz D, Zheng Y, Leeper NJ, Chandra V, Montez-Rath M, Chang TI. Trends in Rates of Lower Extremity Amputation Among Patients With End-stage Renal Disease Who Receive Dialysis. JAMA Intern Med 2018; 178:1025-1032. [PMID: 29987332 PMCID: PMC6143114 DOI: 10.1001/jamainternmed.2018.2436] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
IMPORTANCE Patients with end-stage renal disease (ESRD) who receive dialysis are at high risk of lower extremity amputation. Recent studies indicate decreasing rates of lower extremity amputation in non-ESRD populations, but contemporary data for patients with ESRD who receive dialysis are lacking. OBJECTIVES To assess rates of lower extremity amputation among patients with ESRD who receive dialysis during a recent 15-year period; to analyze whether those rates differed by age, sex, diabetes, or geographic region; and to determine 1-year mortality rates in this population after lower extremity amputation. DESIGN, SETTING, AND PARTICIPANTS This retrospective study of 3 700 902 records obtained from a US national registry of patients with ESRD who receive dialysis assessed cross-sectional cohorts for each calendar year from 2000 through 2014. Adult patients with prevalent ESRD treated with hemodialysis or peritoneal dialysis covered by Medicare Part A and B on January 1 of each cohort year were included. Data analysis was conducted from August 2017 to April 2018. EXPOSURES Age, sex, diabetes, and hospital referral region. MAIN OUTCOMES AND MEASURES Annual rates per 100 person-years of nontraumatic major (above- or below-knee) and minor (below-ankle) amputations. RESULTS For each annual cohort, there were fewer women (47.5% in 2000, 46.2% in 2005, 44.9% in 2010, and 44.0% in 2014) than men, more than half the patients were white individuals (58.1% in 2000, 56.9% in 2005, 56.9% in 2010, and 56.7% in 2014), and a small proportion were employed (13.9% in 2000, 15.1% in 2005, 16.1% in 2010, and 16.5% in 2014). The rate of lower extremity amputations for patients with ESRD who receive dialysis decreased by 51.0% from 2000 to 2014, driven primarily by a decrease in the rate of major amputations (5.42 [95% CI, 5.28-5.56] in 2000 vs 2.66 [95% CI, 2.59-2.72] per 100 person-years in 2014). Patients with diabetes had amputation rates more than 5 times as high as patients without diabetes. Patients younger than 65 years had higher adjusted amputation rates than older patients, and men had consistently higher adjusted amputation rates than women. Adjusted 1-year mortality rates after lower extremity amputation for patients with ESRD who receive dialysis decreased from 52.2% (95% CI, 50.9%-53.4%) in 2000 to 43.6% (95% CI, 42.5%-44.8%) in 2013. In general, amputation rates decreased among all regions from 2000 to 2014, but regional variability persisted across time despite adjustment for differences in patient demographics and comorbid conditions. CONCLUSIONS AND RELEVANCE Although rates of lower extremity amputations among US patients with ESRD who receive dialysis decreased by 51% during a recent 15-year period, mortality rates remained high, with nearly half of patients dying within a year after lower extremity amputation. Our results highlight the need for more research on ways to prevent lower extremity amputation in this extremely high-risk population.
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Affiliation(s)
- Douglas Franz
- Division of Nephrology, Department of Medicine, Stanford University, Stanford, California
| | - Yuanchao Zheng
- Division of Nephrology, Department of Medicine, Stanford University, Stanford, California
| | - Nicholas J Leeper
- Division of Vascular Surgery, Department of Surgery, Stanford University, Stanford, California.,Division of Cardiovascular Medicine, Department of Medicine, Stanford University, Stanford, California
| | - Venita Chandra
- Division of Vascular Surgery, Department of Surgery, Stanford University, Stanford, California
| | - Maria Montez-Rath
- Division of Nephrology, Department of Medicine, Stanford University, Stanford, California
| | - Tara I Chang
- Division of Nephrology, Department of Medicine, Stanford University, Stanford, California
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Park KH, Han SH, Hong JP, Han SK, Lee DH, Kim BS, Ahn JH, Lee JW. Topical epidermal growth factor spray for the treatment of chronic diabetic foot ulcers: A phase III multicenter, double-blind, randomized, placebo-controlled trial. Diabetes Res Clin Pract 2018; 142:335-344. [PMID: 29902542 DOI: 10.1016/j.diabres.2018.06.002] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Revised: 05/28/2018] [Accepted: 06/06/2018] [Indexed: 12/24/2022]
Abstract
AIMS This study was conducted to evaluate the efficacy and safety of a novel spray-applied growth factor therapy containing recombinant human epidermal growth factor (rhEGF) for the treatment of chronic diabetic foot ulcers (DFU). METHODS This study was a phase III double-blind, randomized, placebo-controlled trial. 167 adult patients at six medical centers were randomized to receive routine wound care plus either topical spray treatment with 0.005% rhEGF (n = 82) or an equivalent volume of saline spray (n = 85) twice a day until ulcer healing or for up to 12 weeks. RESULTS Demographics, medical status, and wound characteristics were comparable between rhEGF and placebo groups. More patients in the rhEGF group significantly had complete wound healing compared to placebo (73.2% versus 50.6%, respectively; P = .001). Wound healing velocity was faster in the rhEGF group (P = .029) regardless of HbA1c levels. The rhEGF group had a shorter median time to 50% ulcer size reduction (21 versus 35 days; hazard ratio = 3.13, P < .001) and shorter time to complete ulcer healing (56 versus 84 days; hazard ratio = 2.13, P < .001). CONCLUSIONS This study confirms that application of spray-applied rhEGF in DFU patients results in faster healing velocity and higher complete healing rate regardless of HbA1c levels.
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Affiliation(s)
- Kwang Hwan Park
- Department of Orthopaedic Surgery, Yonsei University College of Medicine, Seoul, South Korea
| | - Seung Hwan Han
- Department of Orthopaedic Surgery, Yonsei University College of Medicine, Seoul, South Korea
| | - Joon Pio Hong
- Department of Plastic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Seung-Kyu Han
- Department of Plastic Surgery, Korea University Guro Hospital, Seoul, South Korea
| | - Doo-Hyung Lee
- Department of Orthopaedic Surgery, School of Medicine, Ajou University, Suwon, South Korea
| | - Bom Soo Kim
- Department of Orthopaedic Surgery, Inha University College of Medicine, Incheon, South Korea
| | - Jae Hoon Ahn
- Department of Orthopaedic Surgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Jin Woo Lee
- Department of Orthopaedic Surgery, Yonsei University College of Medicine, Seoul, South Korea.
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Schneider F, Saulnier PJ, Gand E, Desvergnes M, Lefort N, Thorin E, Thorin-Trescases N, Mohammedi K, Ragot S, Ricco JB, Hadjadj S. Influence of micro- and macro-vascular disease and Tumor Necrosis Factor Receptor 1 on the level of lower-extremity amputation in patients with type 2 diabetes. Cardiovasc Diabetol 2018; 17:81. [PMID: 29879997 PMCID: PMC5992642 DOI: 10.1186/s12933-018-0725-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2018] [Accepted: 05/26/2018] [Indexed: 01/03/2023] Open
Abstract
BACKGROUND Patients with type 2 diabetes (T2D) face a high amputation rate. We investigated the relationship between the level of amputation and the presence of micro or macro-vascular disease and related circulating biomarkers, Tumor Necrosis Factor Receptor 1 (TNFR1) and Angiopoietin like-2 protein (ANGPTL2). METHODS We have analyzed data from 1468 T2D participants in a single center prospective cohort (the SURDIAGENE cohort). Our outcome was the occurrence of lower limb amputation categorized in minor (below-ankle) or major (above ankle) amputation. Microvascular disease was defined as a history of albuminuria [microalbuminuria: uACR (urinary albumine-to-creatinine ratio) 30-299 mg/g or macroalbuminuria: uACR ≥ 300 mg/g] and/or severe diabetic retinopathy or macular edema. Macrovascular disease at baseline was divided into peripheral arterial disease (PAD): peripheral artery revascularization and/or major amputation and in non-peripheral macrovascular disease: coronary artery revascularization, myocardial infarction, carotid artery revascularization, stroke. We used a proportional hazard model considering survival without minor or major amputation. RESULTS During a median follow-up period of 7 (0.5) years, 79 patients (5.5%) underwent amputation including 29 minor and 50 major amputations. History of PAD (HR 4.37 95% CI [2.11-9.07]; p < 0.001), severe diabetic retinopathy (2.69 [1.31-5.57]; p = 0.0073), male gender (10.12 [2.41-42.56]; p = 0.0016) and serum ANGPTL2 concentrations (1.25 [1.08-1.45]; p = 0.0025) were associated with minor amputation outcome. History of PAD (6.91 [3.75-12.72]; p < 0.0001), systolic blood pressure (1.02 [1.00-1.03]; p = 0.004), male gender (3.81 [1.67-8.71]; p = 0.002), and serum TNFR1 concentrations (HR 13.68 [5.57-33.59]; p < 0.0001) were associated with major amputation outcome. Urinary albumin excretion was not significantly associated with the risk of minor and major amputation. CONCLUSIONS This study suggests that the risk factors associated with the minor vs. major amputation including biomarkers such as TNFR1 should be considered differently in patients with T2D.
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Affiliation(s)
- Fabrice Schneider
- Service de Chirurgie Vasculaire, CHU de Poitiers, Rue de la Milétrie, BP577, 86021, Poitiers, France. .,UFR de Médecine et Pharmacie, Université de Poitiers, Poitiers, France.
| | - Pierre-Jean Saulnier
- Centre d'Investigation Clinique CIC1402, INSERM, Université de Poitiers, CHU de Poitiers, Poitiers, France
| | - Elise Gand
- CHU de Poitiers, Pôle Dune, Poitiers, France
| | - Mathieu Desvergnes
- Service de Chirurgie Vasculaire, CHU de Poitiers, Rue de la Milétrie, BP577, 86021, Poitiers, France
| | - Nicolas Lefort
- Service de Chirurgie Vasculaire, CHU de Poitiers, Rue de la Milétrie, BP577, 86021, Poitiers, France
| | - Eric Thorin
- Department of Surgery, Faculty of Medicine, Montreal Heart Institute, Université de Montréal, Montreal, QC, Canada
| | - Nathalie Thorin-Trescases
- Department of Surgery, Faculty of Medicine, Montreal Heart Institute, Université de Montréal, Montreal, QC, Canada
| | | | - Stéphanie Ragot
- Centre d'Investigation Clinique CIC1402, INSERM, Université de Poitiers, CHU de Poitiers, Poitiers, France
| | - Jean-Baptiste Ricco
- Service de Chirurgie Vasculaire, CHU de Poitiers, Rue de la Milétrie, BP577, 86021, Poitiers, France.,UFR de Médecine et Pharmacie, Université de Poitiers, Poitiers, France
| | - Samy Hadjadj
- Centre d'Investigation Clinique CIC1402, INSERM, Université de Poitiers, CHU de Poitiers, Poitiers, France.,Service d'Endocrinologie, CHU de Poitiers, Poitiers, France
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