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van der Weijden J, De Hoogt PA, Leufkens MME, Keijbeck AA, van Goor H, van den Heuvel MC, Cleutjens JPM, Moers C, Snoeijs MG, Navis GJ, van Londen M, Nolte IM, Berger SP, De Borst MH, Peutz-Kootstra CJ. The relationship of peritubular capillary density with glomerular volume and kidney function in living kidney donors. J Nephrol 2023; 36:2111-2124. [PMID: 37768545 PMCID: PMC10543576 DOI: 10.1007/s40620-023-01734-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Accepted: 07/03/2023] [Indexed: 09/29/2023]
Abstract
BACKGROUND Peritubular capillary rarefaction plays an important role in the progression of chronic kidney disease. Little is known about the relation between peritubular capillary density, glomerular volume and filtration rate in the healthy kidney. METHODS In this single-center study, we included 69 living kidney donors who donated between 2005 and 2008 and had representative renal biopsies available. In all donors, glomerular filtration rate was measured using 125I-Iothalamate before donation and at five years after donation. Before donation, the increase in glomerular filtration rate after dopamine stimulation was measured. Glomerular volume and peritubular capillary density were determined in biopsies taken at the time of transplantation. Pearson's correlation coefficient and linear regression were used to assess relations between parameters. RESULTS Mean donor age was 52 ± 11 years and mean measured glomerular filtration rate was 119 ± 22 mL/min before donation and 82 ± 15 mL/min at five years after donation. While peritubular capillary density (measured by either number of peritubular capillaries/50,000 μm2 or number of peritubular capillaries/tubule) was not associated with measured glomerular filtration rate before or after donation, number of peritubular capillaries/tubule was associated with the increase in measured glomerular filtration rate after dopamine stimulation (St.β = 0.33, p = 0.004), and correlated positively with glomerular volume (R = 0.24, p = 0.047). Glomerular volume was associated with unstimulated measured glomerular filtration rate before donation (St.β = 0.31, p = 0.01) and at five years (St.β = 0.30, p = 0.01) after donation, independent of age. CONCLUSIONS In summary, peritubular capillary density was not related to unstimulated kidney function before or after kidney donation, in contrast to glomerular volume. However, number of peritubular capillaries/tubule correlated with the increase in glomerular filtration rate after dopamine stimulation in healthy kidneys, and with glomerular volume. These findings suggest that peritubular capillary density and glomerular volume differentially affect kidney function in healthy living kidney donors.
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Affiliation(s)
- J van der Weijden
- Division of Nephrology, Department of Internal Medicine, University Medical Center Groningen, University of Groningen, Hanzeplein 1, P.O. Box AA53, 9713 GZ, Groningen, The Netherlands.
| | - P A De Hoogt
- Department of Vascular Surgery, Maastricht University Medical Center+, Maastricht, The Netherlands
| | - M M E Leufkens
- Department of Pathology, Maastricht University Medical Center+, Cardiovascular Research Institute Maastricht (CARIM), Maastricht, The Netherlands
| | - A A Keijbeck
- Department of Pathology, Maastricht University Medical Center+, Cardiovascular Research Institute Maastricht (CARIM), Maastricht, The Netherlands
| | - H van Goor
- Department of Pathology and Medical Biology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - M C van den Heuvel
- Department of Pathology and Medical Biology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - J P M Cleutjens
- Department of Pathology, Maastricht University Medical Center+, Cardiovascular Research Institute Maastricht (CARIM), Maastricht, The Netherlands
| | - C Moers
- Department of Surgery, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - M G Snoeijs
- Department of Vascular Surgery, Maastricht University Medical Center+, Maastricht, The Netherlands
| | - G J Navis
- Division of Nephrology, Department of Internal Medicine, University Medical Center Groningen, University of Groningen, Hanzeplein 1, P.O. Box AA53, 9713 GZ, Groningen, The Netherlands
| | - M van Londen
- Division of Nephrology, Department of Internal Medicine, University Medical Center Groningen, University of Groningen, Hanzeplein 1, P.O. Box AA53, 9713 GZ, Groningen, The Netherlands
| | - I M Nolte
- Department of Epidemiology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - S P Berger
- Division of Nephrology, Department of Internal Medicine, University Medical Center Groningen, University of Groningen, Hanzeplein 1, P.O. Box AA53, 9713 GZ, Groningen, The Netherlands
| | - M H De Borst
- Division of Nephrology, Department of Internal Medicine, University Medical Center Groningen, University of Groningen, Hanzeplein 1, P.O. Box AA53, 9713 GZ, Groningen, The Netherlands
| | - C J Peutz-Kootstra
- Department of Pathology, Maastricht University Medical Center+, Cardiovascular Research Institute Maastricht (CARIM), Maastricht, The Netherlands
- Department of Pathology, Gelre Ziekenhuizen, Apeldoorn, The Netherlands
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van Vliet IMY, Post A, Kremer D, Boslooper-Meulenbelt K, van der Veen Y, de Jong MFC, Pol RA, Jager-Wittenaar H, Navis GJ, Bakker SJL, Gan C, Sanders J, Verschuuren E, Damman K, Lexmond W, Blokzijl J, de Borst M, Erasmus M, Porte R, de Boer M, Pol R, Berger S, Eisenga M, Neto AG, Kremer D, van Londen M, Jong JA, Siebelink M, van Pelt L, Niesters H, Bodewes F, Hepkema B, Ranchor A, Douwes R, Jager‐Wittenaar H, Navis GJ, Bakker SJ. Muscle mass, muscle strength and mortality in kidney transplant recipients: results of the TransplantLines Biobank and Cohort Study. J Cachexia Sarcopenia Muscle 2022; 13:2932-2943. [PMID: 36891995 PMCID: PMC9745460 DOI: 10.1002/jcsm.13070] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 06/10/2022] [Accepted: 07/23/2022] [Indexed: 11/06/2022] Open
Abstract
BACKGROUND Survival of kidney transplant recipients (KTR) is low compared with the general population. Low muscle mass and muscle strength may contribute to lower survival, but practical measures of muscle status suitable for routine care have not been evaluated for their association with long-term survival and their relation with each other in a large cohort of KTR. METHODS Data of outpatient KTR ≥ 1 year post-transplantation, included in the TransplantLines Biobank and Cohort Study (ClinicalTrials.gov Identifier: NCT03272841), were used. Muscle mass was determined as appendicular skeletal muscle mass indexed for height2 (ASMI) through bio-electrical impedance analysis (BIA), and by 24-h urinary creatinine excretion rate indexed for height2 (CERI). Muscle strength was determined by hand grip strength indexed for height2 (HGSI). Secondary analyses were performed using parameters not indexed for height2. Cox proportional hazards models were used to investigate the associations between muscle mass and muscle strength and all-cause mortality, both in univariable and multivariable models with adjustment for potential confounders, including age, sex, body mass index (BMI), estimated glomerular filtration rate (eGFR) and proteinuria. RESULTS We included 741 KTR (62% male, age 55 ± 13 years, BMI 27.3 ± 4.6 kg/m2), of which 62 (8%) died during a median [interquartile range] follow-up of 3.0 [2.3-5.7] years. Compared with patients who survived, patients who died had similar ASMI (7.0 ± 1.0 vs. 7.0 ± 1.0 kg/m2; P = 0.57), lower CERI (4.2 ± 1.1 vs. 3.5 ± 0.9 mmol/24 h/m2; P < 0.001) and lower HGSI (12.6 ± 3.3 vs. 10.4 ± 2.8 kg/m2; P < 0.001). We observed no association between ASMI and all-cause mortality (HR 0.93 per SD increase; 95% confidence interval [CI] [0.72, 1.19]; P = 0.54), whereas CERI and HGSI were significantly associated with mortality, independent of potential confounders (HR 0.57 per SD increase; 95% CI [0.44, 0.81]; P = 0.002 and HR 0.47 per SD increase; 95% CI [0.33, 0.68]; P < 0.001, respectively), and associations of CERI and HGSI with mortality remained independent of each other (HR 0.68 per SD increase; 95% CI [0.47, 0.98]; P = 0.04 and HR 0.53 per SD increase; 95% CI [0.36, 0.76]; P = 0.001, respectively). Similar associations were found for unindexed parameters. CONCLUSIONS Higher muscle mass assessed by creatinine excretion rate and higher muscle strength assessed by hand grip strength are complementary in their association with lower risk of all-cause mortality in KTR. Muscle mass assessed by BIA is not associated with mortality. Routine assessment using both 24-h urine samples and hand grip strength is recommended, to potentially target interdisciplinary interventions for KTR at risk for poor survival to improve muscle status.
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Affiliation(s)
- Iris M Y van Vliet
- Department of Dietetics, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Adrian Post
- Department of Internal Medicine, Division of Nephrology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Daan Kremer
- Department of Internal Medicine, Division of Nephrology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Karin Boslooper-Meulenbelt
- Department of Internal Medicine, Division of Nephrology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Yvonne van der Veen
- Department of Dietetics, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,Department of Internal Medicine, Division of Nephrology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Margriet F C de Jong
- Department of Internal Medicine, Division of Nephrology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Robert A Pol
- Department of Surgery, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | | | - Harriët Jager-Wittenaar
- Department of Oral and Maxillofacial Surgery, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,Research Group Healthy Ageing, Health Care and Nursing, Hanze University of Applied Sciences, Groningen, The Netherlands
| | - Gerjan J Navis
- Department of Internal Medicine, Division of Nephrology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Stephan J L Bakker
- Department of Internal Medicine, Division of Nephrology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - C.T. Gan
- Groningen Transplant Center University of Groningen, University Medical Center Groningen Groningen The Netherlands
| | - J.S.F. Sanders
- Groningen Transplant Center University of Groningen, University Medical Center Groningen Groningen The Netherlands
| | - E.A.M. Verschuuren
- Groningen Transplant Center University of Groningen, University Medical Center Groningen Groningen The Netherlands
| | - K. Damman
- Groningen Transplant Center University of Groningen, University Medical Center Groningen Groningen The Netherlands
| | - W.S. Lexmond
- Groningen Transplant Center University of Groningen, University Medical Center Groningen Groningen The Netherlands
| | - J. Blokzijl
- Groningen Transplant Center University of Groningen, University Medical Center Groningen Groningen The Netherlands
| | - M.H. de Borst
- Groningen Transplant Center University of Groningen, University Medical Center Groningen Groningen The Netherlands
| | - M.E. Erasmus
- Groningen Transplant Center University of Groningen, University Medical Center Groningen Groningen The Netherlands
| | - R.J. Porte
- Groningen Transplant Center University of Groningen, University Medical Center Groningen Groningen The Netherlands
| | - M.T. de Boer
- Groningen Transplant Center University of Groningen, University Medical Center Groningen Groningen The Netherlands
| | - R.A. Pol
- Groningen Transplant Center University of Groningen, University Medical Center Groningen Groningen The Netherlands
| | - S.P. Berger
- Groningen Transplant Center University of Groningen, University Medical Center Groningen Groningen The Netherlands
| | - M.F. Eisenga
- Groningen Transplant Center University of Groningen, University Medical Center Groningen Groningen The Netherlands
| | - A.W. Gomes Neto
- Groningen Transplant Center University of Groningen, University Medical Center Groningen Groningen The Netherlands
| | - D. Kremer
- Groningen Transplant Center University of Groningen, University Medical Center Groningen Groningen The Netherlands
| | - M. van Londen
- Groningen Transplant Center University of Groningen, University Medical Center Groningen Groningen The Netherlands
| | - J.H. Annema‐de Jong
- Groningen Transplant Center University of Groningen, University Medical Center Groningen Groningen The Netherlands
| | - M.J. Siebelink
- Groningen Transplant Center University of Groningen, University Medical Center Groningen Groningen The Netherlands
| | - L.J. van Pelt
- Groningen Transplant Center University of Groningen, University Medical Center Groningen Groningen The Netherlands
| | - H.G.M. Niesters
- Groningen Transplant Center University of Groningen, University Medical Center Groningen Groningen The Netherlands
| | - F.A.J.A. Bodewes
- Groningen Transplant Center University of Groningen, University Medical Center Groningen Groningen The Netherlands
| | - B.G. Hepkema
- Groningen Transplant Center University of Groningen, University Medical Center Groningen Groningen The Netherlands
| | - A.V. Ranchor
- Groningen Transplant Center University of Groningen, University Medical Center Groningen Groningen The Netherlands
| | - R.M. Douwes
- Groningen Transplant Center University of Groningen, University Medical Center Groningen Groningen The Netherlands
| | - Harriët Jager‐Wittenaar
- Department of Oral and Maxillofacial Surgery University of Groningen, University Medical Center Groningen Groningen The Netherlands
- Research Group Healthy Ageing, Health Care and Nursing Hanze University of Applied Sciences Groningen The Netherlands
| | - Gerjan J. Navis
- Department of Internal Medicine, Division of Nephrology University of Groningen, University Medical Center Groningen Groningen The Netherlands
| | - Stephan J.L. Bakker
- Department of Internal Medicine, Division of Nephrology University of Groningen, University Medical Center Groningen Groningen The Netherlands
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Zorgdrager M, van Londen M, Westenberg LB, Nieuwenhuijs-Moeke GJ, Lange JFM, de Borst MH, Bakker SJL, Leuvenink HGD, Pol RA. Chronic pain after hand-assisted laparoscopic donor nephrectomy. Br J Surg 2019; 106:711-719. [PMID: 30919435 PMCID: PMC6593841 DOI: 10.1002/bjs.11127] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Revised: 12/18/2018] [Accepted: 01/03/2019] [Indexed: 12/20/2022]
Abstract
BACKGROUND Data on chronic pain after kidney donation are sparse. The aim of this study was to assess the incidence of chronic pain after hand-assisted laparoscopic nephrectomy. METHODS Living kidney donors who donated between 2011 and 2017 at the University Medical Centre Groningen were included. All patients underwent hand-assisted laparoscopic donor nephrectomy. Postdonation pain and movement disabilities were assessed using the Carolinas Comfort Scale (CCS) and a visual analogue scale (VAS). The prevalence, severity of pain and the need for analgesics were reported. RESULTS Some 333 living kidney donors with a mean age of 56 years were included. At a median of 19 (i.q.r. 10-33) months after donation, 82 donors (24·6 per cent) had a CCS score above 0, of which 58 (71 per cent) had a CCS score of at least 2 and 57 (70 per cent) reported movement limitations. Some 110 donors (33·0 per cent) had a VAS score of more than 0. Complaints mainly occurred during bending over (12·3 per cent) and exercising (12·4 per cent). Thirty-two donors (9·7 per cent) required analgesics during follow-up between donation and the time of measurement, and six of 82 (7 per cent) reported chronic inguinal pain. In multivariable analysis, donor age (odds ratio (OR) 0·97, 95 per cent c.i. 0·95 to 0·99; P = 0·020) and length of hospital stay (OR 1·21, 1·01 to 1·51; P = 0·041) were independently associated with chronic pain. CONCLUSION One-quarter of donors experienced chronic postdonation pain or discomfort, most of which was bothersome. Younger donors and those with a longer postoperative hospital stay had more symptoms.
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Affiliation(s)
- M Zorgdrager
- Department of Radiology, University Medical Centre Groningen, University of Groningen, Groningen, the Netherlands
| | - M van Londen
- Department of Internal Medicine, Division of Nephrology, University Medical Centre Groningen, University of Groningen, Groningen, the Netherlands
| | - L B Westenberg
- Department of Radiology, University Medical Centre Groningen, University of Groningen, Groningen, the Netherlands
| | - G J Nieuwenhuijs-Moeke
- Department of Anaesthesiology, University Medical Centre Groningen, University of Groningen, Groningen, the Netherlands
| | - J F M Lange
- Department of Surgery, Division of Transplant Surgery, University Medical Centre Groningen, University of Groningen, Groningen, the Netherlands
| | - M H de Borst
- Department of Internal Medicine, Division of Nephrology, University Medical Centre Groningen, University of Groningen, Groningen, the Netherlands
| | - S J L Bakker
- Department of Internal Medicine, Division of Nephrology, University Medical Centre Groningen, University of Groningen, Groningen, the Netherlands
| | - H G D Leuvenink
- Department of Surgery, Division of Transplant Surgery, University Medical Centre Groningen, University of Groningen, Groningen, the Netherlands
| | - R A Pol
- Department of Surgery, Division of Transplant Surgery, University Medical Centre Groningen, University of Groningen, Groningen, the Netherlands
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Mertens ECA, Deković M, van Londen M, Reitz E. The effectiveness of Rock and Water in improving students' socio-emotional adjustment and social safety: study protocol for a randomized controlled trial. BMC Psychol 2018; 6:36. [PMID: 30045770 PMCID: PMC6060546 DOI: 10.1186/s40359-018-0247-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Accepted: 06/26/2018] [Indexed: 11/10/2022] Open
Abstract
Background Students following a low education track have an increased risk for developing problem behaviors. Rock and Water is a widespread, but still poorly evaluated, intervention that aims to improve students’ socio-emotional adjustment and social safety. The aims of this study are to evaluate (1) the effectiveness of Rock and Water on socio-emotional adjustment (i.e., psychosocial wellbeing, sexual autonomy, and resilience) and social safety (i.e., perceived social security in the classroom, aggression, and bullying) and to examine (2) moderators and (3) mediators of its effects. Methods Schools are randomly assigned into four conditions: ‘Light’ (a core team of teachers is trained), ‘Standard’ (a core team of teachers and the whole school team is trained), ‘Plus’ (a core team of teachers, the whole school team is trained, and parents are involved), or ‘Control condition’ (Care As Usual). We aim to include 180 7th Grade students in each condition (N = 720) across all waves. A multi-informant (i.e., students, parents, and teachers) approach is used to assess the outcomes (socio-emotional adjustment and social safety), moderators (student, trainer, and parent characteristics) and mediators (self-control, self-reflection, self-esteem, and emotion regulation). Video-observations will be analyzed in a subsample to study the possible mediating effect of changes in deviant and prosocial communication among students on the effect on social safety. Discussion This project will provide information on the effectiveness of (different levels of school and parental involvement in) Rock and Water, which can be used by schools to decide upon the most efficient way to improve the care for the students. We will be able to shed more light on what works for whom and the working mechanisms of Rock and Water. Trial registration Dutch Trial Registration number 6554, registered on the 3rd of July 2017. The design of this study was approved by the Ethical Committee of the Faculty of Social and Behavioral Sciences of Utrecht University (FETC17–015). This study is financially supported by a grant from The Netherlands Organization for Health Research and Development, grant number 531001106. Electronic supplementary material The online version of this article (10.1186/s40359-018-0247-y) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- E C A Mertens
- Child and Adolescent Studies, Utrecht University, Heidelberglaan 1, 3584, Utrecht, CS, Netherlands.
| | - M Deković
- Child and Adolescent Studies, Utrecht University, Heidelberglaan 1, 3584, Utrecht, CS, Netherlands
| | - M van Londen
- Child and Adolescent Studies, Utrecht University, Heidelberglaan 1, 3584, Utrecht, CS, Netherlands
| | - E Reitz
- Child and Adolescent Studies, Utrecht University, Heidelberglaan 1, 3584, Utrecht, CS, Netherlands
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van Londen M, van der Weijden J, Navis G. Hyperfiltration After Donation and Living Kidney Donor Risk. Am J Transplant 2017; 17:2991. [PMID: 28649734 DOI: 10.1111/ajt.14409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- M van Londen
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, Groningen, the Netherlands
| | - J van der Weijden
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, Groningen, the Netherlands
| | - G Navis
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, Groningen, the Netherlands
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