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  1. Article ; Online: Reply: MobiusHD Device: Knowing the "New Kid on the Block" of Neuromodulation.

    van Kleef, Monique E A M / Spiering, Wilko

    JACC. Cardiovascular interventions

    2022  Volume 15, Issue 11, Page(s) 1183–1184

    MeSH term(s) Humans ; Treatment Outcome
    Language English
    Publishing date 2022-05-11
    Publishing country United States
    Document type Letter ; Comment
    ZDB-ID 2452157-7
    ISSN 1876-7605 ; 1936-8798
    ISSN (online) 1876-7605
    ISSN 1936-8798
    DOI 10.1016/j.jcin.2022.04.031
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Baroreflex Amplification and Carotid Body Modulation for the Treatment of Resistant Hypertension.

    Groenland, Eline H / Spiering, Wilko

    Current hypertension reports

    2020  Volume 22, Issue 4, Page(s) 27

    Abstract: Purpose of review: Patients with true resistant hypertension (RH) are characterized by having high sympathetic activity and therefore potentially benefit from treatments such as baroreflex amplification (baroreflex activation therapy (BAT) or ... ...

    Abstract Purpose of review: Patients with true resistant hypertension (RH) are characterized by having high sympathetic activity and therefore potentially benefit from treatments such as baroreflex amplification (baroreflex activation therapy (BAT) or endovascular baroreflex amplification therapy (EVBA)) or carotid body (CB) modulation. This review aims at providing an up-to-date overview of the available evidence regarding these two therapies.
    Recent findings: In recent years, increasing evidence has confirmed the potential of baroreflex amplification, either electrically (Barostim neo) or mechanically (MobiusHD), to improve blood pressure control on short- and long-term with only few side effects, in patients with RH. Two studies regarding unilateral CB resection did not show a significant change in blood pressure. Only limited studies regarding CB modulation showed promising results for transvenous CB ablation, but not for unilateral CB resection. Despite promising results from mostly uncontrolled studies, more evidence regarding the safety and efficacy from ongoing large randomized sham-controlled trials is needed before baroreflex amplification and CB modulation can be implemented in routine clinical practice.
    MeSH term(s) Baroreflex/physiology ; Blood Pressure/physiology ; Carotid Body/physiopathology ; Electric Stimulation Therapy ; Humans ; Hypertension/drug therapy ; Hypertension/physiopathology ; Hypertension/therapy ; Pressoreceptors ; Prosthesis Implantation
    Language English
    Publishing date 2020-03-12
    Publishing country United States
    Document type Journal Article ; Review
    ZDB-ID 2057367-4
    ISSN 1534-3111 ; 1522-6417
    ISSN (online) 1534-3111
    ISSN 1522-6417
    DOI 10.1007/s11906-020-1024-x
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Letter by Spiering et al Regarding Article, "Effect of Denosumab or Alendronic Acid on the Progression of Aortic Stenosis: A Double-Blind Randomized Controlled Trial".

    Spiering, Wilko / Mali, Willem P / de Jong, Pim A

    Circulation

    2021  Volume 144, Issue 22, Page(s) e334

    MeSH term(s) Alendronate ; Aortic Valve Stenosis/diagnostic imaging ; Aortic Valve Stenosis/drug therapy ; Denosumab/adverse effects ; Double-Blind Method ; Humans
    Chemical Substances Denosumab (4EQZ6YO2HI) ; Alendronate (X1J18R4W8P)
    Language English
    Publishing date 2021-11-29
    Publishing country United States
    Document type Letter ; Comment
    ZDB-ID 80099-5
    ISSN 1524-4539 ; 0009-7322 ; 0069-4193 ; 0065-8499
    ISSN (online) 1524-4539
    ISSN 0009-7322 ; 0069-4193 ; 0065-8499
    DOI 10.1161/CIRCULATIONAHA.121.055622
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Plasma lipids in Pseudoxanthoma Elasticum (PXE) patients: A comparative study with population-based reference values and Non-PXE controls.

    Harmsen, Iris M / Visseren, Frank L J / Kok, Madeleine / de Jong, Pim A / Spiering, Wilko

    Atherosclerosis plus

    2023  Volume 55, Page(s) 5–11

    Abstract: Background and aims: - Pseudoxanthoma elasticum (PXE) is a rare genetic disease caused by pathogenic mutations in the ABCC6 gene, resulting in low values of inorganic pyrophosphate (PPi). While low PPi is thought to contribute to arterial calcification, ...

    Abstract Background and aims: - Pseudoxanthoma elasticum (PXE) is a rare genetic disease caused by pathogenic mutations in the ABCC6 gene, resulting in low values of inorganic pyrophosphate (PPi). While low PPi is thought to contribute to arterial calcification, it remains unclear whether this fully explains premature calcification in PXE. It has been hypothesized that the ABCC6 gene could be related to dyslipidemia, which could contribute to vascular calcification seen in PXE. The aim of this study is to evaluate the relation between PXE and plasma lipid concentrations in a large cohort of PXE patients compared with reference values for the general population and compared with non-PXE controls.
    Methods: - The plasma concentrations of total cholesterol, HDL-cholesterol, tiglycerides, and LDL-cholesterol of 312 PXE patients were compared to age- and sex-matched modeled data of the general Dutch population. Differences in median lipid levels were compared with Mann-Whitney-U test. Secondly, plasma lipid concentrations of 44 PXE patients were compared to 44 not-genetically related relatives (spouses or friends), with linear models adjusted for age, sex and BMI.
    Results: - Total cholesterol in PXE patients was 5.6 [IQR 4.6-6.4] mmol/L versus 5.3 [IQR 4.7-6.0] mmol/L (p < 0.01) in the general population; triglycerides were 1.1 [IQR 0.9-1.7] mmol/L versus 1.0 [0.7-1.4] mmol/L (p < 0.01); HDL-c was 1.4 [IQR 1.2-1.7] mmol/L versus 1.5 [IQR 1.2-1.8] mmol/L (p = 0.03) and LDL-c was 3.3 [IQR 2.7-4.1] mmol/L versus 3.2 [IQR 2.7-3.8] mmol/L (p = 0.01). In the patient control analysis with 44 pairs and age, sex and BMI adjusted, comparison with the non-PXE controls only triglycerides were significantly different (mean difference: 0.38 (0.13-0.63)).
    Conclusion: -The lipid profiles of PXE patients are marginally different from the general population or compared to a matched control group, but the differences are unlikely to be clinically relevant
    Language English
    Publishing date 2023-12-17
    Publishing country Netherlands
    Document type Journal Article
    ISSN 2667-0895
    ISSN (online) 2667-0895
    DOI 10.1016/j.athplu.2023.12.003
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  5. Article ; Online: The effect of endovascular baroreflex amplification on central sympathetic nerve circuits and cerebral blood flow in patients with resistant hypertension: A functional MRI study.

    Groenland, Eline H / van Kleef, Monique E A M / Hendrikse, Jeroen / Spiering, Wilko / Siero, Jeroen C W

    Frontiers in neuroimaging

    2022  Volume 1, Page(s) 924724

    Abstract: Background: Endovascular baroreflex amplification (EVBA) by implantation of the MobiusHD is hypothesized to lower blood pressure by decreasing sympathetic activity through the mechanism of the baroreflex. In the present exploratory study we investigated ...

    Abstract Background: Endovascular baroreflex amplification (EVBA) by implantation of the MobiusHD is hypothesized to lower blood pressure by decreasing sympathetic activity through the mechanism of the baroreflex. In the present exploratory study we investigated the impact of MobiusHD implantation on central sympathetic nerve circuits and cerebral blood flow (CBF) in patients with resistant hypertension.
    Materials and methods: In thirteen patients, we performed blood oxygenation level-dependent functional magnetic resonance imaging (BOLD fMRI) at rest and during Valsalva maneuvers, before and 3 months after EVBA. Data were analyzed using a whole-brain approach and a brainstem-specific analysis. CBF was assessed using arterial spin labeling MRI.
    Results: Resting-state fMRI analysis did not reveal significant differences in functional connectivity at 3 months after EVBA. For the Valsalva maneuver data, the whole-brain fMRI analysis revealed significantly increased activation in the posterior and anterior cingulate, the insular cortex, the precuneus, the left thalamus and the anterior cerebellum. The brainstem-specific fMRI analysis showed a significant increase in BOLD activity in the right midbrain 3 months after EVBA. Mean gray matter CBF (partial volume corrected) decreased significantly from 48.9 (9.9) ml/100 gr/min at baseline to 43.4 (13.0) ml/100 gr/min (
    Conclusions: This first fMRI pilot study in patients with resistant hypertension treated with EVBA showed a significant increase in BOLD activity during the Valsalva maneuver in brain regions related to sympathetic activity. No notable signal intensity changes were observed in brain areas involved in the baroreflex circuit. Future randomized controlled studies are needed to investigate whether the observed changes are directly caused by EVBA.
    Clinical trial registration: www.clinicaltrials.gov, identifier: NCT02827032.
    Language English
    Publishing date 2022-07-25
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 3123824-5
    ISSN 2813-1193 ; 2813-1193
    ISSN (online) 2813-1193
    ISSN 2813-1193
    DOI 10.3389/fnimg.2022.924724
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Number of measurement days needed for obtaining a reliable estimate of home blood pressure and hypertension status.

    Groenland, Eline H / Bots, Michiel L / Visseren, Frank L J / McManus, Richard J / Spiering, Wilko

    Blood pressure

    2022  Volume 31, Issue 1, Page(s) 100–108

    Abstract: Purpose: Out-of-office blood pressure (BP) measurements are essential for the diagnosis and monitoring of hypertension. Current guidelines vary in their recommendations on the protocol for home blood pressure monitoring (HBPM). We aimed to assess the ... ...

    Abstract Purpose: Out-of-office blood pressure (BP) measurements are essential for the diagnosis and monitoring of hypertension. Current guidelines vary in their recommendations on the protocol for home blood pressure monitoring (HBPM). We aimed to assess the number of blood pressure (BP) measurement days needed for a reliable estimation of true home BP (the expected BP level over time) and hypertension status, using the European guideline-based 7-day HBPM protocol as a reference.
    Materials and methods: Data from 567 adults who performed a 7-day HBPM were analysed. Blood pressure was measured twice daily (morning and evening readings) using the Microlife Average Mode (MAM), which takes a weighted average of 3 consecutive BP readings. The variability of average BP for an increasing number of measurements was assessed using a linear mixed model including a random intercept per individual and correlated residuals. The reliability of home hypertension status was assessed by the κ statistic.
    Results: Mean home BP of the population was 143 ± 16/84 ± 10 mm Hg. On average, the first BP measurements gave the highest values which then decreased over time. Systolic BP in the morning was systematically lower than systolic BP in the evening (142 ± 17mm Hg versus 144 ± 17 mm Hg,
    Conclusion: Twice-daily MAM BP measurements for 3 consecutive days provide a reliable estimate of home BP. At least 4.5 consecutive days of HBPM are required for a reliable diagnosis of home hypertension.
    MeSH term(s) Adult ; Blood Pressure ; Blood Pressure Determination ; Blood Pressure Monitoring, Ambulatory/methods ; Humans ; Hypertension/diagnosis ; Reproducibility of Results
    Language English
    Publishing date 2022-05-14
    Publishing country England
    Document type Journal Article
    ZDB-ID 1170048-8
    ISSN 1651-1999 ; 1651-2480 ; 0803-7051 ; 0803-8023
    ISSN (online) 1651-1999 ; 1651-2480
    ISSN 0803-7051 ; 0803-8023
    DOI 10.1080/08037051.2022.2071674
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  7. Article ; Online: Peripheral Interventions in Patients with Pseudoxanthoma Elasticum (PXE).

    Verwer, Maarten C / Hazenberg, Constantijn E V B / Spiering, Wilko / de Borst, Gert J

    European journal of vascular and endovascular surgery : the official journal of the European Society for Vascular Surgery

    2022  Volume 65, Issue 1, Page(s) 142–148

    Abstract: Objective: Pseudoxanthoma elasticum (PXE) is an autosomal recessive metabolic disorder that may be associated with a high prevalence of peripheral artery disease (PAD) and related symptoms. However, the evidence supporting this association is weak, as ... ...

    Abstract Objective: Pseudoxanthoma elasticum (PXE) is an autosomal recessive metabolic disorder that may be associated with a high prevalence of peripheral artery disease (PAD) and related symptoms. However, the evidence supporting this association is weak, as only small cohort studies are available. Furthermore, limited data are available on the outcome of lower limb peripheral arterial interventions (PAI) in patients with PXE. It was the aim of this study to clarify the prevalence of PAD, and the occurrence and outcome of PAI in patients with PXE.
    Methods: This was a retrospective review of prospectively collected data from the Dutch Expertise Centre for PXE database. Clinical data of consecutive patients with a definitive diagnosis of PXE were examined. The primary endpoint was the prevalence of PAD (defined as an ankle brachial index of < 0.9). The secondary endpoint was to report an overview of PAI and target lesion revascularisations.
    Results: In 285 PXE patients (median age 58 years), 50.9% of patients (n = 145) met the criteria for PAD. Seventeen patients underwent a PAI, mostly for intermittent claudication, at a median age of 51 years. The incidence of PAI was 2.25 per 1 000 patient years in patients with PAD and PXE. A total of 58 interventions was recorded, of which 35 were target lesion revascularisations in nine patients. Twenty one revascularisations were performed within a year following the primary intervention, in 16 cases due to an acute occlusion.
    Conclusion: Within a well phenotyped and large PXE cohort, the diagnosis of PAD was prevalent in one in two patients. The observed rate of peripheral interventions was low, while the re-intervention rate was unfavourable after endovascular or bypass surgical procedures, with over half of these re-interventions indicated within a year.
    MeSH term(s) Humans ; Middle Aged ; Pseudoxanthoma Elasticum/diagnosis ; Pseudoxanthoma Elasticum/epidemiology ; Pseudoxanthoma Elasticum/therapy ; Peripheral Arterial Disease/diagnosis ; Peripheral Arterial Disease/epidemiology ; Peripheral Arterial Disease/therapy ; Retrospective Studies ; Prevalence ; Ankle Brachial Index
    Language English
    Publishing date 2022-08-14
    Publishing country England
    Document type Journal Article
    ZDB-ID 1225869-6
    ISSN 1532-2165 ; 1078-5884
    ISSN (online) 1532-2165
    ISSN 1078-5884
    DOI 10.1016/j.ejvs.2022.08.009
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  8. Article ; Online: Do pseudoxanthoma elasticum patients have higher prevalence of kidney stones on computed tomography compared to hospital controls?

    Harmsen, Iris M / Kok, Madeleine / Bartstra, Jonas W / de Jong, Pim A / Spiering, Wilko / Foppen, Wouter

    Clinical and experimental nephrology

    2023  Volume 28, Issue 1, Page(s) 75–79

    Abstract: Background: Pseudoxanthoma elasticum (PXE) is an autosomal recessive disease characterized by diminished inorganic plasma pyrophosphate (PPi), a strong calcification inhibitor. In addition to more typical calcification of skin, retina and arterial wall ... ...

    Abstract Background: Pseudoxanthoma elasticum (PXE) is an autosomal recessive disease characterized by diminished inorganic plasma pyrophosphate (PPi), a strong calcification inhibitor. In addition to more typical calcification of skin, retina and arterial wall a diminished plasma PPi could lead to other ectopic calcification, such as formation of kidney stones.
    Objective: To compare the prevalence of kidney stones between PXE patients and hospital controls on computed tomography (CT).
    Method: Low-dose CT images of PXE patients and controls were assessed by one radiologist, who was blinded for the diagnosis PXE. The number of kidney stones, and the size of the largest stone was recorded. Odds ratios (ORs) for having kidney stone were calculated using multivariable adjusted logistic regression.
    Results: Our study comprised 273 PXE patients and 125 controls. The mean age of PXE patients was 51.5 ± 15.9 years compared to 54.9 ± 14.2 in the control group (p = 0.04) and PXE patients more often were women (63 vs. 50%, p = 0.013). The prevalence of kidney stones on CT was similar: 6.9% in PXE patients, compared to 5.6% in controls (p = 0.6). In the multivariate analysis adjusting for age and sex, there was no significantly higher odds for PXE patients on having stones, compared to controls: OR 1.48 (95% CI 0.62-3.96).
    Conclusion: There is no significant difference in the prevalence of incidental kidney stones on CT in PXE patients versus controls.
    MeSH term(s) Humans ; Female ; Adult ; Middle Aged ; Aged ; Male ; Pseudoxanthoma Elasticum/diagnostic imaging ; Pseudoxanthoma Elasticum/epidemiology ; Prevalence ; Skin ; Tomography, X-Ray Computed/methods ; Kidney Calculi/diagnostic imaging ; Kidney Calculi/epidemiology
    Language English
    Publishing date 2023-10-14
    Publishing country Japan
    Document type Journal Article
    ZDB-ID 1338768-6
    ISSN 1437-7799 ; 1342-1751
    ISSN (online) 1437-7799
    ISSN 1342-1751
    DOI 10.1007/s10157-023-02405-2
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  9. Article ; Online: Validation of spot urine in estimating 24-h urinary sodium, potassium and sodium-to-potassium ratio during three different sodium diets in healthy adults.

    Groenland, Eline H / Vendeville, Jean-Paul A C / Bots, Michiel L / Visseren, Frank L J / Musson, Ruben E A / Spiering, Wilko

    Blood pressure

    2023  Volume 32, Issue 1, Page(s) 2170868

    Abstract: Purpose: To evaluate the validity of spot urine assay methods in estimating the 24-h urinary sodium, potassium and sodium-to-potassium ratio during three different sodium diets.: Materials and methods: Twelve healthy volunteers were asked to adhere ... ...

    Abstract Purpose: To evaluate the validity of spot urine assay methods in estimating the 24-h urinary sodium, potassium and sodium-to-potassium ratio during three different sodium diets.
    Materials and methods: Twelve healthy volunteers were asked to adhere to 3 dietary sodium targets (3.3-5.0g/day,<3.3 g/day and >5.0 g/day) for three consecutive weeks and to measure salt excretion daily in spot urine samples using a self-monitoring device. On day 7 of each week, 24-h urine was collected to compare measured with estimated 24-h salt excretion (by the Kawasaki, Tanaka and INTERSALT equations).
    Results: Correlation coefficients relating measured and estimated 24-h sodium excretion were low and not significant for Kawasaki and INTERSALT and moderate for the Tanaka equation (τ 0.56-0.64,
    Conclusion: These findings do not support estimation of individual 24-h salt excretion from spot urine by the Kawasaki, Tanaka, or INTERSALT formula. Plain language summaryAccurate monitoring of salt intake is essential to improve BP control. At present, measurement of sodium and potassium excretion in multiple non-consecutive 24-h urinary collections is considered the gold standard for measuring dietary sodium intake. However, this method is burdensome, time-consuming and error prone.Therefore, we assessed and compared the validity of three formula-based approaches to estimate 24-h urinary sodium and potassium excretion and the Na/K ratio from spot urine samples measured by a self-monitoring device under three different sodium diets using 24-h urine collections as the reference.We conclude that use of three commonly used equations that estimate 24-h urinary sodium and potassium excretion result in substantial bias, poor precision and poor accuracy and are therefore not recommended. The Na/K ratio based on multiple casual urine samples may be a useful, low-burden, low-cost alternative method to 24-h urine collection for monitoring daily salt intake.
    MeSH term(s) Humans ; Adult ; Sodium Chloride, Dietary ; Potassium/urine ; Sodium, Dietary/urine ; Sodium/urine ; Diet
    Chemical Substances Sodium Chloride, Dietary ; Potassium (RWP5GA015D) ; Sodium, Dietary ; Sodium (9NEZ333N27) ; Sodium-24
    Language English
    Publishing date 2023-02-08
    Publishing country England
    Document type Journal Article
    ZDB-ID 1170048-8
    ISSN 1651-1999 ; 1651-2480 ; 0803-7051 ; 0803-8023
    ISSN (online) 1651-1999 ; 1651-2480
    ISSN 0803-7051 ; 0803-8023
    DOI 10.1080/08037051.2023.2170868
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  10. Article ; Online: Accelerated peripheral vascular aging in pseudoxanthoma elasticum - proof of concept for arterial calcification-induced cardiovascular disease.

    Bartstra, Jonas W / de Jong, Pim A / Spiering, Wilko

    Aging

    2019  Volume 11, Issue 3, Page(s) 1062–1064

    MeSH term(s) Humans ; Pseudoxanthoma Elasticum/physiopathology ; Vascular Calcification
    Language English
    Publishing date 2019-02-08
    Publishing country United States
    Document type Journal Article
    ISSN 1945-4589
    ISSN (online) 1945-4589
    DOI 10.18632/aging.101821
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