Publications by authors named "Kamyar Kalantar-Zadeh"

This review elucidates the critical role of inter-organ crosstalk in systemic health, focusing on the kidney's interactions with the heart, bone marrow, lung, liver, intestine, bone-vascular, and nervous system. These interactions are vital for maintaining physiological homeostasis and are mediated by hormones, cytokines, and metabolites. The kidney's role in these networks is pivotal, as dysfunction can exacerbate systemic diseases, highlighting the need for integrated therapeutic strategies.

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More than 850 million individuals worldwide, accounting for 10-15% of the adult population, are estimated to have chronic kidney disease. Each of these individuals is host to tens of trillions of microorganisms that are collectively referred to as microbiota - a dynamic ecosystem that both influences host health and is itself influenced by changes in the host. Available evidence supports the existence of functional connections between resident microorganisms and kidney health that are altered in the context of specific kidney diseases, including acute kidney injury, chronic kidney disease and renal stone disease.

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Objectives: Gastrointestinal symptoms can significantly impact patients' nutritional status. Effective management using antiemetics is crucial for maintaining adequate nutrition. However, the effect of antiemetics on long-term renal function remains unclear.

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Rationale & Objective: While sleep disorders are common in patients treated with hemodialysis, the impact of sleep patterns on survival is not well defined. We thus examined the association of specific sleep patterns with mortality in this population.

Study Design: An observational cohort study.

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Protein intake is crucial to maintain human health, and an adequate quantity and quality of dietary protein intake (DPI) is particularly important in patients with CKD. Both an insufficient amount of DPI ( i.e .

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Attention is increasingly turning toward the individualization of hemodialysis prescriptions through an incremental start. This approach prioritizes the patient's clinical needs over rigid metrics like dialysis urea depuration, begins with fewer sessions (1 or 2 per week), and gradually increases in frequency and/or duration based on the patient's evolving clinical condition. Clinical manifestations related to uremia are managed through a combination of residual kidney function, dialysis, dietary modification, and medications.

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Objective: This study aimed to investigate changes in nutritional markers in patients with predialysis chronic kidney disease (CKD) and stable body mass index (BMI).

Methods: We analyzed data from a nationwide cohort of US Veterans with advanced CKD who transitioned to kidney replacement therapy from October 1, 2007, through March 31, 2015. We identified 20,164 U.

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Purpose: This study cross-sectionally surveyed patients with primary focal segmental glomerulosclerosis (FSGS) and their caregivers/care-partners, in terms of physical and mental health-related quality of life (HRQoL) and work productivity.

Methods: HRQoL instruments, including the KDQoL-36 (with SF-12 v2), PedsQL (v4.0, parent proxy for children/adolescents), GAD-7 (anxiety), PHQ-9 (depression), and WPAI: SHP (work productivity), were used in the study.

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Key Points: In this large national cohort of United States veterans followed over 14 years, fibrate was associated with a higher risk of incident CKD. Fibrate use was also associated with a lower risk of ESKD and all-cause mortality. Considering the potential long-term benefits, clinicians should not necessarily avoid fibrate use, with careful monitoring of kidney function.

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Purpose Of Review: Online hemodiafiltration (OL-HDF) is a type of outpatient intermittent dialysis therapy using purified online dialysis fluid sourced from the city water supply. OL-HDF has been widely practiced in Europe and Japan, and its clinical effects have been reported for prevention of dialysis amyloidosis, inflammation, and dialysis hypotension.

Recent Findings: A randomized controlled trial of all-cause mortality in postdilution OL-HDF and high-flux hemodialysis groups with replacement fluid volumes >23 l/session (CONVINCE study) reported a lower risk of all-cause mortality with OL-HDF compared to conventional hemodialysis.

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Key Points: Growing interest in health-related quality of life underscores the need to explore patient satisfaction among diverse dialysis populations. In this study, patient ethnicity in Israel showed no significant effect on satisfaction, mortality, or transplantation outcomes. Dialysis vintage and patient age were key predictors of satisfaction and survival, highlighting areas for targeted interventions.

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Introduction: Niacin is a non-statin lipid-lowering therapy that has been shown to lower triglycerides and improve other risk factors for renal outcomes. Despite these favorable data, the effect of niacin on long-term kidney outcomes remains unclear. The aim of this study was to examine the associations of niacin therapies with incident chronic kidney disease (CKD), end-stage renal disease (ESRD), and death in patients with estimated glomerular filtration rate (eGFR) of at least 60 mL/min/1.

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This report represents the conclusions of 15 experts in nephrology and endocrinology, based on their knowledge of key studies and evidence in the field, on the role of continuous glucose monitors (CGMs) in patients with diabetes and chronic kidney disease (CKD), including those receiving dialysis. The experts discussed issues related to CGM accuracy, indications, education, clinical outcomes, quality of life, research gaps, and barriers to dissemination. Three main goals of management for patients with CKD and diabetes were identified: (1) greater use of CGMs for better glycemic monitoring and management, (2) further research evaluating the accuracy, feasibility, outcomes, and potential value of CGMs in patients with end-stage kidney disease (ESKD) on hemodialysis, and (3) equitable access to CGM technology for patients with CKD.

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Article Synopsis
  • Protein-energy wasting (PEW) is a significant issue in patients with chronic kidney disease (CKD), especially as the disease advances, leading to increased risks of hospitalization and mortality.
  • Research indicates that low levels of serum albumin, body mass index (BMI), and inadequate dietary intake of energy and protein are linked to the progression of CKD.
  • Effective management of PEW may involve a tailored nutrition plan, including a moderately low protein diet and appropriate supplementation, alongside addressing other health conditions and lifestyle factors.
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Article Synopsis
  • * Effective management of CKD involves integrated approaches, including risk assessment, patient education, and collaboration with specialists, all aimed at slowing disease progression and ensuring equitable access to treatments like home dialysis and kidney transplants.
  • * Urban safety-net systems prioritize early detection and comprehensive care for CKD, striving to improve outcomes and quality of life for underserved groups through tailored health strategies and shared decision-making.
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Purpose Of Review: Initiation of hemodialysis treatment with a thrice-weekly prescription is currently the standard of care irrespective of patients' residual kidney function (RKF), comorbidities, and preferences.

Recent Findings: Each year ∼12 000 Veterans with advanced kidney disease progress to end-stage kidney disease (ESKD) requiring dialysis and comprise greater than 10% of the US incident ESKD population. Dialysis is costly and is associated with impaired health-related quality of life (HRQOL) and high mortality risk, especially in the first year of treatment.

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Article Synopsis
  • Chronic kidney disease (CKD) affects 1 in 10 adults, especially vulnerable populations like low-income individuals and racial/ethnic minorities in urban areas with safety-net healthcare systems.
  • Los Angeles County exemplifies effective population health strategies in managing CKD through risk assessment, patient education, and partnerships, including innovations like eConsult and Precision Scheduling for timely nephrology referrals.
  • The focus on early detection and equitable access to treatments like home dialysis and kidney transplantation aims to improve health outcomes and quality of life for diverse, underserved communities.
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Purpose Of Review: The aim of this article is to review the current understanding of disparities in healthcare experienced by people living with kidney disease and emerging approaches to address root causes. Health equity for any disease state is an aspirational goal commonly sought out by the medical community, but all too often lacking the understanding and support required to improve the outcomes of people with complex conditions such as chronic kidney disease (CKD).

Recent Findings: The main themes of the literature covered in this article include a review of the structural drivers of healthcare outcomes, a description of research in the fields of health literacy and patient activation for patients with CKD, and an analysis of the examples of healthcare disparities in CKD patients that include involuntary discharges from dialysis facilities as well as the toll taken from dialysis populations during natural disasters.

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Purpose: This cross-sectional survey study quantified the humanistic burden of immunoglobulin A nephropathy (IgAN), in terms of physical and mental health-related quality of life (HRQoL) and work productivity, among adults with primary IgAN and their care-partners.

Methods: HRQoL was assessed (01/31/22 - 05/31/23) with validated tools including the KDQoL-36 (with SF-12), GAD-7 (anxiety), PHQ-9 (depression), and WPAI: SHP (work productivity). Participant characteristics and total/domain scores were summarized; selected outcomes were compared to an external, kidney disease-free cohort.

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