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Sympathetic Activity in Patients With End-stage Renal Disease on Peritoneal Dialysis (SAPD)

2021년 3월 11일 업데이트: Dr. Marcel Ruzicka, Ottawa Hospital Research Institute

Effects of Non-Glucose-Based Peritoneal Dialysis Solution "EXTRANEAL" on Changes in Leptin Levels and Sympathetic Activity Induced by Conventional Glucose-Based Dialysate "DIANEAL" in Patients on Peritoneal Dialysis

Hypothesis:

Patients starting peritoneal dialysis with a glucose-based regimen have high sympathetic activity in response to an increase in leptin and insulin. Converting patients from a regimen of only glucose containing dialysate to a regimen with non-glucose-based solution, icodextrin, will reduce the insulin and leptin levels and will reverse dialysis-induced increases in sympathetic activity.

연구 개요

상태

완전한

정황

개입 / 치료

상세 설명

Cardiovascular mortality remains higher among patients treated with peritoneal dialysis as compared to patients treated with hemodialysis. Sympathetic hyperactivity is considered a significant emerging risk factor for cardiovascular mortality among patients with ESRD (End-Stage Renal Disease). Sympathetic activity, via its hemodynamic effects and trophic effects, and in interaction with RAAS (Renin Angiotensin Aldosterone System), does play a major role in cardiac and vascular remodelling, development of LVH and vascular hypertrophy, as well as progression to CHF. Glucose-based dialysate induces hyperinsulinemia and hyperleptinemia. We propose that hyperleptinemia induced by glucose-based peritoneal solution is a significant contributing factor to sympathetic hyperactivity in ESRD patients treated with PD, and could be prevented by non-glucose-based PD solution such as icodextrin-based.

Adult patients with ESRD starting PD as their first renal replacement therapy modality will be studied. Patients will be recruited 1-3 weeks prior to starting PD treatment. At baseline, specific studies for microneurography (MSNA), fasting plasma insulin, leptin, catecholamines and brain natriuretic peptide (BNP) will be performed. EKG will be recorded and digitized for further assessment of heart rate variability using power spectral analysis. Extracellular fluid volume status will be assessed by bioelectrical impedance. Central vascular volume will be assessed from inferior vena cava (IVC) by heart ultrasound. Consequently 24-h ambulatory blood pressure monitoring(ABPM)and a 24-h urine collection for urea clearance and creatinine clearance will be done.

All participants into the study will receive a PD treatment for 6 weeks with standard glucose-based PD solution Dianeal. The specific studies are repeated at 6 weeks.Then, patients will be randomized to one of the two groups (arms). One group will continue with Dianeal PD solution for another 12 weeks. The other group will receive Dianeal during the day and Extraneal, icodextrin or non-glucose based solution, during the night only, for the next 12 weeks. The specific studies are repeated at 12 weeks after randomization (18 weeks of PD treatment).

연구 유형

중재적

등록 (실제)

50

단계

  • 4단계

연락처 및 위치

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연구 장소

  • 캐나다
    • Ontario
      • Ottawa, Ontario, 캐나다
        • Ottawa Hospital Research Institute

참여기준

연구원은 적격성 기준이라는 특정 설명에 맞는 사람을 찾습니다. 이러한 기준의 몇 가지 예는 개인의 일반적인 건강 상태 또는 이전 치료입니다.

자격 기준

공부할 수 있는 나이

18년 이상 (성인, 고령자)

건강한 자원 봉사자를 받아들입니다

아니

연구 대상 성별

모두

설명

Inclusion Criteria:

  • Adult (age 18 years and older)
  • Patients with end-stage renal disease(ESRD)/chronic kidney disease(CKD)stage 5

Exclusion Criteria:

  • Diabetes Mellitus
  • Acute coronary syndrome in the past 6 months
  • Cardiac arrhythmias (2nd and 3rd degree heart block or premature ventricular complexes in Lown classes 4 or 5)
  • Symptoms suggestive of obstructive or central sleep apnea (with a score of > 10 on Epworth sleepiness scale)
  • Patients taking Clonidine
  • Body mass index (BMI) > 34
  • Patients unable to give consent
  • Pregnant women
  • Patients with leg injury involving nerve damage
  • Patients taking anticoagulant medication
  • Patients with significant bleeding disorder or liver disorder
  • Hemoglobin <1.05 g/dl at the time of initiation of therapy
  • patients with unilateral or bilateral nephrectomy
  • Planned kidney transplant in the next 4 months
  • Life expectancy under 6 months
  • Oliguria (urine output less than 400 ml per day)

공부 계획

이 섹션에서는 연구 설계 방법과 연구가 측정하는 내용을 포함하여 연구 계획에 대한 세부 정보를 제공합니다.

연구는 어떻게 설계됩니까?

디자인 세부사항

  • 주 목적: 치료
  • 할당: 무작위
  • 중재 모델: 병렬 할당
  • 마스킹: 하나의

무기와 개입

참가자 그룹 / 팔
개입 / 치료
활성 비교기: DIANEAL
One group of patients will start peritoneal dialysis with the glucose-based solution (DIANEAL) for 6 weeks, then will continue with the same type of solution for another 12 weeks.
다른: DIANEAL

Weeks 1 to 6 (6 weeks):

  • CAPD (Continuous Ambulatory Peritoneal Dialysis)patients will receive three 4-6 hour dwells of DIANEAL during the day and one 8-10-hour dwell of DIANEAL during the night
  • CCPD (Continuous Cycler Peritoneal Dialysis)patients will receive one-two 4-6 hour dwells of DIANEAL during the day and three to seven 2-4-hour dwells of DIANEAL during the night

Weeks 7 to 18 (12 weeks):

*same regimen as weeks 1 to 6, for both CAPD and CCPD patients

다른 이름들:
  • Dextrose-based PD solution
활성 비교기: EXTRANEAL
The other group of patients will start peritoneal dialysis with the glucose-based solution (DIANEAL) for 6 weeks, then will continue with DIANEAL solution during the day and the non-glucose-based solution, EXTRANEAL, during the night
다른: EXTRANEAL

Weeks 1 to 6 (6 weeks):

  • CAPD (Continuous Ambulatory Peritoneal Dialysis)patients will receive three 4-6 hour dwells of DIANEAL during the day and one 8-10-hour dwell of DIANEAL during the night
  • CCPD (Continuous Cycler Peritoneal Dialysis)patients will receive one-two 8-12-hour dwells of DIANEAL during the day and three to seven 2-4-hour dwells of DIANEAL during the night

Weeks 7 to 18 (12 weeks):

  • CAPD (Continuous Ambulatory Peritoneal Dialysis)patients will receive three 4-6 hour dwells of DIANEAL during the day and one 8-10-hour dwell of EXTRANEAL during the night
  • CCPD (Continuous Cycler Peritoneal Dialysis)patients will receive one-two 8-12-hour dwells of DIANEAL during the day and one 8-12-hour dwell of EXTRANEAL during the night
다른 이름들:
  • Icodextrin-based PD solution

연구는 무엇을 측정합니까?

주요 결과 측정

결과 측정
측정값 설명
기간
Changes in muscle sympathetic nerve activity(MSNA)
기간: 6 weeks on PD and 18 weeks on PD

Muscle sympathetic nerve activity(MSNA) is measured by microneurography at

  • baseline (before starting peritoneal dialysis)
  • 6 weeks of PD
  • 18 weeks of PD(12 weeks after randomization)

MSNA increases on a glucose-based dialysis regimen and may decrease by adding non-glucose-based solution
6 weeks on PD and 18 weeks on PD
Changes in leptin levels
기간: 6 weeks on PD and 18 weeks on PD
Plasma leptin increases on a glucose-based peritoneal dialysis regimen and may decrease by adding non-glucose-based solution to the dialysis regimen
6 weeks on PD and 18 weeks on PD

2차 결과 측정

결과 측정
측정값 설명
기간
Changes in blood pressure as assessed from 24-hour ambulatory blood pressure monitor (ABPM)
기간: 6 weeks on PD and 18 weeks on PD
Blood pressure will be assessed with 24-hour ABPM at baseline, 6 weeks on PD and 18 weeks after starting peritoneal dilaysis. Summary measures of each day and night period include average systolic and diastolic BP as well as % nocturnal dipping. These summary measures can predict cardiovascular events more accurately than casual BP measures
6 weeks on PD and 18 weeks on PD
Changes in extracellular volume assessed by bioelectrical impedance (BIA)
기간: 6 weeks on PD and 18 weeks on PD
Bioelectrical impedance directly measures extracellular fluid volume and total body water. The test is based on the ability to detect differences in the conductive properties of a cell by measuring its resistance (impedance) to electrical current. The technique is reliable for tracking sequential changes in extracellular fluid volume.
6 weeks on PD and 18 weeks on PD
Changes in heart rate variability
기간: 6 weeks on PD and 18 weeks on PD
During the microneurography testing, EKG is recorded. Heart rate and heart rate variability(HRV) will be analyzed from EKG data at baseline, 6 weeks and 18 weeks after starting dialysis.
6 weeks on PD and 18 weeks on PD
Changes in central intravascular volume assessed by cardiac ultrasound
기간: 6 weeks on PD and 18 weeks on PD
Central intravascular volume will be assessed by measuring inferior vena cava (IVC) diameter during cardiac ultrasound at baseline, 6 weeks and 18 weeks on dialysis treatment
6 weeks on PD and 18 weeks on PD
Changes in plasma catecholamines levels
기간: 6 weeks on PD and 18 weeks on PD
*Plasma catecholamines (epinephrine and norepinephrine) increase on a glucose-based peritoneal dialysis regimen and may decrease by adding non-glucose-based solution to the dialysis regimen
6 weeks on PD and 18 weeks on PD
Changes in BNP (Brain Natriuretic Peptide)levels
기간: 6 weeks on PD and 18 weeks on PD
*Brain Natriuretic Peptide (BNP)increases on a glucose-based peritoneal dialysis regimen and may decrease by adding non-glucose-based solution to the dialysis regimen
6 weeks on PD and 18 weeks on PD
Changes in plasma insulin levels
기간: 6 weeks on PD and 18 weeks on PD
*Plasma insulin increases on a glucose-based peritoneal dialysis regimen and may decrease by adding non-glucose-based solution to the dialysis regimen
6 weeks on PD and 18 weeks on PD

공동 작업자 및 조사자

여기에서 이 연구와 관련된 사람과 조직을 찾을 수 있습니다.

스폰서

Ottawa Hospital Research Institute

협력자

Heart and Stroke Foundation of Ontario

수사관

  • 수석 연구원: Marcel Ruzicka, MD, PHD, Ottawa Hospital Research Institute

연구 기록 날짜

이 날짜는 ClinicalTrials.gov에 대한 연구 기록 및 요약 결과 제출의 진행 상황을 추적합니다. 연구 기록 및 보고된 결과는 공개 웹사이트에 게시되기 전에 특정 품질 관리 기준을 충족하는지 확인하기 위해 국립 의학 도서관(NLM)에서 검토합니다.

연구 주요 날짜

연구 시작 (실제)

2007년 7월 1일

기본 완료 (실제)

2018년 12월 1일

연구 완료 (실제)

2018년 12월 1일

연구 등록 날짜

최초 제출

2010년 10월 13일

QC 기준을 충족하는 최초 제출

2010년 10월 22일

처음 게시됨 (추정)

2010년 10월 26일

연구 기록 업데이트

마지막 업데이트 게시됨 (실제)

2021년 3월 15일

QC 기준을 충족하는 마지막 업데이트 제출

2021년 3월 11일

마지막으로 확인됨

2021년 3월 1일

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추가 관련 MeSH 약관

기타 연구 ID 번호

  • NA6951

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