scholarly journals Vitamin K Dependent Proteins in Kidney Disease

2019 ◽  
Vol 20 (7) ◽  
pp. 1571 ◽  
Author(s):  
Ciprian Silaghi ◽  
Tamás Ilyés ◽  
Vladimir Filip ◽  
Marius Farcaș ◽  
Adriana van Ballegooijen ◽  
...  

Patients with chronic kidney disease (CKD) have an increased risk of developing vascular calcifications, as well as bone dynamics impairment, leading to a poor quality of life and increased mortality. Certain vitamin K dependent proteins (VKDPs) act mainly as calcification inhibitors, but their involvement in the onset and progression of CKD are not completely elucidated. This review is an update of the current state of knowledge about the relationship between CKD and four extrahepatic VKDPs: matrix Gla protein, osteocalcin, growth-arrest specific protein 6 and Gla-rich protein. Based on published literature in the last ten years, the purpose of this review is to address fundamental aspects about the link between CKD and circulating VKDPs levels as well as to raise new topics about how the interplay between molecular weight and charge could influence the modifications of circulating VKDPs at the glomerular level, or whether distinct renal etiologies have effect on VKDPs. This review is the output of a systematic literature search and may open future research avenues in this niche domain.

Children ◽  
2020 ◽  
Vol 7 (9) ◽  
pp. 115
Author(s):  
Tiffany H. Taft ◽  
Bethany Doerfler ◽  
Emily Edlynn ◽  
Linda Nguyen

Gastroparesis (GP) is a chronic, gastric dysmotility disorder with significant morbidity and mortality. The hallmark of GP is the delayed emptying of the contents of the stomach in the absence of any mechanical obstruction. Patients most commonly report chronic symptoms of nausea, vomiting, feeling full quickly when eating, bloating, and abdominal pain. Treatments are limited with relatively poor efficacy. As such, children with GP are at significant risk for the development of psychological co-morbidities. In this paper, we provide a topical review of the scientific literature on the psychological, social, and emotional impacts of gastroparesis in pediatric patients. We aim to document the current state of research, identify gaps in our knowledge with appropriate recommendations for future research directions, and highlight the unique challenges pediatric patients with GP and their families may face as they manage this disease. Based on the current review, research into the psychosocial impacts in children with GP is essentially non-existent. However, when considering research in children with other chronic digestive diseases, children with GP are likely to face multiple psychosocial challenges, including increased risk for anxiety and depression, stigma, and reduced quality of life. These significant gaps in the current understanding of effects of GP across domains of childhood functioning allow for ample opportunities for future studies to address psychosocial outcomes.


PLoS ONE ◽  
2021 ◽  
Vol 16 (2) ◽  
pp. e0247623
Author(s):  
Lu Dai ◽  
Longkai Li ◽  
Helen Erlandsson ◽  
Armand M. G. Jaminon ◽  
Abdul Rashid Qureshi ◽  
...  

Patients with chronic kidney disease (CKD) suffer from vitamin K deficiency and are at high risk of vascular calcification (VC) and premature death. We investigated the association of functional vitamin K deficiency with all-cause mortality and whether this association is modified by the presence of VC in CKD stage 5 (CKD G5). Plasma dephosphorylated-uncarboxylated matrix Gla-protein (dp-ucMGP), a circulating marker of functional vitamin K deficiency, and other laboratory and clinical data were determined in 493 CKD G5 patients. VC was assessed in subgroups by Agatston scoring of coronary artery calcium (CAC) and aortic valve calcium (AVC). Backward stepwise regression did not identify dp-ucMGP as an independent determinant of VC. During a median follow-up of 42 months, 93 patients died. Each one standard deviation increment in dp-ucMGP was associated with increased risk of all-cause mortality (sub-hazard ratio (sHR) 1.17; 95% confidence interval, 1.01–1.37) adjusted for age, sex, cardiovascular disease, diabetes, body mass index, inflammation, and dialysis treatment. The association remained significant when further adjusted for CAC and AVC in sub-analyses (sHR 1.22, 1.01–1.48 and 1.27, 1.01–1.60, respectively). In conclusion, functional vitamin K deficiency associates with increased mortality risk that is independent of the presence of VC in patients with CKD G5.


2021 ◽  
Vol 80 (5) ◽  
pp. 598-604
Author(s):  
Cindy G Boer ◽  
Ingrid Szilagyi ◽  
N Long Nguyen ◽  
Tuhina Neogi ◽  
Ingrid Meulenbelt ◽  
...  

ObjectivesVitamin K is hypothesised to play a role in osteoarthritis (OA) pathogenesis through effects on vitamin K-dependent bone and cartilage proteins, and therefore may represent a modifiable risk factor. A genetic variant in a vitamin K-dependent protein that is an essential inhibitor for cartilage calcification, matrix Gla protein (MGP), was associated with an increased risk for OA. Vitamin K antagonist anticoagulants (VKAs), such as warfarin and acenocoumarol, act as anticoagulants through inhibition of vitamin K-dependent blood coagulation proteins. VKAs likely also affect the functioning of other vitamin K-dependent proteins such as MGP.MethodsWe investigated the effect of acenocoumarol usage on progression and incidence of radiographic OA in 3494 participants of the Rotterdam Study cohort. We also examined the effect of MGP and VKORC1 single nucleotide variants on this association.ResultsAcenocoumarol usage was associated with an increased risk of OA incidence and progression (OR=2.50, 95% CI=1.94–3.20), both for knee (OR=2.34, 95% CI=1.67–3.22) and hip OA (OR=2.74, 95% CI=1.82–4.11). Among acenocoumarol users, carriers of the high VKORC1(BB) expression haplotype together with the MGP OA risk allele (rs1800801-T) had an increased risk of OA incidence and progression (OR=4.18, 95% CI=2.69–6.50), while this relationship was not present in non-users of that group (OR=1.01, 95% CI=0.78–1.33).ConclusionsThese findings support the importance of vitamin K and vitamin K-dependent proteins, as MGP, in the pathogenesis of OA. Additionally, these results may have direct implications for the clinical prevention of OA, supporting the consideration of direct oral anticoagulants in favour of VKAs.


2017 ◽  
Vol 36 (5) ◽  
pp. 289-293
Author(s):  
Bobbi S. Greiner ◽  
Gail A. Poskey

AbstractCompassion fatigue is a concept used to describe how various stressors affect individuals who work in health care and other caregiving professions. The results of compassion fatigue may include decreased work productivity, poor quality of care, safety concerns, job dissatisfaction, and job turnover. The NICU professionals are at an increased risk for experiencing compassion fatigue because of the nature of working with critically ill infants, their families, and the additional stress of the workplace. The purpose of this article is for the NICU professional to understand compassion fatigue, identify the risk factors, recognize the signs and symptoms, and offer strategies to implement within the NICU environment.


2020 ◽  
Vol 49 (4) ◽  
pp. 419-425
Author(s):  
Olga Hilda Orasan ◽  
Flaviu Muresan ◽  
Augustin Mot ◽  
Adela Sitar Taut ◽  
Iulia Minciuna ◽  
...  

Background: Pruritus and insomnia are common disorders in hemodialysis (HD) patients, with a major clinical impact as they are associated with poor quality of life and increased mortality. Their coexistence and impact on survival in HD patients have rarely been investigated. Our aim is to investigate the survival of HD patients presenting either none, one, or both disorders and to compare certain features between these groups. Methods: After the inclusion/exclusion criteria, 170 patients treated by HD or online hemodiafiltration were assigned in 4 study groups depending on the presence of either, neither, or both pruritus and insomnia. We analyzed the survival difference between groups after 20 months, and we searched if there were significant differences in terms of clinical and laboratory features. Results: Survival at 20 months was lower in patients with both pruritus and insomnia. Patients with pruritus alone had a lower Kt/V than those with no complaints or insomnia alone. Those with no complaints had lower C-reactive protein and higher albumin levels than patients with insomnia alone or both conditions. Conclusion: Pruritus and insomnia should be actively investigated and correlated with some clinical and laboratory features as they have a significant impact on survival in HD patients.


2021 ◽  
Vol 64 (3) ◽  
pp. 62-67
Author(s):  
Ana Popescu ◽  
◽  
Gabriela Soric ◽  
Victoria Federiuc ◽  
Vitalie Ojovanu ◽  
...  

Background: Aging process involves an increased risk for the development of vulnerability, because senescence is a process characterized by a multitude of changes that influence the living conditions and health of the individuals. In geriatrics, the term “vulnerability” implies a multidimensional aspect, among which, multimorbidity, functional incapacity, socio-economic and cognitive problems in the elderly. The main objective of the article is to systematize data from the literature through the analysis of the concept and prevalence of vulnerability, assessed by the score Vulnerable Elders Survey-13 (VES-13) in the elderly. For this purpose, publications from the database GoogleSearch, PubMed, Hinari, etc. were analyzed. The information was systematized, highlighting the main aspects of the contemporary vision of the last 5 years.A series of studies (USA, Brazil, etc.) revealed a high prevalence of vulnerability in the elderly according to the VES-13 score, it was estimated in respondents aged > 65 years, between 40-50% of cases were vulnerable people, with a score ≥ 3 p. The vulnerability of the elderly results from different conditions, correlated with each other, especially biological, social and genetic factors. There was a functional decline between 13 and 24% of cases, especially in the elderly over 75 years, and an association with health problems, mobility and low autonomy in over 50% of cases, with a poor quality of life and increased risk of institutionalization. Conclusions: Vulnerability assessment measures are important for identifying older people at high risk of deteriorating health, which is an important target for interdisciplinary intervention.


2021 ◽  
pp. 729-736
Author(s):  
Hoda Badr ◽  
Courtney Bitz

Cancer survivors experience significant physical, psychological, and social challenges that contribute to poor quality of life. Intimate partners provide critical care and support across the cancer continuum, but they report psychological distress, lack basic healthcare knowledge and skills, and experience increased tension and conflict in their relationships with survivors. Couple-based interventions hold great promise in cancer because they can simultaneously address survivor, partner, and relationship concerns. However, they are seldom implemented in healthcare settings as part of routine care. This chapter will therefore integrate what research has taught us about couples and cancer and what we have learned from couples in the clinical setting. We begin with an overview of challenges faced by couples across the cancer continuum, including biopsychosocial stressors. Next, we describe different perspectives that have shaped descriptive and intervention research on couples’ psychosocial adaptation to cancer. We conclude with clinical implications and directions for future research.


2019 ◽  
pp. bmjspcare-2019-001880 ◽  
Author(s):  
Maiken Bang Hansen ◽  
Lone Ross ◽  
Morten Aagaard Petersen ◽  
Mogens Groenvold

BackgroundPatients referred to specialised palliative care are troubled by symptoms/problems, but more knowledge is needed on the level and frequency of symptoms/problems. It is also uncertain how gender, age and cancer diagnosis, respectively, are associated with symptoms/problems.AimsTo describe symptoms/problems in patients with cancer at the start of specialised palliative care, and to study how age, gender and cancer diagnosis were associated with symptoms/problems.DesignA register-based study including data from the Danish Palliative Care Database.Setting/ParticipantsPatients with cancer who reported their symptoms/problems using the European Organisation for Research and Treatment of Cancer Quality of Life Questionaire-Core-15-Palliative Care (EORTC QLQ-C15-PAL) at the start of specialised palliative care were included. Ordinal logistic regression was performed to test if gender, age and cancer diagnosis were associated with each symptom/problem.Results31 771 patients with cancer were included in the study. The most prevalent and severe symptoms/problems were pain, appetite loss, fatigue, poor physical function and poor quality of life. Gender, age and cancer diagnosis were significantly associated with most symptoms/problems. The strongest associations between symptoms/problems and gender and age, respectively, were increased risk of nausea in women, as well as increased risk of poor physical function and reduced risk of sleeplessness and pain with increasing age. Patients with brain/central nervous system cancer had the lowest risk of symptoms but the highest risk of poor physical function.ConclusionAt the start of specialised palliative care, patients with cancer experience severe levels of symptoms, poor physical function and poor quality of life. Age, gender and diagnosis were significantly associated with most symptoms/problems, but the strength and direction of the associations differed across symptoms/problems.


2015 ◽  
Vol 113 (04) ◽  
pp. 881-890 ◽  
Author(s):  
Nic J. G. M. Veeger ◽  
Nakisa Khorsand ◽  
Hanneke C. Kluin-Nelemans ◽  
Hilde A. M. Kooistra ◽  
Karina Meijer ◽  
...  

SummaryVitamin K antagonists (VKA) are widely used in atrial fibrillation and venous thromboembolism (VTE). Their efficacy and safety depend on individual time in the therapeutic range (iTTR). Due to the variable dose-response relationship within patients, also patients with initially stable VKA treatment may develop extreme overanticoagulation (EO). EO is associated with an immediate bleeding risk, but it is unknown whether VKA treatment will subsequently restabilise. We evaluated long-term quality of VKA treatment and clinical outcome after EO. EO was defined as international normalized ratio (INR) ≥ 8.0 and/or unscheduled vitamin K supplementation. We included a consecutive cohort of initially stable atrial fibrillation and venous thromboembolism patients. In EO patients, the 90 days pre- and post-period were compared. In addition, patients with EO were compared with patients without EO using a matched 1:2 cohort. Of 14,777 initially stable patients, 800 patients developed EO. The pre-period was characterised by frequent overanticoagulation, and half of EO patients had an inadequate iTTR (< 65 %). After EO, underanticoagulation became more prevalent. Although the mean time between INR-measurements decreased from 18.6 to 13.2 days, after EO inadequate iTTR became more frequent (62 %), p-value < 0.001. A 2.3 times (95 % confidence interval [CI] 2.0–2.5) higher risk for iTTR< 65 % after EO, was accompanied by increased risk of bleeding (hazard ratio [HR] 2.1;CI 1.4–3.2), VKA-related death 17.0 (HR 17.0;CI 2.1–138) and thrombosis (HR 5.7;CI 1.5–22.2), compared to the 1600 controls. In conclusion, patients continuing VKA after EO have long-lasting inferior quality of VKA treatment despite intensified INR-monitoring, and an increased risk of bleeding, thrombosis and VKA-related death.Note: There have been no previous presentations, reports or publications of the complete data that appear in the article. Parts of the data in this article have been presented as a poster at the American Society of Hematology (ASH) congress 2013, New Orleans, United States.


Nutrients ◽  
2019 ◽  
Vol 11 (1) ◽  
pp. 152 ◽  
Author(s):  
Yi-Chou Hou ◽  
Chien-Lin Lu ◽  
Cai-Mei Zheng ◽  
Ruei-Ming Chen ◽  
Yuh-Feng Lin ◽  
...  

Vascular calcification is a critical complication in patients with chronic kidney disease (CKD) because it is predictive of cardiovascular events and mortality. In addition to the traditional mechanisms associated with endothelial dysfunction and the osteoblastic transformation of vascular smooth muscle cells (VSMCs), the regulation of calcification inhibitors, such as calciprotein particles (CPPs) and matrix vesicles plays a vital role in uremic vascular calcification in CKD patients because of the high prevalence of vitamin K deficiency. Vitamin K governs the gamma-carboxylation of matrix Gla protein (MGP) for inhibiting vascular calcification, and the vitamin D binding protein receptor is related to vitamin K gene expression. For patients with chronic kidney disease, adequate use of vitamin D supplements may play a role in vascular calcification through modulation of the calciprotein particles and matrix vesicles (MVs).


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